pic16f15376 curiosity nano hardware user guide · 2019-11-21 · pic16f15376 curiosity nano...

PIC16F15376 Curiosity Nano PIC16F15376 Curiosity Nano Hardware User Guide

Preface

The PIC16F15376 Curiosity Nano Evaluation Kit is a hardware platform to evaluate the PIC16F15376microcontroller.

Supported by Microchip MPLAB® X Integrated Development Environment (IDE), the kit provides easyaccess to the features of the PIC16F15376 to explore how to integrate the device into a custom design.

The Curiosity Nano series of evaluation kits include an on-board debugger. No external tools arenecessary to program and debug the PIC16F15376.

© 2019 Microchip Technology Inc. User Guide 50002900A-page 1

Table of Contents

Preface............................................................................................................................ 1

1. Introduction................................................................................................................41.1. Features....................................................................................................................................... 41.2. Kit Overview................................................................................................................................. 4

2. Getting Started.......................................................................................................... 52.1. Curiosity Nano Quick Start...........................................................................................................52.2. Design Documentation and Relevant Links................................................................................. 5

3. Curiosity Nano........................................................................................................... 63.1. On-board Debugger..................................................................................................................... 6

3.1.1. Virtual COM Port............................................................................................................63.1.1.1. Overview..................................................................................................... 63.1.1.2. Limitations................................................................................................... 73.1.1.3. Signaling......................................................................................................73.1.1.4. Advanced Use.............................................................................................7

3.1.2. Mass Storage Disk.........................................................................................................83.1.2.1. Mass Storage Device.................................................................................. 83.1.2.2. Configuration Words....................................................................................9

3.2. Curiosity Nano Standard Pinout...................................................................................................93.3. Power Supply............................................................................................................................. 10

3.3.1. Target Regulator.......................................................................................................... 103.3.2. External Supply............................................................................................................113.3.3. VBUS Output Pin......................................................................................................... 11

3.4. Target Current Measurement..................................................................................................... 123.5. Disconnecting the On-Board Debugger..................................................................................... 13

4. Hardware User Guide..............................................................................................154.1. Connectors.................................................................................................................................15

4.1.1. PIC16F15376 Curiosity Nano Pinout...........................................................................154.1.2. Using Pin Headers.......................................................................................................15

4.2. Peripherals................................................................................................................................. 164.2.1. LED..............................................................................................................................164.2.2. Mechanical Switch.......................................................................................................164.2.3. Crystal..........................................................................................................................164.2.4. On-Board Debugger Implementation...........................................................................17

4.2.4.1. On-Board Debugger Connections............................................................. 17

5. Hardware Revision History and Known Issues........................................................185.1. Identifying Product ID and Revision........................................................................................... 185.2. Revision 2...................................................................................................................................185.3. Revision 1...................................................................................................................................18

6. Document Revision History..................................................................................... 20

PIC16F15376 Curiosity Nano


7. Appendix..................................................................................................................217.1. Schematic...................................................................................................................................217.2. Assembly Drawing......................................................................................................................237.3. Curiosity Nano Base for Click boards™...................................................................................... 247.4. Connecting External Debuggers................................................................................................ 25

The Microchip Website..................................................................................................27

Product Change Notification Service.............................................................................27

Customer Support......................................................................................................... 27

Microchip Devices Code Protection Feature................................................................. 27

Legal Notice...................................................................................................................28

Trademarks................................................................................................................... 28

Quality Management System........................................................................................ 29

Worldwide Sales and Service........................................................................................30



1. Introduction

1.1 Features• PIC16F15376-I/MV Microcontroller• One Yellow User LED• One Mechanical User Switch• Footprint for 32.768 kHz Crystal• On-Board Debugger:

– Board identification in Microchip MPLAB® X– One green power and status LED– Programming and debugging– Virtual COM port (CDC)– One logic analyzer channel (DGI GPIO)

• USB Powered• Adjustable Target Voltage:

– MIC5353 LDO regulator controlled by the on-board debugger– 2.3-5.1V output voltage (limited by USB input voltage)– 500 mA maximum output current (limited by ambient temperature and output voltage)

1.2 Kit OverviewThe Microchip PIC16F15376 Curiosity Nano Evaluation Kit is a hardware platform to evaluate thePIC16F15376 microcontroller.

Figure 1-1. PIC16F15376 Curiosity Nano Evaluation Kit Overview

PIC16F15376 Curiosity NanoIntroduction


2. Getting Started

2.1 Curiosity Nano Quick StartSteps to start exploring the Curiosity Nano platform:

1. Download Microchip MPLAB® X.2. Launch Microchip MPLAB® X.3. Connect a USB cable (Standard-A to Micro-B or Micro-AB) between the PC and the debug USB

port on the kit.

When the Curiosity Nano kit is connected to your computer for the first time, the operating system willperform a driver software installation. The driver file supports both 32- and 64-bit versions of Microsoft®Windows® XP, Windows Vista®, Windows 7, Windows 8, and Windows 10. The drivers for the kit areincluded with Microchip MPLAB® X.

Once the Curiosity Nano board is powered the green status LED will be lit and Microchip MPLAB® X willauto-detect which Curiosity Nano board is connected. Microchip MPLAB® X will present relevantinformation like data sheets and kit documentation. The PIC16F15376 device is programmed anddebugged by the on-board debugger and therefore no external programmer or debugger tool is required.

2.2 Design Documentation and Relevant LinksThe following list contains links to the most relevant documents and software for the PIC16F15376Curiosity Nano.

• MPLAB® X IDE - MPLAB® X IDE is a software program that runs on a PC (Windows®, Mac OS®,Linux®) to develop applications for Microchip microcontrollers and digital signal controllers. It is calledan Integrated Development Environment (IDE) because it provides a single integrated “environment”to develop code for embedded microcontrollers.

• MPLAB® Code Configurator - MPLAB® Code Configurator (MCC) is a free software plug-in thatprovides a graphical interface to configure peripherals and functions specific to your application.

• Microchip Sample Store - Microchip sample store where you can order samples of devices.• Data Visualizer - Data Visualizer is a program used for processing and visualizing data. The Data

Visualizer can receive data from various sources such as the EDBG Data Gateway Interface foundon Curiosity Nano and Xplained Pro boards and COM Ports.

• PIC16F15376 Curiosity Nano website - Kit information, latest user guide and designdocumentation.

• PIC16F15376 Curiosity Nano on microchipDIRECT - Purchase this kit on microchipDIRECT.

PIC16F15376 Curiosity NanoGetting Started


https://www.microchip.com/mplab/mplab-x-idehttps://www.microchip.com/mplab/mplab-code-configuratorhttps://www.microchip.com/samples/default.aspxhttps://www.microchip.com/mplab/avr-support/data-visualizerhttp://www.microchip.com/DevelopmentTools/ProductDetails.aspx?PartNO=DM164148http://www.microchipdirect.com/ProductSearch.aspx?Keywords=DM164148

3. Curiosity NanoCuriosity Nano is an evaluation platform of small boards with access to most of the microcontrollers I/Os.The platform consists of a series of low pin-count microcontroller (MCU) boards with on-board debuggers,which are integrated with Microchip MPLAB® X. Each board is identified in the IDE, and relevant userguides, application notes, data sheets, and example code are easy to find. The on-board debuggerfeatures a Virtual COM port (CDC) for serial communication to a host PC, and a Data Gateway Interface(DGI) GPIO logic analyzer pin.

3.1 On-board DebuggerThe PIC16F15376 Curiosity Nano contains an on-board debugger for programming and debugging. Theon-board debugger is a composite USB device of several interfaces: A debugger, a mass storage device,a data gateway, and a Virtual COM port (CDC).

Together with Microchip MPLAB® X, the on-board debugger can program and debug the PIC16F15376.

A Data Gateway Interface (DGI) is available for use with the logic analyzer channels for codeinstrumentation, to visualize the program flow. DGI GPIOs can be graphed using the Data Visualizer.

The Virtual COM port is connected to a UART on the PIC16F15376 and provides an easy way tocommunicate with the target application through terminal software.

The on-board debugger controls a Power and Status LED (marked PS) on the PIC16F15376 CuriosityNano. The table below shows how the LED is controlled in different operation modes.

Table 3-1. On-Board Debugger LED Control

Operation Mode Status LED

Boot Loader mode LED blink at 1 Hz during power-up.

Power-up LED is ON.

Normal operation LED is ON.

Programming Activity indicator: The LED flashes slowly during programming/debugging.

Fault The LED flashes fast if a power fault is detected.

Sleep/Off LED is off. The on-board debugger is either in Sleep mode or powered down.This can occur if the kit is externally powered.

3.1.1 Virtual COM PortThe Virtual COM Port is a general purpose serial bridge between a host PC and a target device.

3.1.1.1 OverviewThe on-board debugger implements a composite USB device that includes a standard CommunicationsDevice Class (CDC) interface, which appears on the host as a Virtual COM Port. The CDC can be usedto stream arbitrary data in both directions between the host and the target: All characters sent from thehost will be sent through a UART on the CDC TX pin, and UART characters sent into the CDC RX pin willbe sent back to the host through the Virtual COM Port.

On Windows machines, the CDC will enumerate as Curiosity Virtual COM Port and appear in the Portssection of the device manager. The COM port number is shown here.

PIC16F15376 Curiosity NanoCuriosity Nano


https://www.microchip.com/mplab/avr-support/data-visualizer

On Linux machines, the CDC will enumerate and appear as /dev/ttyACM#.On MAC machines, the CDC will enumerate and appear as /dev/tty.usbmodem#. Depending onwhich terminal program is used, it will appear in the available list of modems as usbmodem#.

Info: On older Windows systems, a USB driver is required for CDC. This driver is included inMPLAB X and Atmel® Studio installations.

3.1.1.2 LimitationsNot all UART features are implemented in the on-board debugger CDC. The constraints are outlinedhere:

• Baud rate must be in the range 1200 bps to 500 kbps. Any baud rate outside this range will be set tothe closest limit, without warning. Baud rate can be changed on-the-fly.

• Character format: Only 8-bit characters are supported.• Parity: Can be odd, even, or none.• Hardware flow control: Not supported.• Stop bits: One or two bits are supported.

3.1.1.3 SignalingDuring USB enumeration, the host OS will start both communication and data pipes of the CDC interface.At this point, it is possible to set and read back the baud rate and other UART parameters of the CDC, butdata sending and receiving will not be enabled.

When a terminal connects on the host, it must assert the DTR signal. This is a virtual control signalimplemented on the USB interface, but not in hardware in the on-board debugger. Asserting DTR fromthe host will indicate to the on-board debugger that a CDC session is active, will enable its level shifters(if available) and start the CDC data send and receive mechanisms.

Deasserting the DTR signal will not disable the level shifters but disable the receiver so no further datawill be streamed to the host. Data packets that are already queued up for sending to the target willcontinue to be sent out, but no further data will be accepted.

Remember: Enable to set up your terminal emulator to assert the DTR signal. Without it, theon-board debugger will not send or receive any data through its UART.

3.1.1.4 Advanced Use

CDC Override ModeIn normal operation, the on-board debugger is a true UART bridge between the host and the device.However, under certain use cases, the on-board debugger can override the basic operating mode anduse the CDC pins for other purposes.

Dropping a text file (with extension .txt) into the on-board debugger’s mass storage drive can be usedto send characters out of the CDC TX pin. The text file must start with the characters:CMD:SEND_UART=

The maximum message length is 50 characters - all remaining data in the frame are ignored.



The default baud rate used in this mode is 9600 bps, but if the CDC is already active or has beenconfigured, the baud rate last used still applies.

USB-Level Framing ConsiderationsSending data from the host to the CDC can be done byte-wise or in blocks, which will be chunked into 64-byte USB frames. Each such frame will be queued up for sending to the CDC TX pin. Transferring a smallamount of data per frame can be inefficient, particularly at low baud rates, since the on-board debuggerbuffers frames and not bytes. A maximum of 4 x 64-byte frames can be active at any time. The on-boarddebugger will throttle the incoming frames accordingly. Sending full 64-byte frames containing data is themost efficient.

When receiving data from the target, the on-board debugger will queue up the incoming bytes into 64-byte frames, which are sent to the USB queue for transmission to the host when they are full. Incompleteframes are also pushed to the USB queue at approximately 100 ms intervals, triggered by USB start-of-frame tokens. Up to 8 x 64-byte frames can be active at any time.

If the host, or the software running on it, fails to receive data fast enough, an overrun will occur. When thishappens, the last-filled buffer frame will be recycled instead of being sent to the USB queue, and a fullframe of data will be lost. To prevent this occurrence, the user must ensure that the CDC data pipe isbeing read continuously, or the incoming data rate must be reduced.

3.1.2 Mass Storage DiskA simple way to program the target device is through drag and drop with .hex files.

3.1.2.1 Mass Storage DeviceThe on-board debugger implements a highly optimized variant of the FAT12 file system that has a numberof limitations, partly due to the nature of FAT12 itself and optimizations made to fulfill its purpose for itsembedded application.

The CURIOSITY drive is USB Chapter 9 compliant as a mass storage device but does not, in any way,fulfill the expectations of a general purpose mass storage device. This behavior is intentional.

The on-board debugger enumerates as a Curiosity Nano USB device that can be found in the disk drivessection of the Windows device manager. The CURIOSITY drive appears in the file manager and claimsthe next available drive letter in the system.

The CURIOSITY drive contains approximately one MB of free space. This does not reflect the size of thetarget device’s Flash in any way. When programming a .hex file, the binary data are encoded in ASCIIwith metadata providing a large overhead, so one MB is a trivially chosen value for disk size.

It is not possible to format the CURIOSITY drive. When programming a file to the target, the filename mayappear in the disk directory listing. This is merely the operating system’s view of the directory, which, inreality, has not been updated. It is not possible to read out the file contents. Removing and replugging thekit will return the file system to its original state, but the target will still contain the application that hasbeen previously programmed.

To erase the target device, copy a text file starting with “CMD:ERASE” onto the disk.

By default, the CURIOSITY drive contains several read-only files for generating icons as well as reportingstatus and linking to further information:

• AUTORUN.ICO - icon file for the Microchip logo.• AUTORUN.INF - system file required for Windows Explorer to show the icon file.• KIT-INFO.HTM - redirect to the development board website.



• KIT-INFO.TXT - a text file containing details about the kit firmware, name, serial number, anddevice.

• STATUS.TXT - a text file containing the programming status of the board.

Info: STATUS.TXT is dynamically updated by the on-board debugger, the contents may becached by the OS and therefore not reflect the correct status.

3.1.2.2 Configuration Words

Configuration Words (PIC® MCU Targets)Configuration Word settings included in the project being programmed after program Flash isprogrammed. The debugger will not mask out any bits in the Configuration Words when writing them, butsince it uses Low-Voltage Programming mode, it is unable to clear the LVP Configuration bit. If theincorrect clock source is selected, for example, and the board does not boot, it is always possible toperform a bulk erase (always done before programming) and restore the device to its default settings.

3.2 Curiosity Nano Standard PinoutThe twelve edge connections closest to the USB connector on Curiosity Nano kits have a standardizedpinout. The program/debug pins have different functions depending on the target programming interfaceas shown in the table and figure below.

Table 3-2. Curiosity Nano Standard Pinout

Debugger Signal ICSPTM Target Description

ID - ID line for extensions.

CDC TX UART RX USB CDC TX line.

CDC RX UART TX USB CDC RX line.

DBG0 ICSPDAT Debug data line.

DBG1 ICSPCLK Debug clock line/DGI GPIO.

DBG2 GPIO0 DGI GPIO.

DBG3 MCLR Reset line.

NC - No connect.

VBUS - VBUS voltage for external use.

VOFF - Voltage Off input.

VTG - Target voltage.

GND - Common ground.



Figure 3-1. Curiosity Nano Standard Pinout

USB

DEBUGGER

PS LEDNC

NC

ID

ID

CDC RX

CDCRX

CDC TX

CDCTX

DBG1

DBG

1

DBG2

DBG

2

VBUS

VBU

S

VOFF

VO

FF

DBG3

DBG

3

DBG0

DBG

0

GND

GN

D

VTG

VTGCURIOSITY NANO

3.3 Power SupplyThe kit is powered through the USB port and contains two LDO regulators, one to generate 3.3V for theon-board debugger, and an adjustable LDO regulator for the target microcontroller PIC16F15376 and itsperipherals. The voltage from the USB connector can vary between 4.4V to 5.25V (according to the USBspecification) and will limit the maximum voltage to the target. The figure below shows the entire powersupply system on PIC16F15376 Curiosity Nano.

Figure 3-2. Power Supply Block Diagram

USBTarget MCU

Power source

Cut strap

Power consumer P3V3 DEBUGGERPower converter

DEBUGGERRegulator

VUSB

TargetRegulator

Power Supply strap

Adjust

Level shifter

VLVLVREG

I/O I/O GPIOstraps

I/O

On/OffMeasure On/Off

ID system#VOFF

PTC Fuse

Power protection

VBUS

Target Power strap

VTG

3.3.1 Target RegulatorThe target voltage regulator is a MIC5353 variable output LDO. The on-board debugger can adjust thevoltage output supplied to the kit target section by manipulating the MIC5353’s feedback voltage. Thehardware implementation is limited to an approximate voltage range from 1.7V to 5.1V. Additional outputvoltage limits are configured in the debugger firmware to ensure that the output voltage never exceedsthe hardware limits of the PIC16F15376 microcontroller. The voltage limits configured in the on-boarddebugger on PIC16F15376 Curiosity Nano are 2.3-5.1V.



Info: The target voltage is set to 3.3V in production. It can be changed through MPLAB Xproject properties. Any change to the target voltage is persistent, even through a power toggle.

The MIC5353 supports a maximum current load of 500 mA. It is an LDO regulator in a small package,placed on a small PCB, and the thermal shutdown condition can be reached at lower loads than 500 mA.The maximum current load depends on the input voltage, the selected output voltage, and the ambienttemperature. The figure below shows the safe operating area for the regulator, with an input voltage of5.1V and an ambient temperature of 23°C.

Figure 3-3. Target Regulator Safe Operation Area

3.3.2 External SupplyPIC16F15376 Curiosity Nano can be powered by an external voltage instead of the on-board targetregulator. When the Voltage Off (VOFF) pin is shorted to ground (GND) the on-board debugger firmwaredisables the target regulator, and it is safe to apply an external voltage to the VTG pin.

WARNING Applying an external voltage to the VTG pin without shorting VOFF to GND may causepermanent damage to the kit.

WARNING Absolute maximum external voltage is 5.5V for the on-board level shifters, and the standardoperating condition of the PIC16F15376 is 2.3-5.5V. Applying a higher voltage may causepermanent damage to the kit.

Programming, debugging, and data streaming is still possible with an external power supply: Thedebugger and signal level shifters will be powered from the USB cable. Both regulators, the debugger,and the level shifters are powered down when the USB cable is removed.

3.3.3 VBUS Output PinPIC16F15376 Curiosity Nano has a VBUS output pin which can be used to power external componentsthat need a 5V supply. The VBUS output pin has a PTC fuse to protect the USB against short circuits. A



side effect of the PTC fuse is a voltage drop on the VBUS output with higher current loads. The chartbelow shows the voltage versus the current load of the VBUS output.

Figure 3-4. VBUS Output Voltage vs. Current

3.4 Target Current MeasurementPower to the PIC16F15376 is connected from the on-board power supply and VTG pin through a 100-milpin header cut Target Power strap marked with “POWER” in silkscreen (J101). To measure the powerconsumption of the PIC16F15376 and other peripherals connected to the board, cut the Target PowerStrap and connect an ammeter over the strap.

Figure 3-5. Target Power Strap

Target Power strap (top side)



Tip: A 100-mil pin header can be soldered into the Target Power strap (J101) footprint for easyconnection of an ammeter. Once the ammeter is not needed anymore, place a jumper-cap onthe pin header.

Info: The on-board level shifters will draw a small amount of current even when they are not inuse. A maximum of 10 µA can be drawn from the target power net, and an additional 2 µA canbe drawn from each I/O pin connected to a level shifter for a total of 20 µA. Disconnect the on-board debugger and level shifters as described in Section 3.5 Disconnecting the On-BoardDebugger and keep any I/O pin connected to a level shifter in tri-state to prevent leakage.

3.5 Disconnecting the On-Board DebuggerThe block diagram below shows all connections between the debugger and the PIC16F15376microcontroller. The rounded boxes represent connections to the board edge on PIC16F15376 CuriosityNano. The signal names shown in Figure 3-1 are printed in silkscreen on the bottom side of the board.

Figure 3-6. On-Board Debugger Connections to the PIC16F15376

DEB

UG

GER

TARGETLevel-Shift

PA04/PA06PA07PA08PA16PA00PA01

USB

DIR x 5

VCC_P3V3

VBUS

VCC

_LEV

EL

VCC

_TA

RGET

DBG0DBG1DBG2DBG3CDC TXCDC RX

CDC RXCDCTX

DBG3DBG2DBG1DBG0

GPIO straps

LDO

VOFF

LDO

VBUS VTG

VCC_EDGE

Power Supply strap Target Power strap

By cutting the GPIO straps with a sharp tool, as shown in Figure 3-7, all I/Os connected between thedebugger and the PIC16F15376 are completely disconnected. To completely disconnect the targetregulator and level shifter power from the target, cut the Power Supply strap (J100) as shown in Figure3-7.

Info: Cutting the connections to the debugger will disable programming, debugging, datastreaming, and the target power supply. The signals will also be disconnected from the boardedge next to the on-board debugger section.



Tip: Solder in 0Ω resistors across the footprints or short-circuit them with tin solder toreconnect any cut signals.

Figure 3-7. Kit Modifications

GPIO straps (bottom side) Power Supply strap (top side)



4. Hardware User Guide

4.1 Connectors

4.1.1 PIC16F15376 Curiosity Nano PinoutAll the PIC16F15376 I/O pins are accessible at the edge connectors on the board. The image belowshows the kit pinout.

Figure 4-1. PIC16F15376 Curiosity Nano Pinout

USB

DEBUGGER

PIC16F15376

SW0

LED0

PS LEDNC

NC

ID

IDCDC RX

CDC RXRD0

CDC TX

CDC TXRD1

DBG1

DBG

1RB6ICSPCLK

DBG2

DBG

2RE2SW0

RC2

RC2TX

RC3

RC3RX

RB2

RB2SDA

RB1

RB1SCL

RC4

RC4MOSI

RC5

RC5MISO

RC6

RC6SCK

RD4

RD4SS

GND

GN

D

RB0

RB0TX

RB3

RB3RX

RB4

RB4

RC7

RC7

RD0

RD0TX

RD1

RD1RX

RD2

RD2

RD3

RD3

GND

GN

D

VBUS

VBU

S

VOFF

VO

FF

DBG3

DBG

3 RE3 MCLR

DBG0

DBG

0 RB7 ICSPDAT

GND

GN

D

VTG

VTG

RA7

RA7 ANA7

RA6

RA6 ANA6

RA5

RA5 ANA5

RA4

RA4 ANA4 PWM

RA3

RA3 ANA3 PWM

RA2

RA2 ANA2

RA1

RA1 ANA1

RA0

RA0 ANA0

GND

GN

D

RD7

RD7

RD6

RD6

RD5

RD5

RB5

RB5

(RC1)

(RC1) SOSCI

(RC0)

(RC0) SOSCO

RE1

RE1

RE0

RE0 LED0

GND

GN

D

PIC16F15376CURIOSITY NANO

Analog

Debug

I2C

SPI

UART

Shared pinout

Peripheral

Port

PWM

Power

Ground

4.1.2 Using Pin HeadersThe edge connector footprint on PIC16F15376 Curiosity Nano has a staggered design where each of theholes is shifted 8 mil (~0.2 mm) off center. The hole shift allows the use of regular 100-mil pin headers onthe kit without soldering. Once the pin headers are firmly in place, they can be used in normalapplications like pin sockets and prototyping boards without any issues.

PIC16F15376 Curiosity NanoHardware User Guide


Tip: Start at one end of the pin header and gradually insert the header along the length of theboard. Once all the pins are in place, use a flat surface to push them all the way in.

Tip: For applications where the pin headers will be used permanently, it is still recommendedto solder them in place.

Important: Once the pin headers are in place, they are hard to remove by hand. Use a set ofpliers and carefully remove the pin headers to avoid damage to the pin headers and printedcircuit board.

4.2 Peripherals

4.2.1 LEDThere is one yellow user LED available on the PIC16F15376 Curiosity Nano kit that can be controlled byeither GPIO or PWM. The LED can be activated by driving the connected I/O line to GND.

Table 4-1. LED Connection

PIC16F15376 Pin Function Shared Functionality

RE0 Yellow LED0 Edge connector

4.2.2 Mechanical SwitchThe PIC16F15376 Curiosity Nano has one mechanical switch. This is a generic user-configurable switch.When the switch is pressed, it will drive the I/O line to ground (GND).

Tip: There is no externally connected pull-up resistor on the switch. To use the switch, makesure that an internal pull-up resistor is enabled on pin RE2.

Table 4-2. Mechanical Switch

PIC16F15376 Pin Description Shared Functionality

RE2 User switch (SW0) Edge connector

4.2.3 Crystal

The PIC16F15376 Curiosity Nano board has a footprint for a 32.768 kHz crystal.

The crystal footprint is connected to the PIC16F15376 by default, but the GPIOs are routed out to theedge connector through open solder straps. The two I/O lines routed to the edge connector aredisconnected by default to both reduce the chance of contention to the crystal as well as removingexcessive capacitance on the lines when using the crystal. To use the pins RC0 and RC1 as GPIO on theedge connector, some hardware modification is needed. Add a solder blob to the open straps on the



bottom side to connect the routing. The crystal should be disconnected when using the pin as GPIO, asthis might harm the crystal.

Table 4-3. Crystal Connections

PIC16F15376 Pin Function Shared Functionality

RC0 SOSC0 (Crystal output) Edge connector

RC1 SOSCI (Crystal input) Edge connector

4.2.4 On-Board Debugger ImplementationPIC16F15376 Curiosity Nano features an on-board debugger that can be used to program and debug thePIC16F15376 using ICSP. The on-board debugger also includes a Virtual Com port interface over UARTand DGI GPIO. Microchip MPLAB® X can be used as a front-end for the on-board debugger forprogramming and debugging. Data Visualizer can be used as a front-end for the CDC and DGI GPIO.

4.2.4.1 On-Board Debugger ConnectionsThe table below shows the connections between the target and the debugger section. All connectionsbetween the target and the debugger are tri-stated as long as the debugger is not actively using theinterface. Hence there is little contamination of the signals the pins can be configured to anything the userwants.

For further information on how to use the capabilities of the on-board debugger, see Section 3. CuriosityNano.

Table 4-4. On-Board Debugger Connections

PIC16F15376Pin

Debugger Pin Function Shared Functionality

RD1 CDC TX UART RX (PIC16F15376 RXline)

Edge connector

RD0 CDC RX UART TX (PIC16F15376 TX line) Edge connector

RB7 DBG0 ICSPDAT Edge connector

RB6 DBG1 ICSPCLK Edge connector

RE2 DBG2 GPIO Edge connector

RE3 DBG3 MCLR Edge connector



https://www.microchip.com/mplab/avr-support/data-visualizer

5. Hardware Revision History and Known IssuesThis user guide provides the latest available revision of the kit. This section contains information aboutknown issues, a revision history of older revisions, and how older revisions differ from the latest revision.

5.1 Identifying Product ID and RevisionThe revision and product identifier of the PIC16F15376 Curiosity Nano can be found in two ways; eitherthrough Microchip MPLAB® X or by looking at the sticker on the bottom side of the PCB.

By connecting a PIC16F15376 Curiosity Nano to a computer with Microchip MPLAB® X running, aninformation window will pop up. The first six digits of the serial number, which is listed under kit details,contain the product identifier and revision.

The same information can be found on the sticker on the bottom side of the PCB. Most kits will print theidentifier and revision in plain text as A09-nnnn\rr, where “nnnn” is the identifier and “rr” is the revision.The boards with limited space have a sticker with only a QR-code, containing the product identifier,revision and the serial number.

The serial number string has the following format:

"nnnnrrssssssssss"

n = product identifier

r = revision

s = serial number

The product identifier for PIC16F15376 Curiosity Nano is A09-3251.

5.2 Revision 2Revision 2 adds the Target Power strap and staggered the holes along the edge of the PCB forconvenient use of pin headers without soldering.

5.3 Revision 1Revision 1 is the initially released revision with limited distribution.

The holes along the edge of revision 1 are not staggered as described in 4.1.2 Using Pin Headers, andrequires that any pin headers must be soldered into the board for use.

Revision 1 does not have the Target Power strap described in 3.4 Target Current Measurement, insteadcurrent can be measured across the Power Supply strap as described in 3.5 Disconnecting the On-Board Debugger.

PIC16F15376 Curiosity NanoHardware Revision History and Known Issues


Figure 5-1. PIC16F15376 Curiosity Nano Revision 1

PIC16F15376 Curiosity NanoHardware Revision History and Known Issues


6. Document Revision HistoryDoc. rev. Date Comment

A 07/2019 Initial document release.

PIC16F15376 Curiosity NanoDocument Revision History


7. Appendix

7.1 SchematicFigure 7-1. PIC16F15376 Curiosity Nano Schematic

11

22

33

44

55

66

77

88

DD

CC

BB

AA

2 of

4

PIC

16F

1537

6 C

urio

sity

Nan

o

09.0

5.20

19PI

C16

F153

76_C

urio

sity

_Nan

o_Ta

rget

_MC

U.S

chD

oc

Proj

ect T

itle

PCB

Ass

embl

y N

umbe

r:PC

BA

Rev

isio

n:

File

:PC

B N

umbe

r:PC

B

Rev

isio

n:

Des

igne

d wi

th

Dra

wn

By:

Mic

roch

ip N

orw

ay

Shee

t Titl

eTa

rget

MC

U

Engi

neer

:TF

, HN

A08

-298

02

Size

A3

A09

-325

12

Page

:D

ate:A

ltium

.com

GN

D

VC

C_T

AR

GET

32.7

68kH

zK

yoce

ra C

orpo

ratio

nST

3215

SB32

768C

0HPW

BB

XC

200

N.M

.

10p

C20

3N

.M.

GN

D

100n

C20

2

GN

D

VC

C_T

AR

GET

100n

C20

0

GN

D32kH

z C

RY

STA

L

1kR203

1kR203

USE

R L

ED

VC

C_T

AR

GET

GN

D

USE

R B

UTT

ON

1k1kR202

YELLOWLEDSML-D12Y1WT86

2 1D200

TS604VM1-035CR13

4 2

SW20

0

GN

D

GN

DG

ND

GN

DG

ND

J203

J201

J202

J204

J209

PIC

16F1

5376

2.2u

FC

205

GN

D

DBG0

CDC_

UART

TXRX

UA

RT

CDC_TXCDC_RX

DBG2

DBG1

DBG3

DBG2

DE

BU

GG

ER

CO

NN

EC

TIO

NS

DBG1

DBG3

DBG0

CDC_

UART

CDC_

UART

TXRX

UA

RT

DBG1

DBG3

DBG2

DBG0

PIC

16F1

5376

Signal

DB

G0

DB

G1

DB

G2

DB

G3

Interface

CD

C T

X

CD

C R

X

UA

RT

RX

UA

RT

TX

VT

G

VOFF

ID_S

YS

ID_SYS

VOFF

2.2u

FC

205

GN

D

TA

RG

ET B

UL

K

100kR200

VC

C_T

AR

GET

100kR200

VC

C_T

AR

GET

MC

LR

PU

LL-

UP

VB

US

RC

7R

D4_

SSR

D5

RD

6R

D7

RB

0_TX

RB

1_SC

LR

B2_

SDA

RC

0_SO

SCO

RA

6_A

NA

6R

A7_

AN

A7

RE2

_SW

0R

E1R

E0_L

ED0

RA

5_A

NA

5R

A4_

AN

A4_

PWM

RB3_RXRB4RB5RB6_ICSPCLKRB7_ICSPDATRE3_MCLRRA0_ANA0RA1_ANA1RA2_ANA2RA3_ANA3_PWM

RC6_SCKRC5_MISORC4_MOSIRD3RD2

RD0_TXRD1_RX

RC3_RXRC2_TXRC1_SOSCI

CD

C R

X3

CD

C T

X4

DB

G1

5D

BG

26

0 TX

71

RX

82

SDA

93

SCL

104

MO

SI11

5 M

ISO

126

SCK

137

SS14

GN

D15

0 (T

X)

161

(RX

)17

218

319

020

GN

D24

DB

G3

46D

BG

045

GN

D44

VC

C43

PWM

338

AD

C 2

37A

DC

136

AD

C 0

35G

ND

34

430

426

GN

D25

AD

C 7

42A

DC

641

AD

C 5

40PW

M 4

39

DEB

UG

GER

TAR

GET

ID2

VO

FF47

121

222

323

527

628

729

531

632

733

RES

ERV

ED1

VB

US

48

CN

AN

O48

-pin

edg

e co

nnec

tor

J200

RD

0_TX

RD

1_R

XR

B6_

ICSP

CLK

RE2

_SW

0R

C2_

TXR

C3_

RX

RB

2_SD

AR

B1_

SCL

RC

4_M

OSI

RC

5_M

ISO

RC

6_SC

KR

D4_

SS

RD

0_TX

RD

1_R

XR

D2

RD

3

RB

0_TX

RB

3_R

XR

B4

RC

7

RE3

_MC

LRR

B7_

ICSP

DA

T

RA

7_A

NA

7R

A6_

AN

A6

RA

5_A

NA

5R

A4_

AN

A4_

PWM

RA

3_A

NA

3_PW

MR

A2_

AN

A2

RA

1_A

NA

1R

A0_

AN

A0

RD

7R

D6

RD

5R

B5

RC

1_SO

SCI

RC

0_SO

SCO

RE1

RE0

_LED

0

RE2_SW0

RE0_LED0

J205

J206

RC0_SOSCO

RC1_SOSCI

ICSP

DA

T

ICSP

CLK

GPI

O

MC

LR

2.3V

- 5.

5V

PRO

G/D

EB

UG

PU

LL

47k 47kR204

47k 47kR205

GN

D

DB

G0

DB

G1

J211

J210

J207

J208

GN

D

RE3

_MC

LR

PIC

16F1

5376

T-I/M

V

RC7

1RD

42

RD5

3RD

64

RD7

5VS

S6

VDD

7RB

08

RB1

9RB

210

RB3 11RB4 12RB5 13RB6/ICSPCLK 14RB7/ICSPDAT 15RE3/MCLR 16RA0 17RA1 18RA2 19RA3 20

RA4

21RA

522

RE0

23RE

124

RE2

25VD

D26

VSS

27RA

728

RA6

29RC

030

RC131 RC232 RC333 RD034 RD135 RD236 RD337 RC438 RC539 RC640PAD41

U20

0

(RC

1)_S

OSC

I(R

C0)

_SO

SCO

NC

10p

C20

4N

.M.

VC

C_E

DG

E

VC

C_E

DG

E

NO

TE o

n U

AR

T/C

DC

:

RX

/TX

on

the

head

er d

enot

es th

e in

put/o

utpu

t di

rect

ion

of th

e si

gnal

resp

ectiv

e to

it's

sour

ce.

CD

C T

X is

out

put f

rom

the

on-b

oard

deb

ugge

r.C

DC

RX

is in

put t

o th

e on

-boa

rd d

ebug

ger.

TX is

out

put f

rom

the

TAR

GET

dev

ice.

RX

is in

put t

o th

e TA

RG

ET d

evic

e.

NO

TE o

n I2

C:

No

pull-

ups o

n bo

ard.

Pul

l-ups

shou

ld b

e m

ount

ed c

lose

to sl

ave

devi

ce(s

).

PIC16F15376 Curiosity NanoAppendix


11

22

33

44

55

66

77

88

DD

CC

BB

AA

3 of

4

PIC

16F

1537

6 C

urio

sity

Nan

o

09.0

5.20

19PI

C16

F153

76_C

urio

sity

_Nan

o_D

ebug

ger.S

chD

oc

Proj

ect T

itle

PCB

Ass

embl

y N

umbe

r:PC

BA

Rev

isio

n:

File

:PC

B N

umbe

r:PC

B

Rev

isio

n:

Des

igne

d wi

th

Dra

wn

By:

Mic

roch

ip N

orw

ay

Shee

t Titl

eD

ebug

ger

Engi

neer

:TF

, HN

A08

-298

02

Size

A3

A09

-325

12

Page

:D

ate:A

ltium

.com

GN

D

USB

D_P

USB

D_N

100n

C10

7

100n

C10

8

RXTX

UA

RT

CDC_

UART

1kR

107

VC

C_P

3V3

100n

C10

4

GN

D

SRST

STA

TUS_

LED

SHIE

LD

VC

C_P

3V3

GN

D

TP10

0

Test

poin

t Arr

ay

12

34

56

78

910

TCK

TDO

TMS

Vsu

pTD

IG

ND

TRST

SRST

VTr

efG

ND

J102

GN

D

4.7u

F

C10

0

DBG0

DB

G0

21

GR

EEN

LED

SML-

P12M

TT86

R

D10

0

VBUS

1D-

2D+

3

GND

5SH

IELD

16

SHIE

LD2

7

ID4

SHIE

LD3

8SH

IELD

49 M

U-M

B01

42A

B2-

269

J105

PAD

33PA

D

PA00

1PA

012

PA02

3PA

034

GND 10VDDANA 9

PA04

5PA

056

PA06

7PA

078

PA08 11PA09 12PA10 13PA11 14PA14 15PA15 16

PA16

17PA

1718

PA18

19PA

1920

PA22

21US

B_SO

F/PA

2322

USB_

DM/P

A24

23US

B_DP

/PA2

524

PA2725 RESETN26 PA2827 GND28 VDDCORE29 VDDIN30 SWDCLK/PA3031 SWDIO/PA3132

SAM

D21

E18A

-MU

TU

100

VOUT

1

VOUT

2

GND 3

EN4

VIN

6

NC5

EP 7

MIC

5528

-3.3

YM

TU

101

VC

C_V

BU

SV

CC

_P3V

3

GN

D

USB

D_P

USB

D_N

GN

D

1uC10

6V

CC

_MC

U_C

OR

E

VC

C_P

3V3

VC

C_P

3V3

GN

D

4.7u

F

C10

0VO

UT1

VOUT

2

GNGGD 3

EN4

VIN

6

NC5

EP 7

MIC

5528

-3.3

YM

TU

101

VC

C_V

BU

SV

CC

_P3V

3

GN

D

2.2u

FC

101

GN

D

74LV

C1T

45FW

4-7

VCCA

1VC

CB6

A3

GND

2DI

R5

B4

U10

3

VC

C_P

3V3

GN

D

74LV

C1T

45FW

4-7

VCCA

1VC

CB6

A3

GND

2DI

R5

B4

U10

4

VC

C_P

3V3

GN

D

74LV

C1T

45FW

4-7

VCCA

1VC

CB6

A3

GND

2DI

R5

B4

U10

5

VC

C_P

3V3

GN

D

GN

D GN

D

GN

D

GN

D

74LV

C1T

45FW

4-7

VCCA

1VC

CB6

A3

GND

2DI

R5

B4

U10

7

VC

C_P

3V3

GN

DDB

G2

DB

G3_

CTR

L

S1_0

_TX

S1_1

_RX

S0_2

_TX

DA

CV

TG_A

DC

RES

ERV

ED

S0_3

_CLK

DBG0_CTRL

CD

C_T

X_C

TRL

BO

OT

DE

BUG

GE

R P

OW

ER

/ST

AT

US

LED

1kR

107

VC

C_P

3V3

21

GR

EEN

LED

SML-

P12M

TT86

R

D10

0

EN1

BYP

6

VOUT

4

GND

2

VIN

3

NC/A

DJ5

GND 7M

IC53

53U

102

VC

C_V

BU

S

100n

C10

2

GN

D

GN

D

47kR101

27kR104 G

ND

33k

R10

6

GN

D

EN1

BYP

6

VOUT

4

GND

2

VIN

3

NC/A

DJ5

GND 7M

IC53

53U

102

VC

C_V

BU

S

100n

C10

2

GN

D

GN

D

47kR101

27kR104 G

ND

33k

R10

6

2.2u

F

C10

3 GN

D

1k1kR

108

J100

VC

C_L

EVEL

VC

C_R

EGU

LATO

R

74LV

C1T

45FW

4-7

VCCA

1VC

CB6

A3

GND

2DI

R5

B4

U10

6

VC

C_P

3V3

GN

DDB

G1

CD

C_R

XC

DC

_TX

DBG3

DBG1_CTRL

DE

BU

GG

ER

RE

GU

LA

TO

R

REG_ENABLE

REG

_EN

AB

LE

47k 47kR103

VC

C_L

EVEL

VC

C_L

EVEL

VC

C_L

EVEL

VC

C_L

EVEL

VC

C_L

EVEL

47k 47kR102

47k 47kR105

SWC

LK

GN

D

47k 47kR100 G

ND

DB

G2

S0_0

_RX

DB

G1_

CTR

L

DB

G0_

CTR

L

GN

D

DB

G3

OPE

N D

RA

IN

TA

RG

ET

AD

JUST

AB

LE

REG

ULA

TO

R

SRST

100n

C10

4

GN

D

SRST

VC

C_P

3V3

GN

D

Test

poin

t Arr

ay

12

34

56

78

910

TCK

TDO

TMS

Vsu

pTD

IG

ND

TRST

SRST

VTr

efG

ND

J102

SWC

LK

DEB

UG

GER

TE

STPO

INT

s DBG2_CTRL

VO

FFC

DC

_RX

_CTR

L

47k 47kR109

DB

G1

CD

C_T

X_C

TRL

CD

C_R

X_C

TRL

SWC

LK

REG_ADJUST

DBG2_GPIO

DB

G3_

CTR

L

DB

G2_

CTR

L

UPD

I

UPD

I

GPI

O

GPI

O

RES

ET

Signal

DB

G0

DB

G1

DB

G2

DB

G3

ICSP

Interface

DA

T

CLK

GPI

O

MC

LR

DB

G3

CD

C T

X

CD

C R

X

UA

RT

RX

UA

RT

TX

UA

RT

RX

UA

RT

TX

TA

RG

ET

TA

RG

ET

1k 1kR

110

VBUS_ADC

DM

N65

D8L

FB

1

23

Q10

1

VC

C-

-

ID_S

YS

VOFF

1kR112

VC

C_P

3V3

ID_S

YSID

_SYS

1kR112

VC

C_P

3V3

VTG

_AD

CD

AC

MIC

9416

3

VIN

B2VO

UTA1

VIN

A2

ENC2

GND

C1VO

UTB1

U10

8

GN

D

ID_S

YS

VTG

_EN

VTG_EN

VBUS_ADC

SWD

IO

ID_S

YS

TP10

1G

ND

SWD

IO

VO

FF

47k 47kR111 G

ND

ID P

IN

DE

BU

GG

ER U

SB M

ICR

O-B

CO

NN

EC

TO

R

GN

D

USB

D_P

USB

D_N SH

IELD

VBUS

1D-

2D+

3

GND

5SH

IELD

16

SHIE

LD2

7

ID4

SHIE

LD3

8SH

IELD

49 M

U-M

B01

42A

B2-

269

J105

VB

US

MC

3621

3

F100

VC

C_V

BU

S

VC

C_E

DG

E

J101

VC

C_T

AR

GET

Prog

ram

min

g co

nnec

tor

for f

acto

ry p

rogr

amm

ing

of

Deb

ugge

r

MIC

5528

:V

in: 2

.5V

to 5

.5V

Vou

t: Fi

xed

3.3V

Imax

: 500

mA

Dro

pout

: 260

mV

@ 5

00m

AA

djus

tabl

e ou

tput

and

lim

itatio

ns:

- The

onb

oard

deb

ugge

r can

adj

ust t

he o

utpu

t vol

tage

of t

he re

gula

tor b

etw

een

1.25

V a

nd 5

.1V

to th

e ta

rget

.- T

he le

vel s

hifte

rs h

ave

a m

inim

al v

olta

ge le

vel o

f 1.6

5V a

nd w

ill li

mit

the

min

imum

ope

ratin

g vo

ltage

allo

wed

for t

he

targ

et to

still

allo

w c

omm

unic

atio

n.- T

he o

utpu

t sw

itch

has a

min

imal

vol

ateg

e le

vel o

f 1.7

0V a

nd w

ill li

mit

the

min

imum

vol

tage

del

iver

ed to

the

targ

et.

- Firm

war

e co

nfig

urat

ion

will

lim

it th

e vo

ltage

rang

e to

be

with

in th

e th

e ta

rget

spec

ifica

tion.

- Firm

war

e fe

edba

ck lo

op w

ill a

djus

t the

out

put v

olta

ge a

ccur

acy

to w

ithin

0.5

%.

PTC

Res

etta

ble

fuse

:H

old

curr

ent:

500m

ATr

ip c

urre

nt: 1

000m

A

MIC

5353

:V

in: 2

.6V

to 6

VV

out:

1.25

V to

5.1

VIm

ax: 5

00m

AD

ropo

ut (t

ypic

al):

50m

V@

150m

A, 1

60m

V @

500

mA

Acc

urac

y: 2

% in

itial

Ther

mal

shut

dow

n an

d cu

rren

t lim

it

Max

imum

out

put v

olta

ge is

lim

ited

by th

e in

put v

olta

ge a

nd th

e dr

opou

t vol

tage

in th

e re

gula

tor.

(Vm

ax =

Vin

- dr

opou

t)

J100

:C

ut-s

trap

used

for f

ull s

epar

atio

n of

targ

et p

ower

from

the

leve

l shi

fters

and

on-

boar

d re

gula

tors

.- F

or c

urre

nt m

easu

rem

ents

usi

ng a

n ex

tern

al p

ower

supp

ly, t

his s

trap

coul

d be

cut

for m

ore

accu

rate

mea

sure

men

ts. L

eaka

ge b

ack

thro

ugh

the

switc

h is

in th

e m

icro

am

pere

rang

e.

J101

:Th

is is

foot

prin

t for

a 1

x2 1

00m

il pi

tch

pin-

head

er th

at c

an b

e us

ed fo

r eas

y cu

rren

t mea

sure

men

t to

the

targ

et m

icro

cont

rolle

r and

the

LED

/ B

utto

n. T

o us

e th

e fo

otpr

int:

- Cut

the

track

bet

wee

n th

e ho

les,

and

mou

nt a

pin

-hea

der



7.2 Assembly DrawingFigure 7-2. PIC16F15376 Curiosity Nano Assembly Drawing Top

PIC®MCU

b

PAC10002 PAC10001 COC100 PAC10102 PAC10101 COC101

PAC10201 PAC10202 COC102

PAC10301 PAC10302 COC103

PAC10402 PAC10401 COC104


PAC10802

PAC10801 COC108

PAC20001 PAC20002 COC200

PAC20201 PAC20202 COC202

PAC20302

PAC20301 COC203 PAC20402 PAC20401 COC204

PAC20501 PAC20502 COC205

PAD10001 PAD10002 COD100

PAD20002

PAD20001 COD200

PAF10001

PAF10002 COF100

PAJ10002 PAJ10001 COJ100

PAJ10101 PAJ10102 COJ101

PAJ10206

PAJ10205

PAJ10204

PAJ10203

PAJ10202

PAJ10201 COJ102

PAJ105011

PAJ105010 PAJ10508

PAJ10509 PAJ10507

PAJ10506 PAJ10501

PAJ10502

PAJ10503

PAJ10504

PAJ10505

PAJ10500

COJ105

PAJ200048 PAJ200047

PAJ200024 PAJ20002 PAJ20001

PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029

PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023

PAJ200026 PAJ200025 PAJ200027 PAJ200028 PAJ20000

COJ200

PAJ20102 PAJ20101 COJ201

PAJ20202 PAJ20201 COJ202

PAJ20302 PAJ20301 COJ203

PAJ20402 PAJ20401 COJ204 PAJ20502 PAJ20501 COJ205 PAJ20602 PAJ20601 COJ206

PAJ20702 PAJ20701 PAJ20705 COJ207

PAJ20801 PAJ20802 PAJ20805 COJ208 PAJ20901 PAJ20902 COJ209

PAJ21002 PAJ21001 COJ210

PAJ21102 PAJ21101 COJ211

COLABEL1

PAQ10101 PAQ10102 PAQ10103 PAQ10100 COQ101

PAR10001 PAR10002 COR100

PAR10102 PAR10101 COR101

PAR10201 PAR10202 COR102

PAR10301 PAR10302 COR103

PAR10402 PAR10401 COR104

PAR10501

PAR10502 COR105

PAR10602 PAR10601 COR106

PAR10701 PAR10702 COR107

PAR10802 PAR10801 COR108

PAR10902

PAR10901 COR109 PAR11002 PAR11001 COR110

PAR11102 PAR11101 COR111

PAR11202 PAR11201 COR112

PAR20001 PAR20002 COR200

PAR20201 PAR20202 COR202 PAR20301 PAR20302 COR203

PAR20401 PAR20402 COR204

PAR20501 PAR20502 COR205

PASW20003

PASW20004 PASW20002

PASW20001 COSW200

PATP10001 COTP100 PATP10101 COTP101

PAU10009 PAU10008 PAU10007

PAU10006

PAU10005 PAU10004

PAU10003

PAU10002

PAU10001

PAU100010 PAU100011 PAU100012 PAU100013 PAU100014 PAU100015 PAU100016 PAU100017 PAU100018

PAU100019

PAU100020 PAU100021

PAU100022

PAU100023

PAU100024

PAU100025 PAU100026 PAU100027 PAU100028 PAU100029 PAU100030 PAU100031 PAU100032

PAU100033 COU100

PAU10101 PAU10102 PAU10103

PAU10106 PAU10105 PAU10104

PAU10107

PAU10100 COU101 PAU10201 PAU10202 PAU10203

PAU10206

PAU10205 PAU10204

PAU10207 COU102

PAU10301

PAU10302 PAU10303 PAU10304

PAU10305 PAU10306

PAU10300 COU103

PAU10401

PAU10402 PAU10403 PAU10404

PAU10405 PAU10406

PAU10400 COU104

PAU10501

PAU10502 PAU10503 PAU10504

PAU10505 PAU10506

PAU10500 COU105

PAU10601

PAU10602 PAU10603 PAU10604

PAU10605 PAU10606

PAU10600 COU106

PAU10701

PAU10702 PAU10703 PAU10704

PAU10705 PAU10706

PAU10700 COU107

PAU1080C2 PAU1080C1 PAU1080B2 PAU1080B1

PAU1080A2 PAU1080A1 COU108

PAU20001 PAU20002 PAU20003 PAU20004

PAU20005 PAU20006 PAU20007 PAU20008 PAU20009

PAU200010 PAU200011 PAU200012

PAU200013 PAU200014 PAU200015 PAU200016

PAU200017 PAU200018 PAU200019 PAU200020 PAU200021 PAU200022 PAU200023 PAU200024 PAU200025 PAU200026 PAU200027 PAU200028 PAU200029 PAU200030

PAU200031 PAU200032 PAU200033 PAU200034 PAU200035 PAU200036 PAU200037 PAU200038 PAU200039 PAU200040

PAU200041 PAU20000 COU200 PAXC20001 PAXC20002

COXC200

Figure 7-3. PIC16F15376 Curiosity Nano Assembly Drawing Bottom

ctR


PAC10201 PAC10202 COC102

PAC10301 PAC10302 COC103

PAC10402 PAC10401 COC104


PAC10802

PAC10801 COC108

PAC20001 PAC20002 COC200

PAC20201 PAC20202 COC202

PAC20302

PAC20301 COC203 PAC20402 PAC20401 COC204

PAC20501 PAC20502 COC205

PAD10001 PAD10002 COD100

PAD20002

PAD20001 COD200

PAF10001

PAF10002 COF100

PAJ10002 PAJ10001 COJ100

PAJ10101 PAJ10102 COJ101

PAJ10206

PAJ10205

PAJ10204

PAJ10203

PAJ10202

PAJ10201 COJ102

PAJ105011

PAJ105010 PAJ10508

PAJ10509 PAJ10507

PAJ10506 PAJ10501

PAJ10502

PAJ10503

PAJ10504

PAJ10505

PAJ10500

COJ105

PAJ200048 PAJ200047

PAJ200024 PAJ20002 PAJ20001

PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029

PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023

PAJ200026 PAJ200025 PAJ200027 PAJ200028 PAJ20000

COJ200

PAJ20102 PAJ20101 COJ201

PAJ20202 PAJ20201 COJ202

PAJ20302 PAJ20301 COJ203

PAJ20402 PAJ20401 COJ204 PAJ20502 PAJ20501 COJ205 PAJ20602 PAJ20601 COJ206

PAJ20702 PAJ20701 PAJ20705 COJ207

PAJ20801 PAJ20802 PAJ20805 COJ208 PAJ20901 PAJ20902 COJ209

PAJ21002 PAJ21001 COJ210

PAJ21102 PAJ21101 COJ211

COLABEL1

PAQ10101 PAQ10102 PAQ10103 PAQ10100 COQ101

PAR10001 PAR10002 COR100

PAR10102 PAR10101 COR101

PAR10201 PAR10202 COR102

PAR10301 PAR10302 COR103

PAR10402 PAR10401 COR104

PAR10501

PAR10502 COR105

PAR10602 PAR10601 COR106

PAR10701 PAR10702 COR107

PAR10802 PAR10801 COR108

PAR10902

PAR10901 COR109 PAR11002 PAR11001 COR110

PAR11102 PAR11101 COR111

PAR11202 PAR11201 COR112

PAR20001 PAR20002 COR200

PAR20201 PAR20202 COR202 PAR20301 PAR20302 COR203

PAR20401 PAR20402 COR204

PAR20501 PAR20502 COR205

PASW20003

PASW20004 PASW20002

PASW20001 COSW200

PATP10001 COTP100 PATP10101 COTP101

PAU10009 PAU10008 PAU10007

PAU10006

PAU10005 PAU10004

PAU10003

PAU10002

PAU10001

PAU100010 PAU100011 PAU100012 PAU100013 PAU100014 PAU100015 PAU100016 PAU100017 PAU100018

PAU100019

PAU100020 PAU100021

PAU100022

PAU100023

PAU100024

PAU100025 PAU100026 PAU100027 PAU100028 PAU100029 PAU100030 PAU100031 PAU100032

PAU100033 COU100

PAU10101 PAU10102 PAU10103

PAU10106 PAU10105 PAU10104

PAU10107

PAU10100 COU101 PAU10201 PAU10202 PAU10203

PAU10206

PAU10205 PAU10204

PAU10207 COU102

PAU10301

PAU10302 PAU10303 PAU10304

PAU10305 PAU10306

PAU10300 COU103

PAU10401

PAU10402 PAU10403 PAU10404

PAU10405 PAU10406

PAU10400 COU104

PAU10501

PAU10502 PAU10503 PAU10504

PAU10505 PAU10506

PAU10500 COU105

PAU10601

PAU10602 PAU10603 PAU10604

PAU10605 PAU10606

PAU10600 COU106

PAU10701

PAU10702 PAU10703 PAU10704

PAU10705 PAU10706

PAU10700 COU107

PAU1080C2 PAU1080C1 PAU1080B2 PAU1080B1

PAU1080A2 PAU1080A1 COU108

PAU20001 PAU20002 PAU20003 PAU20004

PAU20005 PAU20006 PAU20007 PAU20008 PAU20009

PAU200010 PAU200011 PAU200012

PAU200013 PAU200014 PAU200015 PAU200016

PAU200017 PAU200018 PAU200019 PAU200020 PAU200021 PAU200022 PAU200023 PAU200024 PAU200025 PAU200026 PAU200027 PAU200028 PAU200029 PAU200030

PAU200031 PAU200032 PAU200033 PAU200034 PAU200035 PAU200036 PAU200037 PAU200038 PAU200039 PAU200040

PAU200041 PAU20000 COU200 PAXC20001 PAXC20002

COXC200



7.3 Curiosity Nano Base for Click boards™Figure 7-4. PIC16F15376 Curiosity Nano Pinout Mapping

USB

DEB

UG

GER

PIC1

6F15

376

SW0

LED

0

PS L

EDNC

NC

ID

ID

CDC RX

CDC RX

RD0

CDC TX

CDC TX

RD1

DBG1

DBG1

RB6

ICSPCLK

DBG2

DBG2

RE2

SW0

RC2

RC2

TX

RC3

RC3

RX

RB2

RB2

SDA

RB1

RB1

SCL

RC4

RC4

MOSI

RC5

RC5

MISO

RC6

RC6

SCK

RD4

RD4

SS

GND

GND

RB0

RB0

TX

RB3

RB3

RX

RB4

RB4

RC7

RC7

RD0

RD0

TX

RD1

RD1

RX

RD2

RD2

RD3

RD3

GND

GND

VBUS

VBUS

VOFF

VOFF

DBG3

DBG3

RE3

MCLR

DBG0

DBG0

RB7

ICSPDAT

GND

GND

VTG

VTG

RA7

RA7

ANA7

RA6

RA6

ANA6

RA5

RA5

ANA5

RA4

RA4

ANA4

PWM

RA3

RA3

ANA3

PWM

RA2

RA2

ANA2

RA1

RA1

ANA1

RA0

RA0

ANA0

GND

GND

RD7

RD7

RD6

RD6

RD5

RD5

RB5

RB5

(RC1)

(RC1)

SOSCI

(RC0)

(RC0)

SOSCO

RE1

RE1

RE0

RE0

LED0

GND

GND

PIC1

6F15

376

CURI

OSI

TY N

AN

O

Analog

Debug

I2C

SPI

UART

Shared pinout

Peripheral

Port

PWM

Power

Ground

1

AN

PWM

RST

INT

CSRX

SCK

TXM

ISO

SCL

MO

SISD

A+3

.3V

+5V

GN

DG

ND

2

AN

PWM

RST

INT

CSRX

SCK

TXM

ISO

SCL

MO

SISD

A+3

.3V

+5V

GN

DG

ND

3

AN

PWM

RST

INT

CSRX

SCK

TXM

ISO

SCL

MO

SISD

A+3

.3V

+5V

GN

DG

ND

Xpl

aine

d Pr

o Ex

tens

ion

EXT1

12

1920

Curio

sity

Nan

o Ba

sefo

r clic

k bo

ards

TM

RA0

RA3

RA7

RA6

RD4

RC3

RC6

RC2

RC5

RB1

RC4

RB2

+3.3V

+5V

GND

GND

RA1

RA4

RC7

RB4

RD6

RB3

RC6

RB0

RC5

RB1

RC4

RB2

+3.3V

+5V

GND

GND

RA2

RA5

RD5

RB5

RD7

RC3

RC6

RC2

RC5

RB1

RC4

RB2

+3.3V

+5V

GND

GND

ID

GND

RA1

RA2

RC7

RD5

RA4

RA5

RB4

RD7

RB2

RB1

RB3

RB0

RD6

RC4

RC5

RC6

GND

+3.3V



7.4 Connecting External DebuggersEven though there is an on-board debugger, external debuggers can be connected directly to thePIC16F15376 Curiosity Nano to program/debug the PIC16F15376. The on-board debugger keeps all thepins connected to the PIC16F15376 and board edge in tri-state when not actively used. Therefore, theon-board debugger will not interfere with any external debug tools.

Figure 7-5. Connecting the MPLAB PICkit™ 4 In-Circuit Debugger/Programmer to PIC16F15376Curiosity Nano

2345678 1

MCLRVDD GroundDATACLOCK

3 = Ground

4 = PGD

5 = PGC

6 = Unused7 = Unused

8 = Unused

2 = VDD 1 = MCLR

MPLAB® PICkit™ 4

USB

DEBUGGER

PS LEDNC

ID

CDC RX

CDC TX

DBG1

DBG2

VBUS

VOFF

DBG3

DBG0

GND

VTGCURIOSITY NANO

CAUTION The MPLAB PICkit 4 In-circuit Debugger/Programmer is capable of delivering high voltage onthe MCLR pin. R110 can be permanently damaged by the high voltage. If R110 is broken, theon-board debugger can not enter programming mode of the PIC16F15376, and will typically failat reading the device ID.



CAUTION To avoid contention between the external debugger and the on-board debugger, do not start anyprogramming/debug operation with the on-board debugger through Microchip MPLAB® X ormass storage programming while the external tool is active.



The Microchip Website

Microchip provides online support via our website at http://www.microchip.com/. This website is used tomake files and information easily available to customers. Some of the content available includes:

• Product Support – Data sheets and errata, application notes and sample programs, designresources, user’s guides and hardware support documents, latest software releases and archivedsoftware

• General Technical Support – Frequently Asked Questions (FAQs), technical support requests,online discussion groups, Microchip design partner program member listing

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To register, go to http://www.microchip.com/pcn and follow the registration instructions.

Customer Support

Users of Microchip products can receive assistance through several channels:

• Distributor or Representative• Local Sales Office• Embedded Solutions Engineer (ESE)• Technical Support

Customers should contact their distributor, representative or ESE for support. Local sales offices are alsoavailable to help customers. A listing of sales offices and locations is included in this document.

Technical support is available through the web site at: http://www.microchip.com/support

Microchip Devices Code Protection Feature

Note the following details of the code protection feature on Microchip devices:

• Microchip products meet the specification contained in their particular Microchip Data Sheet.• Microchip believes that its family of products is one of the most secure families of its kind on the

market today, when used in the intended manner and under normal conditions.• There are dishonest and possibly illegal methods used to breach the code protection feature. All of

these methods, to our knowledge, require using the Microchip products in a manner outside theoperating specifications contained in Microchip’s Data Sheets. Most likely, the person doing so isengaged in theft of intellectual property.

• Microchip is willing to work with the customer who is concerned about the integrity of their code.• Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their

code. Code protection does not mean that we are guaranteeing the product as “unbreakable.”



http://www.microchip.com/http://www.microchip.com/pcnhttp://www.microchip.com/support

Code protection is constantly evolving. We at Microchip are committed to continuously improving thecode protection features of our products. Attempts to break Microchip’s code protection feature may be aviolation of the Digital Millennium Copyright Act. If such acts allow unauthorized access to your softwareor other copyrighted work, you may have a right to sue for relief under that Act.

Legal Notice

Information contained in this publication regarding device applications and the like is provided only foryour convenience and may be superseded by updates. It is your responsibility to ensure that yourapplication meets with your specifications. MICROCHIP MAKES NO REPRESENTATIONS ORWARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORYOR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITSCONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE.Microchip disclaims all liability arising from this information and its use. Use of Microchip devices in lifesupport and/or safety applications is entirely at the buyer’s risk, and the buyer agrees to defend,indemnify and hold harmless Microchip from any and all damages, claims, suits, or expenses resultingfrom such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectualproperty rights unless otherwise stated.

Trademarks

The Microchip name and logo, the Microchip logo, Adaptec, AnyRate, AVR, AVR logo, AVR Freaks,BesTime, BitCloud, chipKIT, chipKIT logo, CryptoMemory, CryptoRF, dsPIC, FlashFlex, flexPWR,HELDO, IGLOO, JukeBlox, KeeLoq, Kleer, LANCheck, LinkMD, maXStylus, maXTouch, MediaLB,megaAVR, Microsemi, Microsemi logo, MOST, MOST logo, MPLAB, OptoLyzer, PackeTime, PIC,picoPower, PICSTART, PIC32 logo, PolarFire, Prochip Designer, QTouch, SAM-BA, SenGenuity, SpyNIC,SST, SST Logo, SuperFlash, Symmetricom, SyncServer, Tachyon, TempTrackr, TimeSource, tinyAVR,UNI/O, Vectron, and XMEGA are registered trademarks of Microchip Technology Incorporated in theU.S.A. and other countries.

APT, ClockWorks, The Embedded Control Solutions Company, EtherSynch, FlashTec, Hyper SpeedControl, HyperLight Load, IntelliMOS, Libero, motorBench, mTouch, Powermite 3, Precision Edge,ProASIC, ProASIC Plus, ProASIC Plus logo, Quiet-Wire, SmartFusion, SyncWorld, Temux, TimeCesium,TimeHub, TimePictra, TimeProvider, Vite, WinPath, and ZL are registered trademarks of MicrochipTechnology Incorporated in the U.S.A.

Adjacent Key Suppression, AKS, Analog-for-the-Digital Age, Any Capacitor, AnyIn, AnyOut, BlueSky,BodyCom, CodeGuard, CryptoAuthentication, CryptoAutomotive, CryptoCompanion, CryptoController,dsPICDEM, dsPICDEM.net, Dynamic Average Matching, DAM, ECAN, EtherGREEN, In-Circuit SerialProgramming, ICSP, INICnet, Inter-Chip Connectivity, JitterBlocker, KleerNet, KleerNet logo, memBrain,Mindi, MiWi, MPASM, MPF, MPLAB Certified logo, MPLIB, MPLINK, MultiTRAK, NetDetach, OmniscientCode Generation, PICDEM, PICDEM.net, PICkit, PICtail, PowerSmart, PureSilicon, QMatrix, REAL ICE,Ripple Blocker, SAM-ICE, Serial Quad I/O, SMART-I.S., SQI, SuperSwitcher, SuperSwitcher II, TotalEndurance, TSHARC, USBCheck, VariSense, ViewSpan, WiperLock, Wireless DNA, and ZENA aretrademarks of Microchip Technology Incorporated in the U.S.A. and other countries.

SQTP is a service mark of Microchip Technology Incorporated in the U.S.A.

The Adaptec logo, Frequency on Demand, Silicon Storage Technology, and Symmcom are registeredtrademarks of Microchip Technology Inc. in other countries.



GestIC is a registered trademark of Microchip Technology Germany II GmbH & Co. KG, a subsidiary ofMicrochip Technology Inc., in other countries.

All other trademarks mentioned herein are property of their respective companies.© 2019, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved.

ISBN: 978-1-5224-4762-7

Quality Management System

For information regarding Microchip’s Quality Management Systems, please visit http://www.microchip.com/quality.



http://www.microchip.com/qualityhttp://www.microchip.com/quality

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PrefaceTable of Contents1. Introduction1.1. Features1.2. Kit Overview

2. Getting Started2.1. Curiosity Nano Quick Start2.2. Design Documentation and Relevant Links

3. Curiosity Nano3.1. On-board Debugger3.1.1. Virtual COM Port3.1.1.1. Overview3.1.1.2. Limitations3.1.1.3. Signaling3.1.1.4. Advanced Use

3.1.2. Mass Storage Disk3.1.2.1. Mass Storage Device3.1.2.2. Configuration Words

3.2. Curiosity Nano Standard Pinout3.3. Power Supply3.3.1. Target Regulator3.3.2. External Supply3.3.3. VBUS Output Pin

3.4. Target Current Measurement3.5. Disconnecting the On-Board Debugger

4. Hardware User Guide4.1. Connectors4.1.1. PIC16F15376 Curiosity Nano Pinout4.1.2. Using Pin Headers

4.2. Peripherals4.2.1. LED4.2.2. Mechanical Switch4.2.3. Crystal4.2.4. On-Board Debugger Implementation4.2.4.1. On-Board Debugger Connections

5. Hardware Revision History and Known Issues5.1. Identifying Product ID and Revision5.2. Revision 25.3. Revision 1

6. Document Revision History7. Appendix7.1. Schematic7.2. Assembly Drawing7.3. Curiosity Nano Base for Click boards™7.4. Connecting External Debuggers

The Microchip WebsiteProduct Change Notification ServiceCustomer SupportMicrochip Devices Code Protection FeatureLegal NoticeTrademarksQuality Management SystemWorldwide Sales and Service

pic16f15376 curiosity nano hardware user guide · 2019-11-21 · pic16f15376 curiosity nano...

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