MOD-MMA7260Q development board Users Manual

All boards produced by Olimex are ROHS compliant

Document revision B, October 2012Copyright(C) 2011, OLIMEX Ltd, All rights reserved

Page 1

INTRODUCTION

MOD-MMA7260Q is 3-axes accelerometer and measure the accelerations in X Y and Z axis with range +-1.5 g to 6 g.(software selectable sensitivity). Adding the ARM7 with USB interface and the serial flash memory open up possibilities to im-plement a lot of interesting projects with this small board. The original idea for this board was inspired by the movie Minority Report where Tom Cruise instead of mouse used his hands to interface with the computers from the future. Searching the net for more info on this subject we found similar project here. It looks not bad but the accelerometers used are 2 axis and the whole project was done too complex. Our goal was to make so small PCB which to be able to attach to your finger and with mini USB connector to be able to connect to any PC running Windows and to use it as 3d mouse i.e. moving your finger left - right-up-down to move your mouse cursor and if you move your finger toward the screen to make the mouse "click" ac-tion.This of course doesn't limit the applications of this board other cool application to be made is for instance car performance logger: as we have the acceleration and have microcontroller which can measure the time we can easily compute the velo-city V = A * t, then the distance S = V * t and as the accelerometer is 3-axis we can calculate at what distance in 3D space the object moves. If we know your car mass we can calculate the force applied F = m * A and from this we can calculate your real car power P = V * A, so having this little board inside your car and knowing your car mass you can have calculated in real time your car characteristics: Acceler-ation (0-100 kmh / 0-60mph), Braking distance, Horsepower, etc etc and remember these are the actual measurements on your car not catalog data. Yet another applica-tion is to measure the vibrations and shock on objects, for instance put one such device with battery power supply inside your parcel before send it by FedEx and then the recipient dump the info logged - what time it took, what velocity parcel had, did they drop it on the floor (i.e. at what max shock it was exposed), what time it was actually moved and with what speed, how many time it stayed rest i.e. it didn't moved and you can evaluate the different couriers efficiency this way?

BOARD FEATURES

• MMA7260Q 3-axis accelerometer from Freescale Semiconductor Inc. measure +-1.5 g - 6 g

• AT91SAM7S64 ARM7 microcontroller

• AT45DB011 1Mbit serial flash for data logging

• mini USB connector

• PCB: FR-4, 1.5 mm (0,062"), soldermask, white silkscreen component print

• Dimensions: 40x20 mm (1.57 x 0.78")

Page 2

ELECTROSTATIC WARNING

The MOD-MMA7260Q board is shipped in protective anti-static packaging. The board must not be subject to high electrostatic potentials. General practice for working with static sensitive devices should be applied when working with this board.

BOARD USE REQUIREMENTS

Cables: USB-Mini cable is need as this board used power supply from the USB.

PROCESSOR FEATURES

MOD-MMA7260Q board use ARM7TDMI® ARM® Thumb® Processor AT91SAM7S64 from Atmel Corporation with these features:

– Incorporates the ARM7TDMI® ARM® Thumb® Processor

- High-performance 32-bit RISC Architecture

- High-density 16-bit Instruction Set - Leader in MIPS/Watt

- Embedded ICE In-circuit Emulation, Debug Communication Channel Support

– 64 Kbytes of Internal High-speed Flash, Organized in 512 Pages of 128 Bytes

- Single Cycle Access at Up to 30 MHz in Worst Case Conditions, Prefetch Buffer Optimizing Thumb Instruction Execution at Maximum Speed

- Page Programming Time: 4 ms, Including Page Auto-erase, Full Erase Time: 10 ms

- 10,000 Write Cycles, 10-year Data Retention Capability, Sector Lock Capabilities, Flash Security Bit - Fast Flash Programming Interface for High Volume Production

– 16 Kbytes of Internal High-speed SRAM, Single-cycle Access at Maximum Speed

– Memory Controller (MC)

- Embedded Flash Controller, Abort Status and Misalignment Detection

– Reset Controller (RSTC)

- Based on Power-on Reset and Low-power Factory-calibrated Brownout Detector - Provides External Reset Signal Shaping and Reset Source Status

– Clock Generator (CKGR)

- Low-power RC Oscillator, 3 to 20 MHz On-chip Oscillator and one PLL

– Power Management Controller (PMC)

Page 3

- Software Power Optimization Capabilities, Including Slow Clock Mode (Down to 500 Hz) and Idle Mode - Three Programmable External Clock Signals

– Advanced Interrupt Controller (AIC)

- Individually Maskable, Eight-level Priority, Vectored Interrupt Sources - Two External Interrupt Sources and One Fast Interrupt Source, Spurious Interrupt Protected

– Debug Unit (DBGU)

- 2-wire UART and Support for Debug Communication Channel interrupt, Programmable ICE Access Prevention

– Periodic Interval Timer (PIT)

- 20-bit Programmable Counter plus 12-bit Interval Counter

– Windowed Watchdog (WDT)

- 12-bit key-protected Programmable Counter

- Provides Reset or Interrupt Signals to the System - Counter May Be Stopped While the Processor is in Debug State or in Idle Mode

– Real-time Timer (RTT)

- 32-bit Free-running Counter with Alarm - Runs Off the Internal RC Oscillator

– One Parallel Input/Output Controller (PIOA)

- Thirty-two Programmable I/O Lines Multiplexed with up to Two Peripheral I/Os - Input Change Interrupt Capability on Each I/O Line - Individually Programmable Open-drain, Pull-up resistor and Synchronous Output

– Eleven Peripheral DMA Controller (PDC) Channels

– One USB 2.0 Full Speed (12 Mbits per second) Device Port

- On-chip Transceiver, 328-byte Configurable Integrated FIFOs

– One Synchronous Serial Controller (SSC)

- Independent Clock and Frame Sync Signals for Each Receiver and Transmitter - I²S Analog Interface Support, Time Division Multiplex Support - High-speed Continuous Data Stream Capabilities with 32-bit Data Transfer

– Two Universal Synchronous/Asynchronous Receiver Transmitters (USART)

- Individual Baud Rate Generator, IrDA Infrared Modulation/Demodulation - Support for ISO7816 T0/T1 Smart Card, Hardware Handshaking, RS485 Support - Full Modem Line Support on USART1

Page 4

– One Master/Slave Serial Peripheral Interface (SPI)

- 8- to 16-bit Programmable Data Length, Four External Peripheral Chip Selects

– One Three-channel 16-bit Timer/Counter (TC)

- Three External Clock Inputs, Two Multi-purpose I/O Pins per Channel

- Double PWM Generation, Capture/Waveform Mode, Up/Down Capability

– One Four-channel 16-bit PWM Controller (PWMC)

– One Two-wire Interface (TWI)

- Master Mode Support Only, All Two-wire Atmel EEPROMs Supported

– One 8-channel 10-bit Analog-to-Digital Converter, Four Channels Multiplexed with Digital I/Os

– IEEE 1149.1 JTAG Boundary Scan on All Digital Pins

– 5V-tolerant I/Os, including Four High-current Drive I/O lines, Up to 16mA Each

– Power Supplies

- Embedded 1.8V Regulator, Drawing up to 100 mA for the Core and External Components - 3.3V VDDIO I/O Lines Power Supply, Independent 3.3V VDDFLASH Flash Power Supply - 1.8V VDDCORE Core Power Supply with Brownout Detector

– Fully Static Operation: Up to 55 MHz at 1.65V and 85°C Worst Case Conditions

Page 5

BLOCK DIAGRAM

Page 6

INTERNAL MEMORY MAP

Step by step programming instruction for OLIMEX MOD-MMA7260 board:

1) Install latest SAM-BA which can be downloaded from Atmel's web-site2) Solder TEST jumper3) Connected the module to mini USB cable4) Wait 10 seconds5) Disconnect the module from the mini USB cable6) Unsolder TEST jumper7) Connect the module to the mini USB cable again8) When asked for drivers point to the driver folder in SAM-BA installation directories9) Start SAM-BA10) Choose the correct settings - COM port from device manager and at91sam7s64 controller11) Click connect12) Load MOD_MMA.bin from already downloaded ZIP and program the board

There is good help file on how to install the the drivers located in the SAM-BA folder. More specifically it is located in the /doc subfolder.

If you need hex to bin converter software there are a lot of free tools available in the web. Choose the one that best suits your needs (depending on operating system, architecture, etc.)

Page 7

SCHEMATIC

Page 8

15p

15p

33p

100n

100n

100n

100n

100n

100n

100n

10uF

/16V

100n

47uF

/6.3

V

100n

100n

100n

100n

47uF

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V

100n

100n

1n

100n

2.2u

F

1nF

10p

10p

10nF

2.2u

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18.4

32M

Hz

1k1k

1k

27 27

1K

560

10K

1.5K

5.6k

/1%

(NA

)

1.8k

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(NA

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200(

NA

)

10K

1.5K

240/

1%

390/

1%

560

MM

A72

60Q

AT4

5DB

011

TL43

1CD

(NA

)

MC

P13

0T

3.3V

3.3V

3.3V

3.3V

3.3V

3.3V

3.3V

3.3V

3.3V

3.3V

LM11

17

#SM

#SM

CS

CS

G_S

EL1

G_S

EL1

G_S

EL2

G_S

EL2

MIS

O

MIS

O

MM

A_VC

C

MM

A_V

CC

MO

SI

MO

SI

RST

RS

T

SCK

SCK

STA

T

STAT

VC

CV

IN

VIN

X_O

UT

X_O

UT

Y_O

UT

Y_O

UT

Z_O

UT

Z_O

UT

BU

T

C1

C2

C3

C4

C5

C6

C7

C8

C9C

10

C11

C12

C13

C14

C15

C16

C17

C18

C21

C22

C23

C24

C25

C26

C27

C28

C29

C30

1

2

3LM/TL

PW

R

Q1

R1

R2

R3

R4 R5

R6

R7

R8

R9

R10

R11

R12

R13

R15

R20

R21

R25

RX

D0

STA

T

12

TEST

TXD

0

AD

43

AD

54

AD

65

AD

76

AD

VR

EF

1

DD

M56

DD

P57

ER

AS

E55

GN

D1

2

GN

D2

17

GN

D3

46

GN

D4

60

JTA

GS

EL

50

NR

ST

39P

A0/

PW

M0/

TIO

A0

48

PA

1/P

WM

1/TI

OB

047

PA

2/P

WM

2/S

CK

044

PA

3/TW

D/N

PC

S3

43

PA

4/TW

CK

/TC

LK0

36

PA

5/R

XD

0/N

PC

S3

35

PA

6/TX

D0/

PC

K0

34

PA

7/R

TS0/

PW

M3

32

PA

8/C

TS0/

AD

TRG

31

PA

9/D

RX

D/N

PC

S1

30

PA

10/D

TXD

/NP

CS

229

PA

11/N

PC

S0/

PW

M0

28

PA

12/M

ISO

/PW

M1

27

PA

13/M

OS

I/PW

M2

22

PA

14/S

PC

K/P

WM

321

PA

15/T

F/TI

OA

120

PA

16/T

K/T

IOB

119

PA

17/T

D/P

CK

1/A

D0

9

PA

18/R

D/P

CK

2/A

D1

10

PA

19/R

K/F

IQ/A

D2

13

PA

20/R

F/IR

Q0/

AD

316

PA

21/R

XD

1/P

CK

111

PA

22/T

XD

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PC

S3

14

PA

23/S

CK

1/P

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015

PA

24/R

TS1/

PW

M1

23

PA

25/C

TS1/

PW

M2

25

PA

26/D

CD

1/TI

OA

226

PA

27/D

TR1/

TIO

B2

37

PA

28/D

SR

1/TC

LK1

38

PA

29/R

I1/T

CLK

241

PA

30/IR

Q1/

NP

CS

242

PA

31/N

PC

S1/

PC

K2

52

PLL

RC

63

TCK

53

TDI

33

TDO

49

TMS

51

TST

40

VD

DC

OR

E1

12

VD

DC

OR

E2

24

VD

DC

OR

E3

54

VD

DFL

AS

H59

VD

DIN

7

VD

DIO

118

VD

DIO

245

VD

DIO

358

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8

VD

DP

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62

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61

U1

AT9

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NC

15

NC

26

NC

37

NC

48

NC

59

NC

610

NC

711

NC

816

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D3

VS

S4

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UT

15

YO

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14

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T13

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USB

BOARD LAYOUT

POWER SUPPLY CIRCUIT

MOD-MMA7260Q is power supplied +5V (VIN) from USB.

RESET CIRCUITMOD-MMA7260Q reset circuit includes U5 (MCP130T), R8(10k) and AT91SAM7S64 pin 39 (NRST).

Page 9

CLOCK CIRCUIT

Quartz crystal 18.432 MHz is connected to AT91SAM7S64 pin 61 (XOUT) and pin 62 (XIN).

JUMPER DESCRIPTION

TESTThis jumper, when closed, connects AT91SAM7S64 pin 40 (TST) to 3.3V.Default state is open ed.

LM/TLWhen LM is shorted, AT91SAM7S64 pin 1 (ADVREF (MMA_VCC)) is connected to3.3V. When TL is shorted, AT91SAM7S64 pin 1 (ADVREF (MMA_VCC)) is connected toVIN.Default state is LM shorted .

INPUT/OUTPUT

Status Led (green) connected to AT91SAM7S64 pin 52 (PA31/NPCS1/PCK2).

Power-on LED (red) – this LED shows that +3.3V is applied to the board.

User button with name BUT connected to AT91SAM7S64 pin 16 (PA20/RF/IRQ0/AD3).

EXTERNAL CONNECTORS DESCRIPTION

USB connector

Pin # Signal Name

1 VIN

2 DDM

3 DDP

4 NC

5 GND

Page 10

AVAILABLE DEMO SOFTWARE

– 3D mouse example

Page 11

ORDER CODEMOD-MMA7260 - assembled and tested board

How to order?

You can pruchase directly from our web site or by any of our distributors.Check our web www.olimex.com/dev for more info.

Revision history

Board - Revision B, October 2006

User manual - Revision A, February 2011 - Step by step programming instruction for OLIMEX MOD-MMA7260 board – modified

User manual - Revision B, October 2012 - Step by step programming instructions for OLIMEX MOD-MMA7260 board – modified; couple of links updated

Page 12

© 2012 Olimex Ltd. Olimex®, logo and combinations thereof, are registered trademarks of Olimex Ltd. Other product names may be trademarks of others and the rights belong to their respective owners.

The information in this document is provided in connection with Olimex products. No license, express or implied or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Olimex products.

It is possible that the pictures in this manual differ from the latest revision of the board.

The product described in this document is subject to continuous development and improvements. All particulars of the product and its use contained in this document are given by OLIMEX in good faith. However all warranties implied or expressed including but not limited to implied warranties of merchantability or fitness for purpose are excluded. This document is intended only to assist the reader in the use of the product. OLIMEX Ltd. shall not be liable for any loss or damage arising from the use of any information in this document or any error or omission in such information or any incorrect use of the product.

This evaluation board/kit is intended for use for engineering development, demonstration, or evaluation purposes only and is not considered by OLIMEX to be a finished end-product fit for general consumer use. Persons handling the product must have electronics training and observe good engineering practice standards. As such, the goods being provided are not intended to be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including product safety and environmental measures typically found in end products that incorporate such semiconductor components or circuit boards.

Olimex currently deals with a variety of customers for products, and therefore our arrangement with the user is not exclusive. Olimex assumes no liability for applications assistance, customer product design, software performance, or infringement of patents or services described herein.

THERE IS NO WARRANTY FOR THE DESIGN MATERIALS AND THE COMPONENTS USED TO CREATE MOD-MMA7260. THEY ARE CONSIDERED SUITABLE ONLY FOR MOD-MMA7260.

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