Owner : SAYD Cypress Confidential Sales Training 2/21/2013 1

FTDI FT232R vs. USB Serial CY7C65213 USB - UART Converter Cable

USB to UART Conversion at Low Power

CYPRESS INTERNAL USE ONLY

Owner : SAYD Cypress Confidential Sales Training 2/21/2012 2

FT232R Overview

FT232R is a USB to UART interface withData transfer rates of 3Mbaud at TTL levels

Operating supply current in normal node of 15mA

Operating supply current in suspend mode of 70µA

UART interface support for 7-8 bits and 1-2 stop bits

128 bytes RX buffer and 256 bytes TX buffer

Operating voltages from 3.3V to 5.5V

Fully integrated 1Kb EEPROM to store device descriptors and CBUS I/O configuration

FT232R finds application inUSB to UART(RS232,RS422,RS485) converters

USB upgradation of legacy peripherals

PDA (Personal Digital Assistant) to USB data transfer

USB smart card readers

FTDI FT232R is one of the most widely used solutions for USB to UART

conversion for the last decade

FT232R

CYPRESS INTERNAL USE ONLY

Owner : SAYD Cypress Confidential Sales Training 2/21/2012 3

Challenges Using FTDI FT232R

CY7C65213 solves these problemsRX buffer of 256 bytes allows for high data transfer rates with minimal data loss

Industry’s lowest suspend mode current of 5µA consumes the least power

CY7C65213 is a reliable, low power solution for USB to UART converters

A USB to DB9 serial converter cable has low suspend current requirements

USB to UART converter cables

1. Low FIFO receive (RX) buffer memory leads to unreliable data transferTransmission rates of a CPU is higher than the receiving rate of the device , hence the device needs RX buffers

High transmission rates require RX buffers of high memory size to prevent loss of data

FT232R has a low RX buffer size of only 128 bytes

2. High suspend current leads to high power consumption USB to UART cable remains in suspend mode when not transferring data

Suspend mode current should be as low as possible to save power

FT232R has a high suspend mode current of 70µA

CYPRESS INTERNAL USE ONLY

Owner : SAYD Cypress Confidential Sales Training 2/21/2012 4

FT232R vs. CY7C65213

Feature FT232R CY7C65213

Data Transfer Rates (baud) 300 to 3M 183 to 3M

FIFO RX/TX Buffer (bytes) 128/256 256/256

Supply Current (mA) 15 20

Suspend Current (µA) 70 5

Operating Supply Voltage VCC (min, max ) 4V-5.25V 3.15V-5.5V

Internal Oscillator (MHz) 12 0.32, 48

Flow Control (RTS/CTS) Yes Yes

Battery Charge Detect No Yes

GPIO Pins 8 8

Device Package 32QFN, 28TSSOP 32QFN*

The indicated parameters are in the perceived order of importance

(*) Cypress offers CY7C64225, a 28 TSSOP USB to UART converter

CYPRESS INTERNAL USE ONLY

Owner : SAYD Cypress Confidential Sales Training 2/21/2012 5

Customer Objections to AdoptingCY7C65213 over FT232R“We are used to designing with FTDI’s FT232R”CY7C65213 is pin compatible with FT232R

Cypress can offer price competitive solutions

Cypress offers enhanced versions of USB-Serial products with Battery Charge Detect and CapSense features

CYPRESS INTERNAL USE ONLY

Owner : SAYD Cypress Confidential Sales Training 2/21/2012 6

CY7C65213 Design Win Example-USB to UART Converter Cable

Design Challenges

Minimize power consumptionMinimize data loss during high speed transmission

CY SolutionIndustry’s lowest suspend current of 5µA offers low power

consumptionRX and TX buffers of 256 bytes each minimize data loss

CY7C65213 Value

Competition

Block Diagram

UART Device

Suggested Collateral

Datasheet: CY7C65213 (Q2 2013)

Reference Design Kits: CYUSBS232 ( Q2 2013)

Development Kits: CYUSBS234, CYUSBS236 (Q2 2013)

FTDI FT232RSilabs CP2101Microchip MCP2200

USB to UART RS232 converter cableConvert DB9 UART RS232 to USB 2.0 Serial

UART

General Purpose

I/Os

Reset

CPU and Memory

48 MHz Osc

VoltageRegulator

32 KHz Osc

USB Controller

Cypress USB to UART One-Chip Solution