FT232RL datasheet(30/40 Pages) FTDI

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FT232R USB UART IC Datasheet

Version 2.16

Document No.: FT_000053 Clearance No.: FTDI# 38

Internal EEPROM Configuration

Following a power-on reset or a USB reset the FT232R will scan its internal EEPROM and read the USB

configuration descriptors stored there. The default factory programmed values of the internal EEPROM

are shown in Table 8.1.

Parameter

Value

Notes

USB Vendor ID (VID)

0403h

FTDI default VID (hex)

USB Product UD (PID)

6001h

FTDI default PID (hex)

Serial Number Enabled?

Yes

Serial Number

See Note

A unique serial number is generated and

programmed into the EEPROM during device final

test.

Pull down I/O Pins in USB

Suspend

Disabled

Enabling this option will make the device pull down

on the UART interface lines when in USB suspend

mode (PWREN# is high).

Manufacturer Name

FTDI

Product Description

FT232R USB UART

Max Bus Power Current

90mA

Power Source

Bus Powered

Device Type

FT232R

USB Version

0200

Returns USB 2.0 device description to the host.

Note: The device is a USB 2.0 Full Speed device

(12Mb/s) as opposed to a USB 2.0 High Speed

device (480Mb/s).

Remote Wake Up

Enabled

Taking RI# low will wake up the USB host controller

from suspend in approximately 20 ms.

High Current I/Os

Disabled

Enables the high drive level on the UART and CBUS

I/O pins.

Load VCP Driver

Enabled

Makes the device load the VCP driver interface for

the device.

CBUS0

TXLED#

Default configuration of CBUS0 – Transmit LED

drive.

CBUS1

RXLED#

Default configuration of CBUS1 – Receive LED drive.

CBUS2

TXDEN

Default configuration of CBUS2 – Transmit data

enable for RS485

CBUS3

PWREN#

Default configuration of CBUS3 – Power enable. Low

after USB enumeration, high during USB suspend

mode.

CBUS4

SLEEP#

Default configuration of CBUS4 – Low during USB

suspend mode.

Invert TXD

Disabled

Signal on this pin becomes TXD# if enable.

Invert RXD

Disabled

Signal on this pin becomes RXD# if enable.

Invert RTS#

Disabled

Signal on this pin becomes RTS if enable.

Invert CTS#

Disabled

Signal on this pin becomes CTS if enable.

Invert DTR#

Disabled

Signal on this pin becomes DTR if enable.

Invert DSR#

Disabled

Signal on this pin becomes DSR if enable.

Invert DCD#

Disabled

Signal on this pin becomes DCD if enable.

Invert RI#

Disabled

Signal on this pin becomes RI if enable.

Table 8.1 Default Internal EEPROM Configuration

The internal EEPROM in the FT232R can be programmed over USB using the FTDI utility program

FT_PROG. FT_PROG can be downloaded from FTDI Utilities on the FTDI website (www.ftdichip.com).

Version 2.8a or later is required for the FT232R chip. Users who do not have their own USB Vendor ID

but who would like to use a unique Product ID in their design can apply to FTDI for a free block of unique

PIDs. Contact FTDI support for this service.

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