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PDF UM232R Data sheet ( Hoja de datos )
| Número de pieza | UM232R | |
| Descripción | USB - Serial UART Development Module | |
| Fabricantes | FTDI | |
| Logotipo |  |
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Future Technology Devices
International Ltd
UM232R USB - Serial UART
Development Module
Datasheet
Document Reference No.: FT_000051
Version 1.1
Issue Date: 2011-11-25
Future Technology Devices International Ltd (FTDI)
Unit 1, 2 Seaward Place, Centurion Business Park, Glasgow, G41 1HH, United Kingdom
Tel: +44 (0) 141 429 2777, Fax: +44 (0) 141 429 2758
Neither the whole nor any part of the information contained in, or the product described in this manual, may be adapted or reproduced in
any material or electronic form without the prior written consent of the copyright holder. This product and its documentation are supplied
on an as-is basis and no warranty as to their suitability for any particular purpose is either made or implied. Future Technology Devices
International Ltd will not accept any claim for damages howsoever arising as a result of use or failure of this product. Your statutory rights
are not affected. This product or any variant of it is not intended for use in any medical appliance, device or system in which the failure of
the product might reasonably be expected to result in personal injury. This document provides preliminary information that ma y be
subject to change without notice. No freedom to use patents or other intellectual property rights is implied by the publication of this
document. Future Technology Devices International Ltd, Unit 1, 2 Seaward Place, Centurion Business Park, Glasgow, G41 1HH, Un ited
Kingdom. Scotland Registered Number: SC136640
© Copyright 2005-2011 Future Technology Devices International Ltd
1 page  
2.2 Features
The UM232R has the following features:
Single chip USB to UART synchronous serial
data transfer interface
Entire USB protocol handled on the chip –
No USB-specific firmware programming
required.
UART interface support for 7 or 8 data bits,
1 or 2 stop bits and odd / even / mark /
space / no parity.
Fully assisted hardware or X-On / X-Off
software handshaking.
Data transfer rates from 300 baud to 3
Megabaud (RS422 / RS485 and at TTL
levels) and 300 baud to 1 Megabaud
(RS232).
FTDI‟s royalty-free VCP and D2XX drivers
eliminate the requirement for USB driver
development in most cases.
In-built support for event characters and
line break condition.
USB FTDIChip-ID™ feature.
Configurable CBUS I/O pins.
Auto transmit buffer control for RS485
applications.
Transmit and receive LED drive signals.
New 48MHz, 24MHz, 12MHz, and 6MHz
clock output signal Options for driving
external MCU or FPGA.
Receive and transmit buffers for high data
throughput.
Adjustable receive buffer timeout.
Synchronous and asynchronous bit bang
mode interface options with RD# and WR#
strobes.
New CBUS bit bang mode option.
Support for USB suspend and resume.
Integrated 1024 bit internal EEPROM for
storing USB VID, PID, serial number and
product description strings, and CBUS I/O
configuration.
Device supplied preprogrammed with
unique USB serial number.
Support for bus powered, self powered,
and high-power bus powered USB
configurations.
Document Reference No.: FT_000051
UM232R USB - Serial UART Development Module
Datasheet Version 1.1
Clearance No.: FTDI# 125
On board jumper allows for selection of USB
bus powered supply or self powered
supply.Integrated 3.3V level converter for
USB I/O.
Integrated level converter on UART and
CBUS for interfacing to 5V – 1.8V Logic.
On board jumper allows for selection of
UART and CBUS interface IO voltage.
True 5V / 3.3V / 2.8V / 1.8V CMOS drive
output and TTL input.
High I/O pin output drive option.
Integrated USB resistors.
Integrated power-on-reset circuit.
Fully integrated clock – no external crystal,
oscillator, or resonator required.
Fully integrated AVCC supply filtering – No
separate AVCC pin and no external R-C
filter required.
UART signal inversion option.
USB bulk transfer mode.
+4.0V to +5.25V Single Supply Operation.
Low operating and USB suspend current.
Low USB bandwidth consumption.
UHCI / OHCI / EHCI host controller
compatible
USB 2.0 Full Speed compatible.
-40°C to 85°C extended operating
temperature range.
Supplied in PCB designed to fit a standard
15.0mm (0.6”) wide 24 pin DIP socket.
Pins are on a 2.60mm (0.1”) pitch.
On board USB „B‟ socket allows module to
be connected to a PC via a standard A to B
USB cable.
© Copyright 2005-2011 Future Technology Devices International Ltd
4
5 Page 
Document Reference No.: FT_000051
UM232R USB - Serial UART Development Module
Datasheet Version 1.1
Clearance No.: FTDI# 125
4.4 CBUS Signal Options
The following options can be configured on the CBUS I/O pins. These options are all configured in the
internal EEPROM using the utility software FT_PROG, which can be downloaded from the www.ftdichip.com.
The default configuration is described in Section 9.
CBUS Signal
Option
TXDEN#
PWREN#
TXLED#
RXLED#
TX&RXLED#
SLEEP#
CLK48
CLK24
CLK12
CLK6
Available On CBUS Pin
CBUS0, CBUS1, CBUS2, CBUS3,
CBUS4
CBUS0, CBUS1, CBUS2, CBUS3,
CBUS4
CBUS0, CBUS1, CBUS2, CBUS3,
CBUS4
CBUS0, CBUS1, CBUS2, CBUS3,
CBUS4
CBUS0, CBUS1, CBUS2, CBUS3,
CBUS4
CBUS0, CBUS1, CBUS2, CBUS3,
CBUS4
CBUS0, CBUS1, CBUS2, CBUS3,
CBUS4
CBUS0, CBUS1, CBUS2, CBUS3,
CBUS4
CBUS0, CBUS1, CBUS2, CBUS3,
CBUS4
CBUS0, CBUS1, CBUS2, CBUS3,
CBUS4
CbitBangI/O
CBUS0, CBUS1, CBUS2, CBUS3
BitBangWRn
CBUS0, CBUS1, CBUS2, CBUS3
BitBangRDn
CBUS0, CBUS1, CBUS2, CBUS3
Table 4.4 CBUS Signal Options
Description
Enable transmit data for RS485
Goes low after the device is configured by USB, then high
during USB suspend. Can be used to control power to
external logic in high power designs. Needs 10k pull up to
VCC.
Transmit data LED drive – pulses low when transmitting
data via USB.
Receive data LED drive – pulses low when receiving data
via USB.
LED drive – pulses low when transmitting or receiving
data via USB. See
Goes low during USB suspend mode. Typically used to
power down an external TTL to RS232 level converter I.C.
in USB to RS232 converter designs.
48MHz Clock output.
24 MHz Clock output.
12 MHz Clock output.
6 MHz Clock output.
CBUS bit bang mode option. Allows up to 4 of the CBUS
pins to be used as general purpose I/O. Configured
individually for CBUS0, CBUS1, CBUS2 and CBUS3 in the
internal EEPROM. A separate application note will describe
in more detail how to use CBUS bit bang mode.
(www.ftdichip.com)
Synchronous and asynchronous bit bang mode WR#
strobe Output.
Synchronous and asynchronous bit bang mode RD#
strobe Output.
© Copyright 2005-2011 Future Technology Devices International Ltd
10
11 Page | ||
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| PDF Descargar | [ Datasheet UM232R.PDF ] | |
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