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参数资料
| 型号： | UM232R |
| 厂商： | FTDI, Future Technology Devices International Ltd |
| 文件页数： | 9/28页 |
| 文件大小： | 0K |
| 描述： | MOD USB UART DEV FT232R |
| 产品培训模块： | USB Introduction USB-UART Interface Solutions |
| 产品目录绘图： | UM232R |
| 标准包装： | 5 |
| 主要目的： | 接口，USB 2.0 至 UART（RS232）电桥 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | FT232R |
| 主要属性： | 全速，300 ~ 3 MB 速率，安全识别号 |
| 次要属性： | 6 ~ 48MHz 时钟发生器输出，免版税驱动器 |
| 已供物品： | 板 |
| 产品目录页面： | 633 (CN2011-ZH PDF) |
| 相关产品： | 768-1008-6-ND - IC USB FS SERIAL UART 32-QFN 768-1007-6-ND - IC USB FS SERIAL UART 28-SSOP 768-1008-1-ND - IC USB FS SERIAL UART 32-QFN 768-1007-1-ND - IC USB FS SERIAL UART 28-SSOP 768-1008-2-ND - IC USB FS SERIAL UART 32-QFN 768-1007-2-ND - IC USB FS SERIAL UART 28-SSOP |
| 其它名称： | 768-1019 |
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Document Reference No.: FT_000051
UM232R USB - Serial UART Development Module
Datasheet Version 1.1
Clearance No.: FTDI# 125
4.2 Signal Descriptions
Pin No.
1
2
3
Name
TXD
DTR#
RTS#
Type
Output
Output
Output
Description
Transmit Asynchronous Data Output.*
Data Terminal Ready Control Output / Handshake Signal.*
Request to Send Control Output / Handshake Signal.*
+1.8V to +5.25V supply to the UART Interface and CBUS I/O pins (1...3, 5, 6, 9...14,
22, 23).
4
VIO
PWR
In USB bus powered designs connect to 3V3 to drive out at 3.3V levels (connect jumper
J1 pins 1 and 2 together), or connect to VCC to drive out at 5V CMOS level (connect
jumper J1 pins 2 and 3 together). This pin can also be supplied with an external 1.8V –
2.8V supply in order to drive out at lower levels. It should be noted that in this case
this supply should originate from the same source as the supply to VCC. This means
that in bus powered designs a regulator which is supplied by the 5V on the USB bus
should be used.
5
6
7, 24
8
9
10
11
12
13
14
15, 21
RXD
RI#
GND
DSR#
DCD#
CTS#
CB4
CB2
SLD
USB
VCC
Input
Input
PWR
Input
Input
Input
I/O
I/O
GND
Output
PWR or
Output
Receiving Asynchronous Data Input.*
Ring Indicator Control Input. When remote wake up is enabled in the internal EEPROM
taking RI# low >20ms can be used to resume the PC USB host controller from
suspend.*
Module Ground Supply Pins
Data Set Ready Control Input / Handshake Signal.*
Data Carrier Detect Control Input.
Clear To Send Control Input / Handshake Signal.*
Configurable CBUS I/O Pin. Function of this pin is configured in the device internal
EEPROM. Factory Default pin function is SLEEP#. See CBUS Signal Options, Table 4.4.*
Configurable CBUS I/O Pin. Function of this pin is configured in the device internal
EEPROM. Factory Default pin function is TXDEN. See CBUS Signal Options,Table 4.4.*
USB Cable Shield.
5V Power output USB port. For a low power USB bus powered design, up to 100mA can
be sourced from the 5V supply on the USB bus. A maximum of 500mA can be sourced
from the USB bus in a high power USB bus powered design.
These two pins are internally connected on the module PCB. To power the module from
the 5V supply on USB bus connects jumper J2 pins 1 and 2 together (this is the module
default configuration). In this case these pins would have the same description as pin
14.
To use the UM232R module in a self powered configuration ensure that jumper J2 pins
1 and 2 are not connected together, and apply an external 4.0V to 5.25V supply to one
of these pins.
17
16
18
19
PU1
PU2
CB3
3V3
Control
Control
I/O
Output
Pull up resistor pin connection 2. Connect to pin 20 (RST#) in a self powered
configuration.
Pull up resistor pin connection 1. Connect to pin 14 (USB) in a self powered
configuration.
Configurable CBUS I/O Pin. Function of this pin is configured in the device internal
EEPROM. Factory Default pin Function is PWREN#. See CBUS Signal Options, Table
4.4.*
3.3V output from integrated L.D.O. regulator. This pin is decoupled to ground on the
module pcb with a 10nF capacitor. The prime purpose of this pin is to provide the
internal 3.3V supply to the USB transceiver cell and the internal 1.5kΩ pull up resistor
on USBDP. Up to 50mA can be drawn from this pin to power external logic if required.
This pin can also be used to supply the FT232RL?s VCCIO pin by connec ting this pin to
pin 4 (VIO), or by connecting together pins 1 and 2 on jumper J1.
? Copyright 2005-2011 Future Technology Devices International Ltd
8
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