Data Sheet

Copyright © Future Technology Devices International Limited 10
FT230X USB TO BASIC UART IC
Version 1.4
Document No.: FT_000566 Clearance No.: FTDI# 260
Pin No.
Name
Type
Description
1
TXD
Output
Transmit Asynchronous Data Output.
4
RXD
Input
Receiving Asynchronous Data Input.
2
RTS#
Output
Request to Send Control Output / Handshake Signal.
6
CTS#
Input
Clear To Send Control Input / Handshake Signal.
15
CBUS0
I/O
Configurable CBUS I/O Pin. Function of this pin is configured in the
device MTP memory. The default configuration is TXDEN. See CBUS
Signal Options, Table 3.7.
14
CBUS1
I/O
Configurable CBUS I/O Pin. Function of this pin is configured in the
device MTP memory. The default configuration is RXLED#. See CBUS
Signal Options, Table 3.7.
7
CBUS2
I/O
Configurable CBUS I/O Pin. Function of this pin is configured in the
device MTP memory. The default configuration is TXLED#. See CBUS
Signal Options, Table 3.7.
16
CBUS3
I/O
Configurable CBUS I/O Pin. Function of this pin is configured in the
device MTP memory. The default configuration is SLEEP#. See CBUS
Signal Options, Table 3.7.
Table 3.6 UART Interface and CBUS Group (see note 1)
Notes:
1. When used in Input Mode, the input pins are pulled to VCCIO via internal 75kΩ (approx) resistors.
These pins can be programmed to gently pull low during USB suspend (PWREN# = “1”) by setting an
option in the MTP memory.