UMFT234XF Datasheet, PDF (4/13 Pages) Future Technology Devices International Ltd. – UMFT234XF Development Module

UMFT234XF Datasheet
Version 1.0
Document Reference No.: FT_000818 Clearance No.: FTDI# 337
3 UMFT234XF Signals and Configurations
USB connectivity is via CN1 a micro-B USB connector. The UART and CBUS signals are available on PCB
pads.
3.1 UMFT234XF CN1 Signal Descriptions
Pin No. Name Type
Description
5V Power input to USB port, for a USB bus low-powered design; up to 100mA may be
1
VBUS
PWR sourced from the 5V supply on the USB bus. A maximum of 500mA can be sourced
from the USB bus in a USB bus high-powered design.
2
D-
Signal Negative USB data signal
3
D+
Signal Positive USB data signal
4
ID
Signal Not Connected
5
GND
PWR Module Ground
Table 1 USB Connector Pin Out Description
3.2 UMFT234XF PAD Signal Descriptions
Pad
No.
Name
Type
Description
P1
RESET# Signal Active low input may be used to reset the FT234XD IC
3V3OUT from FT234XD. May be used for external logic. (50mA max)
P2
3V3
PWR
Also powers the FT234XD VCCIO (if JP1 fitted (default)
Optional input to supply the FT234XD VCCIO from an external supply. VIO may be
P3
VIO
PWR ^{between 1.8V to 3.3V.}
JP1 must be disconnected to use this input.
P4
GND
PWR Module GND
P5
VBUS
PWR 5V output supplied from the USB port.
P6
CB0
Signal
Configurable Bus pin 0. Available settings for the pin are defined in table 3. The
default is PWREN#
P7
TXD
Signal UART data output signal
P8
RTS#
Signal UART Ready to Send output signal. Active low.
P9
RXD
Signal UART data input signal
P10
CTS#
Signal UART Clear to Send input signal. Active low.
Table 2 USB Connector Pin Out Description
3.3 UMFT234XF J-1
J-1 is used to connect/disconnect the 3V3OUT frm the FT234XD IC to the VCCIO input pin. By default it is
connected.
4
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