Document Reference No.: FT_000065
TTL-232R-PCB TTL TO USB SERIAL CONVERTER PCB Datasheet Version 1.01
Clearance No.: FTDI# 54
5
TTL-232R-PCB Circuit Schematic
The circuit schematic of the TTL-232R-PCB, utilising the FTDI FT232R, is shown in Figure 5.1
PULL UP RESISTORS
NOT FITTED
INTERNAL IO VOLTAGE SELECTION
VCC-IO
USB “A” PLUG
Figure 5.1 Circuit Schematic of TTL-232R-PCB.
GND
Copyright © 2008 Future Technology Devices International Limited
5
1
4
47pF x 2
14
4
17
20
24
26
32
8
CTS#
2
RXD
3
USB-DP
15
2
USB-DM
10nF
18
RTS#
CTS#
RXD
TXD
VCC-3V3
4.7uF +
100nF
VCCIO
VCC
FB
1
19
VCC-IO
VCC
FT232RQ
16
30
270R
RTS#
270R
TXD
100nF
VCC-3V3
11