Datasheet

Page 18
6. USB-UART
C5
100nF
C6
100nF
E3
10uF
VCC VCC-FTDI
VCC-FTDI
C7
100nF
VCC-USB
USBDM
USBDP
C8
100nF
VCC
VCC VCC
RX-LED
TX-LED
PD0
PD1
RX-MCU
TX-MCU
VCC-FTDI
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
TXD
DTR#
RTS#
VCCIO
RXD
RI#
GND
NC
DSR#
DCD#
CTS#
CBUS4
CBUS2
CBUS3
CBUS0
CBUS1
OSCO
OSCI
TEST
AGND
NC
GND
GND
VCC
RESET#
3V3OUT
USBDM
USBDP
FT232RL
U5
D1
MBRS140T3
FP1
FERRITE
VCC
LD2A LD3B
R3
2K2
R4
2K2
RX TX
1
2
3
4
VCC
GND
D-
D+
CN9
USB B
1 2
J2
1 2
J3
USBDM
USBDP
DATA BUS
Figure 6-2:
USB cable connected
Figure 6-1:
USB-UART module
schematics
Fast on-board FTDI chip allows you to communicate with a PC or other UART devices using USB-UART
connection. Female USB Type-B connector (CN9) is used for connecting the USB cable. RX and TX
LEDs will indicate communication status. Before connecting the board with the PC, make sure to
have the appropriate FTDI drivers installed on your operating system. Drivers can be found
at following URL: http://www.ftdichip.com/Drivers/VCP.htm