This is a USB-to-Serial module that uses an FTDI FT4232L chip to convert a USB Host signal to four TTL serial ports. Each is a five-wire serial port.
The serial ports are broken out to 2×5-pin headers with 0.1" (2.54mm) spacing, making them easy to work with for prototyping, and also compatible with FC10P ribbon cables.
The pinouts of the serial ports are as follows:
Pin | J4 | J2 | J3 | J5 | Description |
1 |
NC |
NC |
NC |
NC |
Not connected |
2 |
RXD0 |
RXD1 |
RXD2 |
RXD3 |
UART serial data in |
3 |
TXD0 |
TXD1 |
TXD2 |
TXD3 |
UART serial data out |
4 |
NC |
NC |
NC |
NC |
Not connected |
5 |
GND |
GND |
GND |
GND |
GND |
6 |
NC |
NC |
NC |
NC |
Not connected |
7 |
DEN0 |
DEN1 |
DEN2 |
DEN3 |
UART request to send |
8 |
CTS |
CTS |
CTS |
CTS |
UART clear to send |
9 |
VDD5 |
VDD5 |
VDD5 |
VDD5 |
5V |
10 |
VDD33 |
VDD33 |
VDD33 |
VDD33 |
VDD 3.3V |
As well as from the mini-USB connector, the USB signals can be brought in through the SIP connector behind it. The pins have 2.54mm pitch and are in the order VDD5V, USB+, USB-, GND.
|