Connectors
DB9 male connector UART1 (P35)
Pin No.
Symbol
2 RxD
3 TxD
5 GND
7 RTS
8 CTS
The serial port is configured as a standard RS232 interface with RTS/CTS control. Cross female to female cable
is needed for connection with PC computer COM port.
16-pin LCD connector (P21)
Top View
Pin Assignment for Crystal Clear technology CMC216x04 or EDT EW162B0GLY LCD
Pin No.
Symbol
Function
1 GND
Ground
Terminal
2 Vdd
Supply
Terminal
3
Vo
Power Supply for LCD Driver
4
RS
Register Select Signal
5 R/W
Read/Write
Selection
6 E
Enable
Signal
7
DB0
Data Bus Line (Not used)
8
DB1
Data Bus Line (Not used)
9
DB2
Data Bus Line (Not used)
10
DB3
Data Bus Line (Not used)
11
DB4
Data Bus Line
12
DB5
Data Bus Line
13
DB6
Data Bus Line
14
DB7
Data Bus Line
15
BL+
LED Backlight Power Supply
16
BL-
LED Backlight Ground
Verify polarity of LED backlight on your LCD display!
©
iSYSTEM, March 2007
7/13