Evaluation Kit Hardware
SAM3U-EK Development Board User Guide
4-9
6478B–ATARM–05-Oct-09
The LCD module gets its reset from NRST. As explained previously, this NRST is shared with the JTAG
port and the push button BP1. The LCD chip select signal is connected to NCS2 (a dedicated jumper can
disable it, making NCS2 available for other custom usage).
The SAM3U4E communicates with the LCD through PIOB where a 16-bit parallel “8080-like” protocol
data bus has to be implemented by software.
Table 4-1.
LCD Module Pin Out
Pin
Symbol
Function
1
GND
Ground
2
CS
Chip Select
3
RS
Register select signal
4
WR
Write operation signal
5
RD
Read operation signal
6~21
DB0~DB15
Data bus
22~23
NC
No connection
24
RESET
Reset signal
25
GND
Ground
26
X+
Touch panel X_RIGHT
27
Y+
Touch panel Y_UP
28
X-
Touch panel X_LEFT
29
Y-
Touch panel Y_DOWN
30
GND
Ground
31
VDD1
Power supply for digital IO Pad
32
VDD2
Power supply for analog circuit
33~36
A1~A4
Power supply for backlight
37~38
NC
No connection
39
K
Backlight ground
