15
RM-AX4000
• IC Pin Function Description
MAIN BOARD IC1 uPD78F0547GC(T)-UBT-A (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
P120/REF_I
I
External Low Voltage detective signal input
2
P47/LCD_DB7
O
LCD data output
3
P46/LCD_DB6
O
LCD data output
4
P45/LCD_DB5
O
LCD data output
5
P44/LCD_DB4
O
LCD data output
6
P43/LCD_DB3
O
LCD data output
7
P42/LCD_DB2
O
LCD data output
8
P41/LCD_DB1
O
LCD data output
9
P40/LCD_DB0
O
LCD data output
10
RESET_I
I
Reset signal input
11
P124/OSC
O
Sub clock output (32.768kHz)
12
P123/OSC_I
I
Sub clock input (32.768kHz)
13
IC/FLMD0
—
FLASH writing signal
14
P122/OSC_O
O
Main clock output (20MHz)
15
P121/OSC_I
I
Main clock input (20MHz)
16
REGC
—
Not used
17
VSS
—
Ground terminal
18
EVSS
—
Ground terminal
19
VDD
—
Power Supply (+5V)
20
EVDD
—
Power Supply (+5V)
21
P60/SCL0
I
Connected to +5V
22
P61/SDA0
I
Connected to +5V
23
P62/EXSCL0
I
Connected to +5V
24
P63/KEYS_O
O
Key scan output
25
P33/INTP4
I
Connected to +5V
26
P64/KEYS_O
O
Key scan output
27
P65/KEYS_O
O
Key scan output
28
P66/KEYS_O
O
Key scan output
29
P67/KEYS_O
O
Key scan output
30
P77/KEYD_I
I
Key data input
31
P76/KEYD_I
I
Key data input
32
P75/KEYD_I
I
Key data input
33
P74/KEYD_I
I
Key data input
34
P73/KEYD_I
I
Key data input
35
P72/KEYD_I
I
Key data input
36
P71/KEYD_I
I
Key data input
37
P70/KEYD_I
I
Key data input
38
P06/TIO11/TO01
O
USB RESET signal output
39
P05/TIO00/SS111
I
Connected to +5V
40
P32/USB_SH_INT_I
I
USB interrupt signal input
41
P31/INTP2_I
I
TOUCH PANEL interrupt signal input
42
P50
I
Internal writing control signal input
43
P51
I
Connected to +5V
44
P52/PWEN_O
O
LED Back Light PWEN signal output
45
P53
I
Connected to +5V
46
P30/INTP1/VBUS_I
I
VBUS connecter select signal input
47
P17/PWM_0
O
LED Back Light PWM signal output
