ViewSonic VX712 - Page 21

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ViewSonic Corporation
Confidential - Do Not Copy VX712
PIN Function
Pin No.
Name
PLCC QFP
Description
NC 1 39 No connection
DA0/P5.0 2 40 PWM DAC output/General purpose I/O (open drain)
DA1/P5.1 3 41 PWM DAC output/General purpose I/O (open drain)
DA2/P5.2 4 42 PWM DAC output/General purpose I/O (open drain)
DA3/P5.3 5 43 PWM DAC output/General purpose I/O (open drain)
DA4/ P5.4 6 44 PWM DAC output/General purpose I/O (open drain)
DA5/P5.5 7 1 PWM DAC output/General purpose I/O (open drain)
P5.6/HSCL2 8 2 General purpose I/O/Slave IIC1 SCL2 (open drain)
P5.7/HSDA2 9 3
General purpose Output/Slave IIC1 SDA2 (open
drain)
RST 10 4 High Active RESET
HSCL1/P3.0/RXD 11 5
Slave IIC clock/General purpose I/O/Rxd (open
drain)
HSDA1/P3.1/TXD 13 7 Slave IIC data/General purpose I/O/Txd (open drain)
CN 12 6 No connection
P3.2/INT0 14 8
General purpose I/O/External interrupt 0 (Standard
8051)
P3.3/INT1 15 9
General purpose I/O/External interrupt 1 (Standard
8051)
P3.4/T0 16 10
General purpose I/O/T0 Ext. Counter/Timer 0
(Standard 8051)
P3.5/T1 17 11
General purpose I/O/T1 Ext. Counter/Timer 1
(Standard 8051)
P7.6/CLKO2 18 12 General purpose I/O /Clock out 2 (CMOS)
P7.7 19 13 General purpose I/O (CMOS)
X2 20 14 Crystal Out
X1 21 15 Crystal In
VSS 22 16 Ground
NC 23 17 No connection
P6.0/AD0 24 18
General purpose I/O (CMOS) /6-bit ADC channel 0
input
P6.1/AD1 25 19
General purpose I/O (CMOS) /6-bit ADC channel 1
input
P6.2/AD2 26 20
General purpose I/O (CMOS) /6-bit ADC channel 2
input
P6.3/AD3 27 21
General purpose I/O (CMOS) /6-bit ADC channel 3
input
P6.4 28 22 General purpose I/O (CMOS)
P6.5 29 23 General purpose I/O (CMOS)
P6.6/CLKO1 30 24 General purpose I/O/CLKO1 (CMOS)
P6.7 31 25 General purpose I/O (CMOS)
VSYNC 32 26 VSYNC input