UPSD3212C, UPSD3212CV
Table 2. 80-Pin Package Pin Description
Signal
Function
Port Pin
Pin No. In/Out
Name
Basic
Alternate
External Bus
P0.0
AD0
36
I/O
Multiplexed Address/Data bus A1/D1
Multiplexed Address/Data bus A0/D0
Multiplexed Address/Data bus A2/D2
Multiplexed Address/Data bus A3/D3
Multiplexed Address/Data bus A4/D4
Multiplexed Address/Data bus A5/D5
Multiplexed Address/Data bus A6/D6
Multiplexed Address/Data bus A7/D7
General I/O port pin
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
P2.0
P2.1
P2.2
P2.3
P3.0
P3.1
AD1
AD2
AD3
AD4
AD5
AD6
AD7
T2
37
38
39
41
43
45
47
52
54
56
58
59
60
61
64
51
53
55
57
75
77
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
Timer 2 Count input
Timer 2 Trigger input
2nd UART Receive
2nd UART Transmit
ADC Channel 0 input
ADC Channel 1 input
ADC Channel 2 input
ADC Channel 3 input
T2EX
RxD2
TxD2
ADC0
ADC1
ADC2
ADC3
A8
General I/O port pin
General I/O port pin
General I/O port pin
General I/O port pin
General I/O port pin
General I/O port pin
General I/O port pin
External Bus, Address A8
External Bus, Address A9
External Bus, Address A10
External Bus, Address A11
General I/O port pin
A9
O
A10
O
A11
O
RxD1
TxD1
I/O
I/O
UART Receive
UART Transmit
General I/O port pin
Interrupt 0 input / Timer 0 gate
control
P3.2
P3.3
INTO
INT1
79
2
I/O
I/O
General I/O port pin
General I/O port pin
Interrupt 1 input / Timer 1 gate
control
P3.4
P3.5
P3.6
T0
T1
40
42
44
I/O
I/O
I/O
General I/O port pin
General I/O port pin
General I/O port pin
Counter 0 input
Counter 1 input
2
SDA1
I C Bus serial data I/O
2
P3.7
P4.0
P4.1
P4.2
SCL1
46
33
31
30
I/O
I/O
I/O
I/O
General I/O port pin
General I/O port pin
General I/O port pin
General I/O port pin
I C Bus clock I/O
8-bit Pulse Width Modulation
output 0
P4.3
PWM0
27
I/O
General I/O port pin
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STMICROELECTRONICS [ ST ]
