Table 2. 80-pin package pin description – ST & T UPSD3212C User Manual
Page 10
uPSD3212A, uPSD3212C, uPSD3212CV
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Table 2. 80-Pin Package Pin Description
Port Pin
Signal
Name
Pin No.
In/Out
Function
Basic
Alternate
AD0
36
I/O
External Bus
Multiplexed Address/Data bus A1/D1
AD1
37
I/O
Multiplexed Address/Data bus A0/D0
AD2
38
I/O
Multiplexed Address/Data bus A2/D2
AD3
39
I/O
Multiplexed Address/Data bus A3/D3
AD4
41
I/O
Multiplexed Address/Data bus A4/D4
AD5
43
I/O
Multiplexed Address/Data bus A5/D5
AD6
45
I/O
Multiplexed Address/Data bus A6/D6
AD7
47
I/O
Multiplexed Address/Data bus A7/D7
P1.0
T2
52
I/O
General I/O port pin
Timer 2 Count input
P1.1
TX2
54
I/O
General I/O port pin
Timer 2 Trigger input
P1.2
RxD1
56
I/O
General I/O port pin
2nd UART Receive
P1.3
TxD1
58
I/O
General I/O port pin
2nd UART Transmit
P1.4
ADC0
59
I/O
General I/O port pin
ADC Channel 0 input
P1.5
ADC1
60
I/O
General I/O port pin
ADC Channel 1 input
P1.6
ADC2
61
I/O
General I/O port pin
ADC Channel 2 input
P1.7
ADC3
64
I/O
General I/O port pin
ADC Channel 3 input
A8
51
O
External Bus, Address A8
A9
53
O
External Bus, Address A9
A10
55
O
External Bus, Address A10
A11
57
O
External Bus, Address A11
P3.0
RxD0
75
I/O
General I/O port pin
UART Receive
P3.1
TxD0
77
I/O
General I/O port pin
UART Transmit
P3.2
EXINT0
79
I/O
General I/O port pin
Interrupt 0 input / Timer 0 gate
control
P3.3
EXINT1
2
I/O
General I/O port pin
Interrupt 1 input / Timer 1 gate
control
P3.4
T0
40
I/O
General I/O port pin
Counter 0 input
P3.5
T1
42
I/O
General I/O port pin
Counter 1 input
P3.6
SDA1
44
I/O
General I/O port pin
I
2
C Bus serial data I/O
P3.7
SCL1
46
I/O
General I/O port pin
I
2
C Bus clock I/O
P4.0
33
I/O
General I/O port pin
P4.1
31
I/O
General I/O port pin
P4.2
30
I/O
General I/O port pin
P4.3
PWM0
27
I/O
General I/O port pin
8-bit Pulse Width Modulation
output 0