ST & T UPSD3212C User Manual
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uPSD3212A, uPSD3212C, uPSD3212CV
P4.4
PWM1
25
I/O
General I/O port pin
8-bit Pulse Width Modulation
output 1
P4.5
PWM2
23
I/O
General I/O port pin
8-bit Pulse Width Modulation
output 2
P4.6
PWM3
19
I/O
General I/O port pin
8-bit Pulse Width Modulation
output 3
P4.7
PWM4
18
I/O
General I/O port pin
Programmable 8-bit Pulse Width
modulation output 4
USB–
8
I/O
Pull-up resistor required (2k
Ω
for 3V
devices, 7.5k
Ω
for 5V devices)
V
REF
70
O
Reference Voltage input for ADC
RD_
65
O
READ signal, external bus
WR_
62
O
WRITE signal, external bus
PSEN_
63
O
PSEN signal, external bus
ALE
4
O
Address Latch signal, external bus
RESET_
68
I
Active low RESET input
XTAL1
48
I
Oscillator input pin for system clock
XTAL2
49
O
Oscillator output pin for system clock
PA0
35
I/O
General I/O port pin
1.
PLD Macro-cell outputs
2.
PLD inputs
3.
Latched Address Out (A0-
A7)
4.
Peripheral I/O Mode
PA1
34
I/O
General I/O port pin
PA2
32
I/O
General I/O port pin
PA3
28
I/O
General I/O port pin
PA4
26
I/O
General I/O port pin
PA5
24
I/O
General I/O port pin
PA6
22
I/O
General I/O port pin
PA7
21
I/O
General I/O port pin
PB0
80
I/O
General I/O port pin
1.
PLD Macro-cell outputs
2.
PLD inputs
3.
Latched Address Out (A0-
A7)
PB1
78
I/O
General I/O port pin
PB2
76
I/O
General I/O port pin
PB3
74
I/O
General I/O port pin
PB4
73
I/O
General I/O port pin
PB5
72
I/O
General I/O port pin
PB6
67
I/O
General I/O port pin
PB7
66
I/O
General I/O port pin
Port Pin
Signal
Name
Pin No.
In/Out
Function
Basic
Alternate