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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 r equired (2k for 3V
devices, 7.5k for 5V devices)
VREF 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 Pi n Signal
Name Pin No. In/Out Function
Basic Alternate