SPMC802B

4. SIGNAL DESCRIPTIONS

4.1. PIN Descriptions (32 PIN)

Mnemonic

PIN No.

Functional Description

VDD

28

System Power Supply.

VSS

27

System Ground.

XO/R

4

Crystal In or Resistor In Input. An external resistive pull-up is used to connect with internal OSC

circuitry for generating the internal clock and the related time base in R-Oscillation mode. It will

be connected with external crystal for a crystal oscillation circuitry in crystal mode.

XI

5

Crystal Output or External Clock Input. External clock input is used to connect with internal clock

circuitry to generate the internal clock and the related time base in External clock mode. It will

be connected with external crystal for a crystal oscillation circuitry in crystal mode.

PA7:0

9, 10, 11, 12

20, 21, 22, 23

GPIO Port A7:0. General-purpose inputs/outputs. Using the internal setting can configure it. In

addition, PA7 can be used as the external interrupt input. PA5:4 can be the compare inputs of

Comparator. PA3:0 can be the group input of external interrupt.

PB5

24

GPIO Port B5.

General-purpose input/output.

Using the internal setting can configure it.

In

addition, PB5 can be used as the external Main IRQ input. It is used as Programming Voltage

input in Programming mode.

PB1

(SCK)

29

GPIO Port B1.

General-purpose input/output.

Using the internal setting can configure it.

In

addition, it is used as Serial Clock input in Programming mode.

PB0

(SDA)

13

GPIO Port B0. General-purpose input/output or the voltage reference input for the Comparator.

Using the internal setting can configure it. In addition, it is used as Serial Data input/output in

Programming mode.

PB7:6,4:2

19, 14, 6,

3, 30

GPIO Port B7:6,4:2. General-purpose inputs/output. Using the internal setting can configure it. In

addition, PB7 can be the PWM waveform output. PB6 can be set as external event/clock input

for Timer 2. PB4 can be used as the Main nRESET input.

PC7:0

32, 1, 17, 16

31, 2, 18, 15

GPIO Port C7:0. General-purpose inputs/outputs. Using the internal setting can configure it. In

addition, these pins can be used as the external interrupt inputs.

PD3:0

8, 7, 26, 25

GPIO Port D3:0. General-purpose inputs/outputs. Using the internal setting can configure it.

4.2. PIN Assignment

4.2.1. 32 PIN package

SPMC802B

4.2.2. 28 PIN package

SPMC802B

© Sunplus Technology Co., Ltd.

Proprietary & Confidential

5

AUG. 07, 2002

Version: 1.0