SH79F166APSLASH044PR datasheet(38/113 Pages) SINOWEALTH

38 / 113 page

SH79F166A

PORT4:

- INT40-INT43 (P4.0-P4.3): External interrupt input

- AN0-AN3 (P4.0-P4.3): ADC input channel

- AVREF (P4.4): ADC reference voltage

Table 7.23 PORT4 Share Table

Pin No.

Priority

Function

Enable bit

AVREF

Set REFC bit in ADCON register

P4.4

Above condition is not met

15-18

AN3-AN0

Set CH3-0 bit in ADCH Register and

set ADON bit in ADCON Register, and set SCH [2:0]

INT43-INT40

Set EX4 bit in IEN1 register and EXS43-40 bit in IENC register, P4.3-P4.0 in

input mode

P4.3-P4.0

Above condition is not met

PORT5:

- XTAL1 (P5.0): XTAL input

- XTAL2 (P5.1): XTAL output

- RST

———

(P5.2): system reset pin

- BUZ (P5.3): Buzzer output

- T3 (P5.3): Timer3 external input

Table 7.24 PORT5 Share Table

Pin No.

Priority

Function

Enable bit

XTAL1

Selected by Code Option

P5.0

Above condition is not met

XTAL2

Selected by Code Option

P5.1

Above condition is not met

RST

———

Selected by Code Option

P5.2

Above condition is not met

BUZ

Set BZEN bit in BUZCON register

Set TR3 bit in T3CON register and T3CLKS[1:0] = 01 (Auto Pull up)

P5.3

Above condition is not met

SH79F166AP/044PR Datasheet(PDF) 38 Page - SINOWEALTH Electronic Ltd

SH79F166AP/044PR Datasheet(HTML) 38 Page - SINOWEALTH Electronic Ltd

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