PIC16LC72T-02/SP 查看數據表（PDF） - Microchip Technology

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PIC16LC72T-02/SP

8-Bit CMOS microcontroller with A,D converter

Microchip Technology 

PIC16C72 Series

TABLE 3-1 PORTA FUNCTIONS

Name

Bit# Buffer Function

RA0/AN0

bit0

TTL Input/output or analog input

RA1/AN1

bit1

TTL Input/output or analog input

RA2/AN2

bit2

TTL Input/output or analog input

RA3/AN3/VREF bit3

TTL

Input/output or analog input or VREF

RA4/T0CKI

bit4

ST

Input/output or external clock input for Timer0

Output is open drain type

RA5/SS/AN4

bit5

TTL Input/output or slave select input for synchronous serial port or analog input

Legend: TTL = TTL input, ST = Schmitt Trigger input

TABLE 3-2 SUMMARY OF REGISTERS ASSOCIATED WITH PORTA

Address Name

Bit 7 Bit 6 Bit 5

Bit 4 Bit 3

Bit 2

Bit 1

Bit 0

Value on:

POR,

BOR

Value on all

other resets

05h

PORTA

——

RA5

RA4 RA3

RA2

RA1 RA0 --0x 0000 --0u 0000

85h

TRISA

— — PORTA Data Direction Register

--11 1111 --11 1111

9Fh

ADCON1

——

—

—

—

PCFG2 PCFG1 PCFG0 ---- -000 ---- -000

Legend: x = unknown, u = unchanged, - = unimplemented locations read as '0'. Shaded cells are not used by PORTA.

DS39016A-page 20

Preliminary

© 1998 Microchip Technology Inc.

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