PIC16C925T-S/CL 查看數據表（PDF） - Microchip Technology

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PIC16C925T-S/CL

64/68-Pin CMOS Microcontrollers with LCD Driver

Microchip Technology 

PIC16C925/926

TABLE 4-1: 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/AN4/SS

bit5 TTL Input/output or analog input or slave select input for synchronous serial port.

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

TABLE 4-2: 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

Power-on

Reset

Value on

all other

RESETS

05h

PORTA

— — RA5

RA4

RA3

RA2

RA1

RA0 --0x 0000 --0x 0000

85h

TRISA

— — PORTA Data Direction Control 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.

DS39544A-page 30

Preliminary

 2001 Microchip Technology Inc.

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