PIC16LF870-I/SO View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16LF870-I/SO

28/40-Pin, 8-Bit CMOS FLASH Microcontrollers

Microchip Technology 

PIC16F870/871

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/AN4

bit5 TTL Input/output 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 ADFM —

—

— PCFG3 PCFG2 PCFG1 PCFG0 --0- 0000 --0- 0000

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

PORTA.

DS30569A-page 28

Preliminary

© 1999 Microchip Technology Inc.

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