PIC16CR67-20E/SO View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16CR67-20E/SO

8-Bit CMOS Microcontrollers

Microchip Technology 

PIC16C6X

TABLE 5-1: PORTA FUNCTIONS

Name

Bit#

Buffer Type Function

RA0

bit0

RA1

bit1

RA2

bit2

RA3

bit3

RA4/T0CKI

bit4

RA5/SS (1)

bit5

TTL

Input/output

TTL

Input/output

TTL

Input/output

TTL

Input/output

ST

Input/output or external clock input for Timer0.

Output is open drain type.

TTL

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

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

Note 1: The PIC16C61 does not have PORTA<5> or TRISA<5>, read as ‘0’.

TABLE 5-2: REGISTERS/BITS 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(1)

RA4

RA3

RA2

RA1

RA0 --xx xxxx --uu uuuu

85h

TRISA

—

— PORTA Data Direction Register(1)

--11 1111 --11 1111

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

Note 1: PORTA<5> and TRISA<5> are not implemented on the PIC16C61, read as '0'.

DS30234D-page 52

© 1997 Microchip Technology Inc.

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