PIC16LC63A-04 Datasheet, PDF(30/184 Page) Microchip Technology – 8-Bit CMOS Microcontrollers with A/D Converter

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PIC16LC63A-04 Datasheet, PDF (30/184 Pages) Microchip Technology – 8-Bit CMOS Microcontrollers with A/D Converter

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PIC16C63A/65B/73B/74B

TABLE 5-1: PORTA FUNCTIONS

Name

RA0/AN0(1)

RA1/AN1(1)

RA2/AN2(1)

RA3/AN3/VREF(1)

Bit#

bit0

bit1

bit2

bit3

Buffer

TTL

Function

Digital input/output or analog input.

Digital input/output or analog input or VREF.

RA4/T0CKI

bit4

Digital input/output or external clock input for Timer0.

Output is open drain type.

RA5/SS/AN4(1)

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

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

Note 1: The A/D is not implemented on the PIC16C63A/65B. Pins will operate as digital I/O only. ADCON1 is not

implemented; maintain this register clear.

TABLE 5-2: 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

â PORTA Data Direction Register

--11 1111 --11 1111

9Fh

ADCON1(1) â

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

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

Note 1: The A/D is not implemented on the PIC16C63A/65B. Pins will operate as digital I/O only. ADCON1 is not implemented;

maintain this register clear.

DS30605C-page 30

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