PIC16LC924-08/CL View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16LC924-08/CL

8-Bit CMOS Microcontroller with LCD Driver

Microchip Technology 

PIC16C9XX

TABLE 5-1: PORTA FUNCTIONS

Name

Bit# Buffer Function

RA0/AN0(1)

bit0

RA1/AN1(1)

bit1

RA2/AN2(1)

bit2

RA3/AN3/VREF(1) bit3

TTL Input/output or analog input

TTL Input/output or analog input

TTL Input/output or analog input

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 (1) bit5

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

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

Note 1: The AN and VREF functions are for the A/D module and are only implemented on the PIC16C924.

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

Power-on

Reset

Value on

all other

resets

05h

PORTA

——

RA5

RA4

RA3

RA2

RA1

RA0

(2)

(2)

85h

TRISA

— — PORTA Data Direction Control Register

--11 1111 --11 1111

9Fh(1)

ADCON1 — —

—

—

— 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 ADCON1 register is implemented on the PIC16C924 only.

2: PIC16C923 reset values for PORTA: --xx xxxx for a POR, and --uu uuuu for all other resets,

PIC16C924 reset values for PORTA: --0x 0000 when read.

DS30444E - page 32

© 1997 Microchip Technology Inc.

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