Datasheet

PIC16C745/765
DS41124D-page 32 Preliminary  1999-2013 Microchip Technology Inc.
TABLE 5-1: PORTA FUNCTIONS
TABLE 5-2: SUMMARY OF REGISTERS ASSOCIATED WITH PORTA
Name Function
Input
Type
Output
Type
Description
RA0/AN0
RA0 ST CMOS Bi-directional I/O
AN0 AN — A/D Input
RA1/AN1
RA1 ST CMOS Bi-directional I/O
AN1 AN — A/D Input
RA2/AN2
RA2 ST CMOS Bi-directional I/O
AN2 AN — A/D Input
RA3/AN3/V
REF
RA3 ST CMOS Bi-directional I/O
AN3 AN — A/D Input
V
REF AN — A/D Positive Reference
RA4/T0CKI
RA4 ST OD Bi-directional I/O
T0CKI ST — Timer 0 Clock Input
RA5/AN4
RA5 ST Bi-directional I/O
AN4 AN — A/D Input
Legend: OD = open drain, ST = Schmitt Trigger
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
— — — — — PCFG2 PCFG1 PCFG0 ---- -000 ---- -000
Legend: x = unknown, u = unchanged, - = unimplemented locations read as '0'. Shaded cells are not used by PORTA.