Datasheet

PIC16C6X
DS30234E-page 52  1997-2013 Microchip Technology Inc.
TABLE 5-1: PORTA FUNCTIONS
TABLE 5-2: REGISTERS/BITS ASSOCIATED WITH PORTA
Name Bit# Buffer Type Function
RA0 bit0 TTL Input/output
RA1 bit1 TTL Input/output
RA2 bit2 TTL Input/output
RA3 bit3 TTL Input/output
RA4/T0CKI bit4 ST Input/output or external clock input for Timer0.
Output is open drain type.
RA5/SS
(1)
bit5 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’.
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)
RA4RA3RA2RA1RA0--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'.