Datasheet

PIC16F610/616/16HV610/616
DS41288F-page 42 © 2009 Microchip Technology Inc.
4.3 PORTC and the TRISC Registers
PORTC is a general purpose I/O port consisting of 6
bidirectional pins. The pins can be configured for either
digital I/O or analog input to A/D Converter (ADC) or
Comparator. For specific information about individual
functions such as the Enhanced CCP or the ADC, refer
to the appropriate section in this data sheet.
EXAMPLE 4-2: INITIALIZING PORTC
Note: The ANSEL register must be initialized to
configure an analog channel as a digital
input. Pins configured as analog inputs will
read ‘0’ and cannot generate an interrupt.
BCF STATUS,RP0 ;Bank 0
CLRF PORTC ;Init PORTC
BSF STATUS,RP0 ;Bank 1
CLRF ANSEL ;digital I/O
MOVLW 0Ch ;Set RC<3:2> as inputs
MOVWF TRISC ;and set RC<5:4,1:0>
;as outputs
BCF STATUS,RP0 ;Bank 0
REGISTER 4-6: PORTC: PORTC REGISTER
U-0 U-0 R/W-x R/W-x R/W-0 R/W-0 R/W-x R/W-x
— — RC5 RC4 RC3 RC2 RC1 RC0
bit 7 bit 0
Legend:
R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’
-n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown
bit 7-6 Unimplemented: Read as ‘0’
bit 5-0 RC<5:0>: PORTC I/O Pin bit
1 = PORTC pin is > V
IH
0 = PORTC pin is < VIL
REGISTER 4-7: TRISC: PORTC TRI-STATE REGISTER
U-0 U-0 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1
— — TRISC5 TRISC4 TRISC3 TRISC2 TRISC1 TRISC0
bit 7 bit 0
Legend:
R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’
-n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown
bit 7-6 Unimplemented: Read as ‘0’
bit 5-0 TRISC<5:0>: PORTC Tri-State Control bit
1 = PORTC pin configured as an input (tri-stated)
0 = PORTC pin configured as an output