PIC16F688

Manufacturer Part NumberPIC16F688
ManufacturerMicrochip Technology Inc.
PIC16F688 datasheet
 


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PIC16F688
4.3
PORTC
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 or compara-
tor. For specific information about individual functions
such as the EUSART or the A/D converter, refer to the
appropriate section in this data sheet.
Note:
The ANSEL and CMCON0 registers must
be initialized to configure an analog
channel as a digital input. Pins configured
as analog inputs will read ‘0’.
REGISTER 4-6:
PORTC: PORTC REGISTER
U-0
U-0
R/W-x
RC5
bit 7
Legend:
R = Readable bit
W = Writable bit
-n = Value at POR
‘1’ = Bit is set
bit 7-6
Unimplemented: Read as ‘0’
bit 5-0
RC<5:0>: PORTC I/O Pin bit
1 = PORTC pin is > V
0 = PORTC pin is < V
REGISTER 4-7:
TRISC: PORTC TRI-STATE REGISTER
U-0
U-0
R/W-1
TRISC5
bit 7
Legend:
R = Readable bit
W = Writable bit
-n = Value at POR
‘1’ = Bit is set
bit 7-6
Unimplemented: Read as ‘0’
bit 5-0
TRISC<5:0>: PORTC Tri-State Control bits
1 = PORTC pin configured as an input (tri-stated)
0 = PORTC pin configured as an output
DS41203C-page 42
EXAMPLE 4-3:
BANKSEL PORTC
CLRF
PORTC
MOVLW
07h
MOVWF
CMCON0
BANKSEL ANSEL
CLRF
ANSEL
MOVLW
0Ch
MOVWF
TRISC
R/W-x
R/W-0
RC4
RC3
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
IH
IL
R/W-1
R/W-1
TRISC4
TRISC3
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
INITIALIZING PORTC
;
;Init PORTC
;Set RC<4,1:0> to
;digital I/O
;
;digital I/O
;Set RC<3:2> as inputs
;and set RC<5:4,1:0>
;as outputs
R/W-0
R/W-0
R/W-0
RC2
RC1
RC0
bit 0
x = Bit is unknown
R/W-1
R/W-1
R/W-1
TRISC2
TRISC1
TRISC0
bit 0
x = Bit is unknown
© 2007 Microchip Technology Inc.