PIC12F635/PIC16F636/639
4.3.6
RC4/C2OUT
Figure 4-9 shows the diagram for this pin. The RC4 pin
is configurable to function as one of the following:
• a general purpose I/O
• a digital output from the comparator
FIGURE 4-9:
BLOCK DIAGRAM OF RC4
C2OUT Enable
C2OUT
Data Bus
VDD
D
Q
Q
WR
PORTC
CK
1
0
I/O pin
D
Q
Q
WR
TRISC
CK
VSS
RD
TRISC
RD
PORTC
TABLE 4-2:
SUMMARY OF REGISTERS ASSOCIATED WITH PORTC
Value on
POR, BOR,
WUR
Value on
all other
Resets
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
PORTC
CMCON0
TRISC
—
—
RC5
RC4
RC3
CIS
RC2
CM2
RC1
CM1
RC0
CM0
--xx xx00
0000 0000
--11 1111
--uu uu00
0000 0000
--11 1111
C2OUT C1OUT
C2INV
C1INV
—
—
TRISC5 TRISC4 TRISC3 TRISC2 TRISC1 TRISC0
Legend:
x= unknown, u= unchanged, – = unimplemented locations read as ‘0’. Shaded cells are not used by PORTA.
© 2007 Microchip Technology Inc.
DS41232D-page 59
MICROCHIP [ MICROCHIP ]
