PIC16F688

Manufacturer Part NumberPIC16F688
ManufacturerMicrochip Technology Inc.
PIC16F688 datasheet
 


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Page 46/202:

BLOCK DIAGRAM OF RC5

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PIC16F688
4.3.5
RC4/C2OUT/TX/CK
Figure 4-9 shows the diagram for this pin. The RC4 is
configurable to function as one of the following:
• a general purpose I/O
• a digital output from the comparator
• a digital I/O for the EUSART
FIGURE 4-9:
BLOCK DIAGRAM OF RC4
(1)
USART Select
C2OUT EN
EUSART
TX/CLKOUT
0
Data Bus
0
C2OUT
1
1
D
Q
WR
CK
Q
PORTC
D
Q
WR
CK
Q
TRISC
RD
TRISC
RD
PORTC
To EUSART CLK Input
Note 1:
USART Select signals selects between port
data and peripheral output.
TABLE 4-2:
SUMMARY OF REGISTERS ASSOCIATED WITH PORTC
Name
Bit 7
Bit 6
Bit 5
ANSEL
ANS7
ANS6
ANS5
CMCON0
C2OUT
C1OUT
C2INV
PORTC
RC5
TRISC
TRISC5
Legend:
x = unknown, u = unchanged, – = unimplemented locations read as ‘0’. Shaded cells are not used by PORTC.
DS41203C-page 44
4.3.6
RC5/RX/DT
The RC5 is configurable to function as one of the
following:
• a general purpose I/O
• a digital I/O for the EUSART
FIGURE 4-10:
Data Bus
D
Q
WR
CK
Q
V
DD
PORTC
D
Q
WR
CK
Q
I/O Pin
TRISC
RD
V
SS
TRISC
RD
PORTC
To EUSART RX/DT In
Bit 4
Bit 3
Bit 2
Bit 1
ANS4
ANS3
ANS2
ANS1
C1INV
CIS
CM2
CM1
RC4
RC3
RC2
RC1
TRISC4
TRISC3
TRISC2
TRISC1

BLOCK DIAGRAM OF RC5

PIN
EUSART Out
Enable
V
DD
EUSART
1
DT Out
0
I/O Pin
V
SS
Value on
Value on
Bit 0
all other
POR, BOR
Resets
ANS0
1111 1111
1111 1111
CM0
0000 0000
0000 0000
RC0
--xx 0000
--xx 0000
TRISC0
--11 1111
--11 1111
© 2007 Microchip Technology Inc.