Datasheet

PIC16C712/716
DS41106C-page 26  1999-2013 Microchip Technology Inc.
FIGURE 3-5: BLOCK DIAGRAM OF RB2/T1OSI PIN
FIGURE 3-6: BLOCK DIAGRAM OF RB3/CCP1 PIN
P
V
DD
weak
pull-up
QD
Q
CK
QD
Q
CK
TTL Buffer
TRISB<2>
PORTB<2>
DATA BUS
WR PORTB
WR TRISB
T1OSCEN
RD PORTB
RB1/T1OSO/T1CKI
RBPU
(1)
T1OSCEN
VSS
VDD
Note 1: To enable weak pull-ups, set the appropriate TRIS bit(s) and clear the RBPU bit (OPTION_REG<7>).
0
1
QD
Q
CK
QD
Q
CK
QD
Q
CK
QD
Q
CK
0
1
0
1
TRISB<3>
PORTB<3>
TRISCCP<2>
DATACCP<2>
RB3/CCP1
RD
DATA BUS
WR
WR
WR
WR
RD PORTB
CCPON
TTL Buffer
0
1
0
1
CCPOUT
CCPIN
CCPON
DATACCP
DATACCP
TRISCCP
PORTB
TRISB
CCP
Output
Mode
P
V
DD
weak
pull-up
RBPU
(1)
CCPON
VSS
VDD
Note 1: To enable weak pull-ups, set the appropriate TRIS bit(s) and clear the RBPU bit (OPTION_REG<7>).