PIC16F7X7
FIGURE 5-11:
BLOCK DIAGRAM OF RB3/CCP2(1)/AN9 PIN
Analog
Input Mode
CCP2 Output Select and CCPMX
CCP2 Output
1
0
VDD
(2)
RBPU
Weak
P
Pull-up
VDD
P
Data Latch
Data Bus
D
Q
WR PORTB
CK
I/O pin
N
VSS
TRIS Latch
D
Q
WR TRISB
Q
CK
Analog
Input Mode
TTL
Input Buffer
RD TRISB
Q
D
RD PORTB
EN
RD PORTB
To A/D Channel Input
To CCP Module Input
Analog
Input Mode
Schmitt Trigger
Buffer
(3)
Note 1: Pin location of CCP2 is determined by the CCPMX bit in Configuration Word Register 1.
2: To enable weak pull-ups, set the appropriate TRIS bit(s) and clear the RBPU bit.
2
3: The SDA Schmitt Trigger conforms to the I C™ specification.
2004 Microchip Technology Inc.
DS30498C-page 59