PIC16F737-I Datasheet, PDF (62/276 Pages) Microchip Technology – 28/40/44-Pin, 8-Bit CMOS Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology

PIC16F7X7
FIGURE 5-12:
BLOCK DIAGRAM OF RB4/AN11 PIN
Analog
Input Mode
RBPU⁽¹⁾
Data Bus
WR PORTB
WR TRISB
Data Latch
DQ
CK
TRIS Latch
DQ
CK
VDD
P
Weak
Pull-up
VDD
P
N
I/O pin
VSS
RD TRISB
Analog
Input Mode
TTL
Input Buffer
Set RBIF
RD PORTB
From other
RB7:RB4 pins
To A/D channel input
Analog
Input Mode
Latch
QD
EN
Q1
QD
EN
RD PORTB
Q3
Note 1: To enable weak pull-ups, set the appropriate TRIS bit(s) and clear the RBPU bit.
DS30498C-page 60
 2004 Microchip Technology Inc.