PIC16F737-I Datasheet, PDF (64/276 Pages) Microchip Technology – 28/40/44-Pin, 8-Bit CMOS Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology

PIC16F7X7
FIGURE 5-14:
BLOCK DIAGRAM OF RB6/PGC PIN
Program Mode/ICD
RBPU⁽¹⁾
Data Bus
WR PORTB
WR TRISB
Data Latch
DQ
CK
TRIS Latch
DQ
CK
RD TRISB
VDD
P
Weak
Pull-up
I/O pin
TTL
Input Buffer
Latch
QD
Set RBIF
RD PORTB
Program Mode/ICD
EN
Q1
From other
RB7:RB4 pins
PGC
Schmitt Trigger
Buffer
QD
RD PORTB
EN
Q3
Note 1: To enable weak pull-ups, set the appropriate TRIS bit(s) and clear the RBPU bit.
DS30498C-page 62
 2004 Microchip Technology Inc.