PIC16F747 Microchip Technology Inc., PIC16F747 Datasheet - Page 65

• Manufacturer Part Number: PIC16F747
• Description: 28/40/44-pin, 8-bit Cmos Flash Microcontrollers With 10-bit A/d And Nanowatt Technology
• Manufacturer: Microchip Technology Inc.

FIGURE 5-15:
 2004 Microchip Technology Inc.
Note 1: To enable weak pull-ups, set the appropriate TRIS bit(s) and clear the RBPU bit.
Port/Program Mode/ICD
BLOCK DIAGRAM OF RB7/PGD PIN
RBPU
Data Bus
WR PORTB
PGD DRVEN
WR TRISB
PGD
Set RBIF
From other
RB7:RB4 pins
(1)
PGD
RD PORTB
TRIS Latch
RD TRISB
Data Latch
D
D
CK
CK
Q
Q
Program Mode/ICD
1
0
1
0
Input Buffer
Q
Q
Latch
EN
EN
D
D
TTL
PIC16F7X7
Q1
V
P
DD
Weak
Pull-up
I/O pin
RD PORTB
Q3
DS30498C-page 63