PIC18F2331 MICROCHIP [Microchip Technology], PIC18F2331 Datasheet - Page 118

• Manufacturer Part Number: PIC18F2331
• Description: 28/40/44-Pin Enhanced Flash Microcontrollers with nanoWatt Technology, High Performance PWM and A/D
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18F2331/2431/4331/4431
FIGURE 10-12:
DS39616B-page 116
PGC
Enable Debug
From other
RB7:RB4 pins
WR TRISB
Note 1: To enable weak pull-ups, set the appropriate TRIS bit(s) and clear the RBPU bit (INTCON2<7>).
Set RBIF
WR LATB
(2)
Data Bus
PORTB
/PGD
or ICSP
2: PGC is available on RB6.
3: PGD is available on RB7.
RBPU
or
(3)
(1)
RD PORTB
BLOCK DIAGRAM OF RB7:RB6 PINS
TRIS Latch
D
Data Latch
D
RD LATB
RD TRISC
CK
CK
Enable Debug or ICSP
Q
Q
Q
Q
Q
EN
D
Preliminary
RD PORTB
Q
Enable
Debug
0
1
BRBx
EN
Q3
D
0
BTRISx
Q1
1
TTL
Input
Buffer
Enable
Debug
P
Weak
Pull-up
Schmitt
Trigger
 2003 Microchip Technology Inc.
RB7/RB6
Pin