PIC18F2331 Datasheet, PDF (117/396 Pages) Microchip Technology – 28/40/44-Pin Enhanced Flash Microcontrollers with nanoWatt Technology, High Performance PWM and A/D

PIC18F2331/2431/4331/4431
FIGURE 10-11: BLOCK DIAGRAM OF RB5
PORT/PWM Select
PWM4 Data
0
VDD
1
P
Data Bus
WR PORT
WR TRIS
D
Q
CK ^Q
Data Latch
D
Q
CK
TRIS Latch
RD TRIS
RD PORT
Set RBIF
From other
RB7:RB4 pins
N
VSS
RBPU
TTL
Input
Buffer
Q
D
EN
Q1
Q
D
EN
RD Port
Q3
LVP Configuration Bit
1 = Low V Prog Enable
0 = only HV Prog
Enable ICSP
VDD
P
Weak
Pull-up
RB5/PGM
Schmitt
Trigger
 2003 Microchip Technology Inc.
Preliminary
DS39616B-page 115