PIC18F1220_07 Datasheet, PDF (98/308 Pages) Microchip Technology – 18/20/28-Pin High-Performance, Enhanced Flash Microcontrollers with 10-bit A/D and nanoWatt Technology

PIC18F1220/1320
FIGURE 10-13: BLOCK DIAGRAM OF RB6/PGC/T1OSO/T13CKI/P1C/KBI2 PIN
ECCP1 P1C/D Enable
RBPU⁽²⁾
P1B/D Tri-State Auto-Shutdown
P1C Data
VDD
P
Weak
Pull-up
1
0
RD LATB
Data Bus
WR LATB or
PORTB
D
Q
CK Q
Data Latch
WR TRISB
D
Q
CK Q
TRIS Latch
T1OSCEN
RD TRISB
Set RBIF
RD PORTB
From other
RB7:RB4 pins
PGC
TTL
Buffer
Q
D
EN
Schmitt
Trigger
Q1
QD
RD PORTB
EN
Q3
T13CKI
Note 1: I/O pins have diode protection to VDD and VSS.
2: To enable weak pull-ups, set the appropriate TRIS bit(s) and clear the RBPU bit (INTCON2<7>).
RB6 pin
Timer1
Oscillator
From RB7 pin
DS39605F-page 96
© 2007 Microchip Technology Inc.