PIC18F6520-I Datasheet, PDF (128/380 Pages) Micrel Semiconductor – 64/80-Pin High-Performance, 256 Kbit to 1 Mbit Enhanced Flash Microcontrollers with A/D

PIC18F6520/8520/6620/8620/6720/8720
FIGURE 10-21: RJ4:RJ0 PINS BLOCK DIAGRAM IN SYSTEM BUS MODE
RD PORTJ
Q
D
ENEN
RD LATJ
Data Bus
WR LATJ
or
PORTJ
D
Q
CK
Data Latch
Port ₀
Data ₁
I/O pin⁽¹⁾
WR TRISJ
DQ
CK
TRIS Latch
RD TRISJ
System Bus
Control
Control Out
External Enable
Drive System
Note 1: I/O pins have diode protection to VDD and VSS.
FIGURE 10-22: RJ7:RJ6 PINS BLOCK DIAGRAM IN SYSTEM BUS MODE
RD PORTJ
Q
D
ENEN
RD LATJ
Data Bus
WR LATJ
or
PORTJ
WR TRISJ
D
Q
CK
Data Latch
DQ
CK
TRIS Latch
Port ₀
Data ₁
System Bus
Control
RD TRISJ
UB/LB Out
WM = 01
Drive System
Note 1: I/O pins have diode protection to VDD and VSS.
I/O pin⁽¹⁾
DS39609B-page 126
 2004 Microchip Technology Inc.