Datasheet

PIC18F6520/8520/6620/8620/6720/8720
DS39609C-page 118  2003-2013 Microchip Technology Inc.
FIGURE 10-14: RF6:RF3 AND RF0 PINS
BLOCK DIAGRAM
FIGURE 10-15: RF7 PIN BLOCK
DIAGRAM
Data
Bus
QD
Q
CK
QD
Q
CK
QD
EN
P
N
WR LATF
WR TRISF
Data Latch
TRIS Latch
RD TRISF
RD PORTF
V
SS
VDD
I/O pin
Analog
Input
Mode
ST
Input
Buffer
To A/D Converter or Comparator Input
RD LATF
or
WR PORTF
Note 1: I/O pins have diode protection to V
DD and VSS.
Data
Bus
WR LATF
WR TRISF
RD PORTF
Data Latch
TRIS Latch
RD TRISF
Schmitt
Trigger
Input
Buffer
I/O pin
QD
CK
QD
CK
EN
QD
EN
RD LATF
or
WR PORTF
Note: I/O pins have diode protection to V
DD and VSS.
TTL
Input
Buffer
SS Input