PIC18FXX20 Datasheet, PDF (120/366 Pages) Microchip Technology – 64/80-Pin High Performance 1 Mbit Enhanced FLASH Microcontrollers with A/D

PIC18FXX20
FIGURE 10-14:
RF6:RF3 AND RF0 PINS
BLOCK DIAGRAM
RD LATF
Data
Bus
WR LATF
or
WR PORTF
WR TRISF
D
Q
CK _Q
Data Latch
D
Q
CK
Q
TRIS Latch
VDD
P
N
I/O pin
VSS
Analog
Input
Mode
RD TRISF
Q
D
ST
Input
Buffer
EN
RD PORTF
To A/D Converter or Comparator Input
Note 1: I/O pins have diode protection to VDD and VSS.
FIGURE 10-15:
RF7 PIN BLOCK
DIAGRAM
RD LATF
Data
Bus
WR LATF or
WR PORTF
WR TRISF
D
Q
CK
Data Latch
DQ
CK
TRIS Latch
Schmitt
Trigger
Input
Buffer
RD PORTF
RD TRISF
Q
D
ENEN
I/O pin
TTL
Input
Buffer
SS Input
Note:
I/O pins have diode protection to VDD and VSS.
DS39609A-page 118
Advance Information
 2003 Microchip Technology Inc.