
PIC18F6585/8585/6680/8680
DS30491C-page 140
2004 Microchip Technology Inc.
FIGURE 10-14:
RF6:RF3 AND RF0 PINS
BLOCK DIAGRAM
FIGURE 10-15:
RF7 PIN BLOCK
DIAGRAM
Data
Bus
Q
D
Q
CK
Q
D
Q
CK
QD
EN
P
N
WR LATF
WR TRISF
Data Latch
TRIS Latch
RD TRISF
RD PORTF
VSS
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 VDD and VSS.
Data
Bus
WR LATF
WR TRISF
RD PORTF
Data Latch
TRIS Latch
RD TRISF
Schmitt
Trigger
Input
Buffer
I/O pin
Q
D
CK
Q
D
CK
EN
QD
EN
RD LATF
or
WR PORTF
Note:
I/O pins have diode protection to VDD and VSS.
TTL
Input
Buffer
SS Input