PIC18F248-E/L MICROCHIP [Microchip Technology], PIC18F248-E/L Datasheet - Page 96

• Manufacturer Part Number: PIC18F248-E/L
• Description: 28/40-Pin High-Performance, Enhanced Flash Microcontrollers with CAN Module
• Manufacturer: MICROCHIP [Microchip Technology]

FIGURE 9-1:
FIGURE 9-3:
DS41159E-page 94
PIC18FXX8
Analog
Input Mode
RD LATA
Data Bus
WR LATA
WR PORTA
WR TRISA
RD TRISA
RD PORTA
Note 1: I/O pins have diode protection to V
To A/D Converter and LVD Modules
SS Input (RA5 only)
or
Data Latch
TRIS Latch
D
D
CK
CK
(F
CLKO (F
Data Bus
WR PORTA
WR TRISA
(F
101, 110, 111)
RD TRISA
RD PORTA
(F
Note
OSC
OSC
OSC
RA3:RA0 AND RA5 PINS
Q
BLOCK DIAGRAM
Q
OSC2/CLKO/RA6 PIN BLOCK DIAGRAM
Q
Q
= 110, 100)
= 101, 111)
= 100,
1: CLKO is 1/4 of F
2: I/O pin has diode protection to V
OSC
/4)
Q
TRIS Latch
Data Latch
D
D
CK
CK
EN
D
DD
V
V
P
N
SS
DD
and V
Q
Q
Q
Q
OSC
.
I/O pin
SS
TTL
Input
Buffer
.
(1)
1
0
DD
Data Latch
Q
and V
SS
EN
D
.
FIGURE 9-2:
From OSC1
Note 1: I/O pin has diode protection to V
RD LATA
Data Bus
WR PORTA
WR TRISA
RD TRISA
RD PORTA
WR LATA or
TMR0 Clock Input
Oscillator
Circuit
TRIS Latch
Data Latch
D
D
CK
CK
V
V
N
P
Schmitt
Trigger
Input Buffer
SS
DD
Q
Q
Q
Q
RA4/T0CKI PIN BLOCK
DIAGRAM
© 2006 Microchip Technology Inc.
Q
OSC2/CLKO
RA6 pin
TTL
Input
Buffer
EN
SS
D
V
N
only.
SS
(2)
I/O pin
Schmitt
Trigger
Input
Buffer
(1)