PIC18C242 MICROCHIP [Microchip Technology], PIC18C242 Datasheet - Page 78

• Manufacturer Part Number: PIC18C242
• Description: High-Performance Microcontrollers with 10-Bit A/D
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18CXX2
FIGURE 8-1:
FIGURE 8-2:
DS39026B-page 78
Note 1: I/O pins have protection diodes to V
WR TRISA
WR TRISA
WR LATA
or
PORTA
WR LATA
or
PORTA
Note 1: I/O pin has protection diodes to V
Data
Bus
RD PORTA
Data
Bus
To A/D Converter and LVD Modules
SS input (RA5 only)
RD PORTA
TMR0 Cock Input
D
D
Data Latch
TRIS Latch
CK
CK
Data Latch
TRIS Latch
RD LATA
D
D
BLOCK DIAGRAM OF
RA3:RA0 AND RA5 PINS
BLOCK DIAGRAM OF RA4/
T0CKI PIN
CK
CK
RD LATA
RD TRISA
Q
Q
Q
Q
RD TRISA
Q
Q
Q
Q
Q
Q
Analog
input
mode
EN
EN
Schmitt
Trigger
input
buffer
D
EN
D
V
V
P
N
SS
DD
V
N
SS
SS
DD
only.
TTL
input
buffer
I/O pin
and V
I/O pin
(1)
SS
Preliminary
.
(1)
FIGURE 8-3:
WR LATA
or
PORTA
Note 1: I/O pins have protection diodes to V
WR
TRISA
Data Bus
Data Bus
RD PORTA
Data
Bus
ECRA6 or
RCRA6 enable
RD TRISA
D
D
Data Latch
TRIS Latch
CK
CK
RD LATA
Q
Q
Q
Q
BLOCK DIAGRAM OF RA6
7/99 Microchip Technology Inc.
ECRA6 or
RCRA6
enable
Q
V
V
P
N
EN
SS
DD
D
DD
and V
I/O pin
TTL
input
buffer
SS
(1)
.