PIC18F242 MICROCHIP [Microchip Technology], PIC18F242 Datasheet - Page 90

• Manufacturer Part Number: PIC18F242
• Description: 28/40-pin High Performance, Enhanced FLASH Microcontrollers with 10-Bit A/D
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18FXX2
FIGURE 9-2:
DS39564C-page 88
WR LATA
or
PORTA
WR TRISA
Note 1:
Data
Bus
RD PORTA
TMR0 Clock Input
I/O pin has protection diode to V
TRIS Latch
Data Latch
D
D
CK
CK
RD LATA
RD TRISA
Q
Q
Q
Q
BLOCK DIAGRAM OF
RA4/T0CKI PIN
Q
EN
EN
Schmitt
Trigger
Input
Buffer
D
SS
V
N
only.
SS
I/O pin
(1)
FIGURE 9-3:
ECRA6 or
RCRA6
Enable
WR LATA
or
PORTA
Note 1:
WR
TRISA
RD PORTA
Data
Bus
ECRA6 or
RCRA6 Enable
I/O pins have protection diodes to V
RD TRISA
TRIS Latch
Data Latch
D
D
CK
CK
RD LATA
Q
Q
Q
Q
BLOCK DIAGRAM OF
RA6 PIN
© 2006 Microchip Technology Inc.
Q
DD
EN
D
and V
V
V
P
N
SS
DD
SS
I/O pin
TTL
Input
Buffer
.
(1)