PIC18F2331 MICROCHIP [Microchip Technology], PIC18F2331 Datasheet - Page 110

• Manufacturer Part Number: PIC18F2331
• Description: 28/40/44-Pin Enhanced Flash Microcontrollers with nanoWatt Technology, High Performance PWM and A/D
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18F2331/2431/4331/4431
FIGURE 10-2:
FIGURE 10-4:
DS39616B-page 108
WR TRISA
WR LATA
or
PORTA
Data
Bus
RD PORTA
To A/D Converter
To A/D Converter
To CAP1/INDX or CAP2/QEA
Data Bus
WR LATA
or
PORTA
WR TRISA
RD PORTA
D
D
Data Latch
TRIS Latch
CK
CK
RD LATA
BLOCK DIAGRAM OF RA0
BLOCK DIAGRAM OF RA3:RA2 PINS
Q
Q
Q
Q
RD TRISA
Q
Data Latch
TRIS Latch
D
D
RD TRISA
RD LATA
CK
CK
Analog
Input
Mode
EN
D
V
V
Q
Q
Q
Q
P
N
SS
DD
TTL
Input
Buffer
I/O Pin
Preliminary
Q
FIGURE 10-3:
WR TRISA
WR LATA
or
PORTA
To A/D Converter
Data Bus
RD PORTA
EN
D
TRIS Latch
V
Data Latch
V
N
P
D
SS
D
Analog
Input
Mode
RD TRISA
DD
RD LATA
CK
CK
Q
Q
Q
Q
BLOCK DIAGRAM OF RA1
 2003 Microchip Technology Inc.
TTL
Q
Analog
Input
Mode
EN
D
I/O Pin
V
Schmitt
Trigger
Input
Buffer
V
N
P
SS
DD
TTL
RA1