PIC18F2220 MICROCHIP [Microchip Technology], PIC18F2220 Datasheet - Page 104

• Manufacturer Part Number: PIC18F2220
• Description: 28/40/44-Pin High-Performance, Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18F2220/2320/4220/4320
FIGURE 10-2:
FIGURE 10-3:
DS39599C-page 102
RD
TRISA
RA6 Enable
Data
Bus
RD LATA
WR LATA
or
PORTA
WR
TRISA
ECIO or
RCIO
Enable
RD PORTA
Note 1:
Note 1:
RD LATA
Data
Bus
WR LATA
or
PORTA
WR TRISA
Analog
Input
Mode
RD TRISA
RD PORTA
To A/D Converter and LVD Modules
SS Input (RA5 only)
I/O pins have protection diodes to V
I/O pins have protection diodes to V
TRIS Latch
Data Latch
D
D
CK
CK
TRIS Latch
Data Latch
D
D
CK
CK
Q
Q
Q
Q
Q
Q
Q
Q
BLOCK DIAGRAM OF
RA3:RA0 AND RA5 PINS
BLOCK DIAGRAM OF
RA6 PIN
Q
Q
EN
D
DD
EN
DD
V
V
D
N
P
SS
DD
V
and V
V
P
N
and V
SS
DD
TTL
Input
Buffer
I/O pin
SS
I/O pin
SS
TTL
Input
Buffer
.
.
(1)
(1)
FIGURE 10-4:
FIGURE 10-5:
RD
TRISA
RA7 Enable
Data
Bus
RD LATA
WR LATA
or
PORTA
WR
TRISA
RA7
Enable
RD PORTA
Note 1:
RD LATA
Data
Bus
RD PORTA
WR LATA
or
PORTA
WR TRISA
RD TRISA
Note 1:
TMR0 Clock Input
I/O pins have protection diodes to V
I/O pins have protection diodes to V
TRIS Latch
Data Latch
D
D
CK
CK
TRIS Latch
Data Latch
D
D
CK
CK
Q
Q
Q
Q
BLOCK DIAGRAM OF
RA4/T0CKI PIN
BLOCK DIAGRAM OF
RA7 PIN
Q
Q
Q
Q
 2003 Microchip Technology Inc.
Q
Q
EN
EN
Schmitt
Trigger
Input
Buffer
D
DD
V
EN
DD
N
D
SS
To Oscillator
and V
V
V
P
N
and V
SS
DD
SS
I/O pin
I/O pin
SS
TTL
Input
Buffer
.
.
(1)
(1)