PIC16HV540 Microchip Technology, PIC16HV540 Datasheet - Page 20

• Manufacturer Part Number: PIC16HV540
• Description: Enhanced PIC16C54 EPROM-Based 8-Bit CMOS Microcontroller
• Manufacturer: Microchip Technology

PIC16HV540
FIGURE 5-1:
FIGURE 5-2:
DS40197B-page 20
DATA
BUS
WR
PORTB
W
REG
TRIS
PORTB
D
D
CK
CK
BLOCK DIAGRAM OF PORTA<0:3> PINS
BLOCK DIAGRAM OF PORTB<0:3> PINS
Data
Latch
TRIS
Latch
DATA
BUS
WR
PORTA
W
REG
TRIS
PORTA
WAKE-UP ON
PIN CHANGE
Q
Q
Q
Q
RD PORTB
D
D
CK
CK
Reset
TRIS
Latch
Data
Latch
Q
Q
Q
Q
M
U
X
Preliminary
Q
Q
RD PORTA
Step-up
Circuit
CK
V
D
DD
V
V
P
N
SS
IO
V
V
P
N
DD
SS
V
Step-down
IO
V
Circuit
SS
V
“SLEEP”
RD PORTB
DD
2000 Microchip Technology Inc.
V
SS
RA0-RA3
pins
RB0-RB3
pins