PIC16HV540 Datasheet, PDF (4/36 Pages) Microchip Technology – Enhanced PIC16C54 EPROM-Based 8-Bit CMOS Microcontroller With On-Chip Voltage Regulator

PIC16HV540
3.0 ARCHITECTURAL OVERVIEW
This section provides information on the architecture of the PIC16HV540. For information on operation of the periph-
erals, electrical specifications, etc., please refer to the PIC16C5X data sheet (DS30453).
FIGURE 3-1: PIC16HV540 BLOCK DIAGRAM
VDD
3V/5V
Regulator
RB7
4
RB3 : RB0
FILTER
PC
(PIN CHANGE)
WPC
BOD
VREG
RL/SL
BL/BE
SWE (OPTION2 REGISTER)
EPROM
512 X 12
12
9-11
PC
9-11
STACK 1
STACK 2
STACK 3
STACK 4
INSTRUCTION
REGISTER
12
WDT
9
TIME
OUT
T0CKI
PIN
CONFIGURATION WORD ^{OSC1 OSC2 MCLR}
“DISABLE”
“OSC
SELECT”
WATCH-
DOG
2
“CODE
PROTECT”
WDT/TMR0
PRESCALER
CLKOUT
OSCILLATOR/
TIMING &
CONTROL
INSTRUCTION
DECODER
DIRECT ADDRESS
8
STATUS
8
6
6
OPTION2
OPTION
“TRIS 7”
FROM W
FROM W
DIRECT RAM
5
ADDRESS
“OPTION”
5-7
“SLEEP”
GENERAL
PURPOSE
REGISTER
FILE
(SRAM)
25 Bytes
TMR0
FSR
8
DATA BUS
W
ALU
FROM W
8
FROM W
4
4
8
8
“TRIS 5”
“TRIS 6”
TRISA PORTA
TRISB PORT
4
8
VIO
3V/5V
Regulator
RA3:RA0
HIGH VOLTAGE
TRANSLATION
8
RB7:RB0
DS40197A-page 4
Preliminary
© 1998 Microchip Technology Inc.