PIC16F84A-20E/SO Microchip Technology, PIC16F84A-20E/SO Datasheet - Page 489
PIC16F84A-20E/SO
Manufacturer Part Number
PIC16F84A-20E/SO
Description
IC MCU CMOS 20MHZ 1K FLSH 18SOIC
Manufacturer
Microchip Technology
Series
PIC® 16Fr
Datasheets
1.PIC16F688T-ISL.pdf
(688 pages)
2.PIC16F84A-04P.pdf
(88 pages)
3.PIC16F84A-04P.pdf
(6 pages)
Specifications of PIC16F84A-20E/SO
Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Peripherals
POR, WDT
Number Of I /o
13
Program Memory Size
1.75KB (1K x 14)
Program Memory Type
FLASH
Eeprom Size
64 x 8
Ram Size
68 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 5.5 V
Oscillator Type
External
Operating Temperature
-40°C ~ 125°C
Package / Case
18-SOIC (7.5mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Data Converters
-
Connectivity
-
- Current page: 489 of 688
- Download datasheet (3Mb)
Section 26. Watchdog Timer and Sleep Mode
Example 26-1:
Example 26-2:
1997 Microchip Technology Inc.
Changing Prescaler (Timer0 WDT)
Changing Prescaler (WDT Timer0)
To change prescaler from the WDT to the Timer0 module use the sequence shown in
Example
BSF
MOVLW
MOVWF
BCF
CLRF
BSF
MOVLW
MOVWF
CLRWDT
MOVLW
MOVWF
BCF
CLRWDT
BSF
MOVLW
MOVWF
BCF
26-2.
STATUS, RP0
B’xx0x0xxx’
OPTION_REG
STATUS, RP0
TMR0
STATUS, RP0
B’xxxx1xxx’
OPTION_REG
b'xxxx1xxx'
OPTION_REG
STATUS, RP0
STATUS, RP0
b'xxxx0xxx'
OPTION_REG
STATUS, RP0
; Bank1
; Select clock source and postscale value
;
; Bank0
; Clear TMR0 & Prescaler
; Bank1
; Select WDT, do not change prescale value
;
; Clears WDT
; Select new prescale value and WDT
;
; Bank0
; Clear WDT and postscaler
; Bank1
; Select TMR0, new prescale
; value and clock source
; Bank0
other than 1:1
DS31026A-page 26-5
26
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