PIC16F84A-04I/SS Microchip Technology, PIC16F84A-04I/SS Datasheet - Page 118

• Manufacturer Part Number: PIC16F84A-04I/SS
• Description: IC MCU FLASH 1KX14 EE 20SSOP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F84A-04I/SS

• Core Size: 8-Bit
• Program Memory Size: 1.75KB (1K x 14)
• Core Processor: PIC
• Speed: 4MHz
• Peripherals: POR, WDT
• Number Of I /o: 13
• 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 ~ 85°C
• Package / Case: 20-SSOP
• Controller Family/series: PIC16F
• No. Of I/o's: 13
• Eeprom Memory Size: 64Byte
• Ram Memory Size: 68Byte
• Cpu Speed: 4MHz
• No. Of Timers: 1
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT20SS1-1 - SOCKET TRANSITION 20DIP 20SSOPI3-DB16F84A - BOARD DAUGHTER ICEPIC3AC164307 - MODULE SKT FOR PM3 28SSOPAC164018 - MODULE SKT PROMATEII 20SSOP
• Data Converters: -
• Connectivity: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: PIC16F84A-04I/SSR; PIC16F84A-04I/SSR

PICmicro MID-RANGE MCU FAMILY
7.7
DS31007A-page 7-6
Write Verify
Depending on the application, good programming practice may dictate that the value written to
the Data EEPROM be verified
should be used in applications where an EEPROM bit will be stressed near the specification limit.
The Total Endurance disk will help determine your comfort level.
Example 7-3: Write Verify
READ
;
; Is the value written (in W reg) and read (in EEDATA) the same?
;
BCF
:
:
MOVF
BSF
BSF
BCF
SUBWF EEDATA, W
BTFSS STATUS, Z
GOTO
:
:
STATUS, RP0 ; Bank0
EEDATA, W
STATUS, RP0 ; Bank1
EECON1, RD
STATUS, RP0 ; Bank0
WRITE_ERR
(Example
; Any code can go here
;
; Must be in Bank0
; YES, Read the value written
;
; Is difference 0?
; NO, Write error
; YES, Good write
; Continue program
7-3) as the value that was intended to be written. This
1997 Microchip Technology Inc.