PIC16F1933_11 Datasheet, PDF (113/430 Pages) Microchip Technology – 28-Pin Flash-Based, 8-Bit CMOS Microcontrollers LCD Driver and nanoWatt XLP Technology

11.6 Write Verify
Depending on the application, good programming
practice may dictate that the value written to the data
EEPROM or program memory should be verified (see
Example 11-6) to the desired value to be written.
Example 11-6 shows how to verify a write to EEPROM.
EXAMPLE 11-6: EEPROM WRITE VERIFY
BANKSEL EEDATL
;
MOVF EEDATL, W ;EEDATL not changed
;from previous write
BSF
EECON1, RD ;YES, Read the
;value written
XORWF EEDATL, W ;
BTFSS STATUS, Z ;Is data the same
GOTO WRITE_ERR ;No, handle error
:
;Yes, continue
PIC16(L)F1933
 2011 Microchip Technology Inc.
Preliminary
DS41575A-page 113