PIC16LF1459T-E/SL View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16LF1459T-E/SL

14/20-Pin Flash, 8-Bit USB Microcontrollers with XLP Technology

Microchip Technology 

PIC16(L)F1454/5/9

EXAMPLE 11-2: ERASING ONE ROW OF PROGRAM MEMORY

; This row erase routine assumes the following:

; 1. A valid address within the erase row is loaded in ADDRH:ADDRL

; 2. ADDRH and ADDRL are located in shared data memory 0x70 - 0x7F (common RAM)

BCF

BANKSEL

MOVF

MOVWF

MOVF

MOVWF

BCF

BSF

BSF

MOVLW

MOVWF

MOVLW

MOVWF

BSF

NOP

NOP

BCF

BSF

INTCON,GIE

PMADRL

ADDRL,W

PMADRL

ADDRH,W

PMADRH

PMCON1,CFGS

PMCON1,FREE

PMCON1,WREN

55h

PMCON2

0AAh

PMCON2

PMCON1,WR

PMCON1,WREN

INTCON,GIE

; Disable ints so required sequences will execute properly

; Load lower 8 bits of erase address boundary

; Load upper 6 bits of erase address boundary

; Not configuration space

; Specify an erase operation

; Enable writes

; Start of required sequence to initiate erase

; Write 55h

;

; Write AAh

; Set WR bit to begin erase

; NOP instructions are forced as processor starts

; row erase of program memory.

;

; The processor stalls until the erase process is complete

; after erase processor continues with 3rd instruction

; Disable writes

; Enable interrupts

 2012 Microchip Technology Inc.

Preliminary

DS41639A-page 117

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