Datasheet

 2010-2013 Microchip Technology Inc. DS39881E-page 51
PIC24FJ64GA004 FAMILY
EXAMPLE 5-2: LOADING THE WRITE BUFFERS
EXAMPLE 5-3: INITIATING A PROGRAMMING SEQUENCE
; Set up NVMCON for row programming operations
MOV #0x4001, W0 ;
MOV W0, NVMCON ; Initialize NVMCON
; Set up a pointer to the first program memory location to be written
; program memory selected, and writes enabled
MOV #0x0000, W0 ;
MOV W0, TBLPAG ; Initialize PM Page Boundary SFR
MOV #0x6000, W0 ; An example program memory address
; Perform the TBLWT instructions to write the latches
; 0th_program_word
MOV #LOW_WORD_0, W2 ;
MOV #HIGH_BYTE_0, W3 ;
TBLWTL W2, [W0] ; Write PM low word into program latch
TBLWTH W3, [W0++] ; Write PM high byte into program latch
; 1st_program_word
MOV #LOW_WORD_1, W2 ;
MOV #HIGH_BYTE_1, W3 ;
TBLWTL W2, [W0] ; Write PM low word into program latch
TBLWTH W3, [W0++] ; Write PM high byte into program latch
; 2nd_program_word
MOV #LOW_WORD_2, W2 ;
MOV #HIGH_BYTE_2, W3 ;
TBLWTL W2,
[W0] ; Write PM low word into program latch
TBLWTH W3,
[W0++] ; Write PM high byte into program latch
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; 63rd_program_word
MOV #LOW_WORD_31, W2 ;
MOV #HIGH_BYTE_31, W3 ;
TBLWTL W2,
[W0] ; Write PM low word into program latch
TBLWTH W3,
[W0] ; Write PM high byte into program latch
DISI #5 ; Block all interrupts with priority <7
; for next 5 instructions
MOV #0x55, W0
MOV W0, NVMKEY ; Write the 55 key
MOV #0xAA, W1 ;
MOV W1, NVMKEY ; Write the AA key
BSET NVMCON, #WR ; Start the erase sequence
NOP ; 2 NOPs required after setting WR
NOP ;
BTSC NVMCON, #15 ; Wait for the sequence to be completed
BRA $-2 ;