PIC24FJ16GA MICROCHIP [Microchip Technology], PIC24FJ16GA Datasheet - Page 47

• Manufacturer Part Number: PIC24FJ16GA
• Description: 28/44-Pin General Purpose, 16-Bit Flash Microcontrollers
• Manufacturer: MICROCHIP [Microchip Technology]

EXAMPLE 4-2:
EXAMPLE 4-3:
© 2008 Microchip Technology Inc.
; Set up NVMCON for row programming operations
; Set up a pointer to the first program memory location to be written
; program memory selected, and writes enabled
; Perform the TBLWT instructions to write the latches
; 0th_program_word
; 1st_program_word
;
; 63rd_program_word
2nd_program_word
MOV
MOV
MOV
MOV
MOV
MOV
MOV
TBLWTL
TBLWTH
MOV
MOV
TBLWTL
TBLWTH
MOV
MOV
TBLWTL
TBLWTH
•
•
•
MOV
MOV
TBLWTL
TBLWTH
DISI
MOV
MOV
MOV
MOV
BSET
NOP
NOP
BTSC
BRA
#5
#0x55, W0
W0, NVMKEY
#0xAA, W1
W1, NVMKEY
NVMCON, #WR
NVMCON, #15
$-2
#0x4001, W0
W0, NVMCON
#0x0000, W0
W0, TBLPAG
#0x6000, W0
#LOW_WORD_0, W2
#HIGH_BYTE_0, W3
W2, [W0]
W3, [W0++]
#LOW_WORD_1, W2
#HIGH_BYTE_1, W3
W2, [W0]
W3, [W0++]
#LOW_WORD_2, W2
#HIGH_BYTE_2, W3
W2, [W0]
W3, [W0++]
#LOW_WORD_31, W2
#HIGH_BYTE_31, W3
W2, [W0]
W3, [W0]
LOADING THE WRITE BUFFERS
INITIATING A PROGRAMMING SEQUENCE
PIC24FJ64GA004 FAMILY
Preliminary
; Block all interrupts with priority <7
; for next 5 instructions
; Write the 55 key
;
; Write the AA key
; Start the erase sequence
; 2 NOPs required after setting WR
;
; Wait for the sequence to be completed
;
;
; Initialize NVMCON
;
; Initialize PM Page Boundary SFR
; An example program memory address
;
;
; Write PM low word into program latch
; Write PM high byte into program latch
;
;
; Write PM low word into program latch
; Write PM high byte into program latch
;
;
; Write PM low word into program latch
; Write PM high byte into program latch
;
;
; Write PM low word into program latch
; Write PM high byte into program latch
DS39881C-page 45