PIC24FV16KM204 Datasheet, PDF (72/336 Pages) Microchip Technology – General Purpose, 16-Bit Flash Microcontroller with XLP Technology Data Sheet

PIC24FV16KM204 FAMILY
EXAMPLE 5-5: INITIATING A PROGRAMMING SEQUENCE – ASSEMBLY LANGUAGE CODE
DISI
MOV
MOV
MOV
MOV
BSET
NOP
NOP
BTSC
BRA
#5
#0x55, W0
W0, NVMKEY
#0xAA, W1
W1, NVMKEY
NVMCON, #WR
NVMCON, #15
$-2
; Block all interrupts
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
;
EXAMPLE 5-6: INITIATING A PROGRAMMING SEQUENCE – ‘C’ LANGUAGE CODE
// C example using MPLAB C30
asm("DISI #5");
// Block all interrupts for next 5 instructions
__builtin_write_NVM();
// Perform unlock sequence and set WR
DS33030A-page 72
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