DSPIC33FJ128GP706AI View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

DSPIC33FJ128GP706AI

High-Performance, 16-Bit Digital Signal Controllers

Microchip Technology 

dsPIC33FJXXXGPX06A/X08A/X10A

EXAMPLE 5-2: LOADING THE WRITE BUFFERS

; 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

•

•

; 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

EXAMPLE 5-3: INITIATING A PROGRAMMING SEQUENCE

DISI

MOV

MOV

MOV

MOV

BSET

NOP

NOP

#5

#0x55, W0

W0, NVMKEY

#0xAA, W1

W1, NVMKEY

NVMCON, #WR

; Block all interrupts with priority <7

; for next 5 instructions

; Write the 55 key

;

; Write the AA key

; Start the erase sequence

; Insert two NOPs after the

; erase command is asserted

DS70593C-page 86

© 2011 Microchip Technology Inc.

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