DSPIC30F4012 Microchip Technology Inc., DSPIC30F4012 Datasheet - Page 56

• Manufacturer Part Number: DSPIC30F4012
• Description: Dspic30f4011/4012 Enhanced Flash 16-bit Digital Signal Controller
• Manufacturer: Microchip Technology Inc.

dsPIC30F4011/4012
7.3.2
To write a block of data EEPROM, write to all sixteen
latches first, then set the NVMCON register and
program the block.
EXAMPLE 7-5:
DS70135E-page 54
MOV
MOV
MOV
MOV
TBLWTL
MOV
TBLWTL
MOV
TBLWTL
MOV
TBLWTL
MOV
TBLWTL
MOV
TBLWTL
MOV
TBLWTL
MOV
TBLWTL
MOV
TBLWTL
MOV
TBLWTL
MOV
TBLWTL
MOV
TBLWTL
MOV
TBLWTL
MOV
TBLWTL
MOV
TBLWTL
MOV
TBLWTL
MOV
MOV
DISI
MOV
MOV
MOV
MOV
BSET
NOP
NOP
WRITING A BLOCK OF DATA
EEPROM
#LOW_ADDR_WORD,W0
#HIGH_ADDR_WORD,W1
W1
#data1,W2
W2
#data2,W2
W2
#data3,W2
W2
#data4,W2
W2
#data5,W2
W2
#data6,W2
W2
#data7,W2
W2
#data8,W2
W2
#data9,W2
W2
#data10,W2
W2
#data11,W2
W2
#data12,W2
W2
#data13,W2
W2
#data14,W2
W2
#data15,W2
W2
#data16,W2
W2
#0x400A,W0
W0
#5
#0x55,W0
W0
#0xAA,W1
W1
NVMCON,#WR
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
TBLPAG
[ W0]++
[ W0]++
[ W0]++
[ W0]++
[ W0]++
[ W0]++
[ W0]++
[ W0]++
[ W0]++
[ W0]++
[ W0]++
[ W0]++
[ W0]++
[ W0]++
[ W0]++
[ W0]++
NVMCON
NVMKEY
NVMKEY
DATA EEPROM BLOCK WRITE
; Init pointer
; Get 1st data
; write data
; Get 2nd data
; write data
; Get 3rd data
; write data
; Get 4th data
; write data
; Get 5th data
; write data
; Get 6th data
; write data
; Get 7th data
; write data
; Get 8th data
; write data
; Get 9th data
; write data
; Get 10th data
; write data
; Get 11th data
; write data
; Get 12th data
; write data
; Get 13th data
; write data
; Get 14th data
; write data
; Get 15th data
; write data
; Get 16th data
; write data. The NVMADR captures last table access address.
; Select data EEPROM for multi word op
; Operate Key to allow program operation
; Block all interrupts with priority <7
; for next 5 instructions
; Write the 0x55 key
; Write the 0xAA key
; Start write cycle
© 2007 Microchip Technology Inc.