Information

© 2010 Microchip Technology Inc. DS70152H-page 51
dsPIC33F/PIC24H PROGRAMMING SPECIFICATION
Step 7: Load W0:W5 with the next 4 words of packed programming executive code and initialize W6 for
programming. Programming starts from the base of executive memory (0x800000) using W6 as a read
pointer and W7 as a write pointer.
0000
0000
0000
0000
0000
0000
2<LSW0>0
2<MSB1:MSB0>1
2<LSW1>2
2<LSW2>3
2<MSB3:MSB2>4
2<LSW3>5
MOV #<LSW0>, W0
MOV #<MSB1:MSB0>, W1
MOV #<LSW1>, W2
MOV #<LSW2>, W3
MOV #<MSB3:MSB2>, W4
MOV #<LSW3>, W5
Step 8: Set the read pointer (W6) and load the (next four write) latches.
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
EB0300
000000
BB0BB6
000000
000000
BBDBB6
000000
000000
BBEBB6
000000
000000
BB1BB6
000000
000000
BB0BB6
000000
000000
BBDBB6
000000
000000
BBEBB6
000000
000000
BB1BB6
000000
000000
CLR W6
NOP
TBLWTL [W6++], [W7]
NOP
NOP
TBLWTH.B[W6++], [W7++]
NOP
NOP
TBLWTH.B[W6++], [++W7]
NOP
NOP
TBLWTL [W6++], [W7++]
NOP
NOP
TBLWTL [W6++], [W7]
NOP
NOP
TBLWTH.B[W6++], [W7++]
NOP
NOP
TBLWTH.B[W6++], [++W7]
NOP
NOP
TBLWTL [W6++], [W7++]
NOP
NOP
Step 9: Repeat Steps 7-8 sixteen times to load the write latches for the 64 instructions.
Step 10: Initiate the programming cycle.
0000
0000
0000
0000
0000
A8E761
000000
000000
000000
000000
BSET NVMCON, #15
NOP
NOP
NOP
NOP
TABLE 6-1: PROGRAMMING THE PROGRAMMING EXECUTIVE (CONTINUED)
Command
(Binary)
Data
(Hex)
Description