DSPIC30F1010-30I/SP【PDF 36/66 页】IC DSPIC MCU/DSP 6K 28DIP

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2010 Microchip Technology Inc.

DS70102K-page 41

dsPIC30F Flash Programming Specification

Step 6: Update the row address stored in NVMADRU:NVMADR. When W6 rolls over to 0x0, NVMADRU must be

incremented.

0000

430307

AF0042

EC2764

883B16

ADD

W6, W7, W6

BTSC

SR, #C

INC

NVMADRU

MOV

W6, NVMADR

Step 7: Reset device internal PC.

0000

040100

000000

GOTO 0x100

NOP

Step 8: Repeat Steps 3-7 until all rows of code memory are erased.

Step 9: Initialize NVMADR and NVMADRU to erase executive memory and initialize W7 for row address updates.

0000

EB0300

883B16

200807

883B27

200407

CLR

MOV

W6, NVMADR

MOV

#0x80, W7

MOV

W7, NVMADRU

MOV

#0x40, W7

Step 10: Set NVMCON to erase 1 row of executive memory.

0000

24071A

883B0A

MOV

#0x4071, W10

MOV

W10, NVMCON

Step 11: Unlock the NVMCON to erase 1 row of executive memory.

0000

200558

883B38

200AA9

883B39

MOV

#0x55, W8

MOV

W8, NVMKEY

MOV

#0xAA, W9

MOV

W9, NVMKEY

Step 12: Initiate the erase cycle.

0000

—

0000

A8E761

000000

—

000000

A9E761

000000

BSET NVMCON, #WR

NOP

Externally time ‘P13a’ ms (see Section 13.0 “AC/DC Characteristics and

Timing Requirements”)

NOP

BCLR NVMCON, #WR

NOP

Step 13: Update the row address stored in NVMADR.

0000

430307

883B16

ADD

W6, W7, W6

MOV

W6, NVMADR

Step 14: Reset device internal PC.

0000

040100

000000

GOTO 0x100

NOP

Step 15: Repeat Steps 10-14 until all 24 rows of executive memory are erased.

Step 16: Initialize NVMADR and NVMADRU to erase data memory and initialize W7 for row address updates.

0000

2XXXX6

883B16

2007F6

883B16

200207

MOV

#<lower 16-bits of starting Data EEPROM address>, W6

MOV

W6, NVMADR

MOV

#0x7F, W6

MOV

W6, NVMADRU

MOV

#0x20, W7

Step 17: Set NVMCON to erase 1 row of data memory.

0000

24075A

883B0A

MOV

#0x4075, W10

MOV

W10, NVMCON

TABLE 11-5:

SERIAL INSTRUCTION EXECUTION FOR ERASING PROGRAM MEMORY

(EITHER IN LOW-VOLTAGE OR NORMAL-VOLTAGE SYSTEMS) (CONTINUED)

Command

(Binary)

Data

(Hexadecimal)

Description

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