DSPIC30F1010-30I/SP【PDF 21/66 页】IC DSPIC MCU/DSP 6K 28DIP

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dsPIC30F Flash Programming Specification

DS70102K-page 28

2010 Microchip Technology Inc.

8.5.7

ERASEB COMMAND

12 11

Opcode

Length

Reserved

Field

Description

Opcode

0x7

Length

0x2

Reserved 0x0

Select memory to erase:

0x0 = All Code in General Segment

0x1 = All Data EEPROM in General

Segment

0x2 = All Code and Data EEPROM in

General Segment, interrupt vectors and

FGS Configuration register

0x3 = Full Chip Erase

0x4 = All Code and Data EEPROM in

Boot, Secure and General Segments,

and FBS, FSS and FGS Configuration

registers

0x5 = All Code and Data EEPROM in

Secure and General Segments, and

FSS and FGS Configuration registers

0x6 = All Data EEPROM in Boot

Segment

0x7 = All Data EEPROM in Secure

Segment

The ERASEB command performs a Bulk Erase. The MS

field selects the memory to be bulk erased, with options

for erasing Code and/or Data EEPROM in individual

memory segments.

When Full Chip Erase is selected, the following

memory regions are erased:

All code memory (even if code-protected)

All data EEPROM

All code-protect Configuration registers

Only the executive code memory, Unit ID, device ID

and Configuration registers that are not code-protected

remain intact after a Chip Erase.

Expected Response (2 words):

0x1700

0x0002

Note:

A Full Chip Erase cannot be performed in

low-voltage programming systems (VDD

less than 4.5 volts). ERASED and ERASEP

must be used to erase code memory,

executive memory and data memory.

Alternatively, individual Segment Erase

operations may be performed.

8.5.8

ERASED COMMAND

12 11

8 7

Opcode

Length

Num_Rows

Addr_MSB

Addr_LS

Field

Description

Opcode

0x8

Length

0x3

Num_Rows Number of rows to erase (max of 128)

Addr_MSB

MSB of 24-bit base address

Addr_LS

LS 16 bits of 24-bit base address

The ERASED command erases the specified number of

rows of data EEPROM from the specified base

address. The specified base address must be a

multiple of 0x20. Since the data EEPROM is mapped

to program space, a 24-bit base address must be

specified.

After the erase is performed, all targeted bytes of data

EEPROM will contain 0xFF.

Expected Response (2 words):

0x1800

0x0002

Note:

The ERASED command cannot be used to

erase the Configuration registers or

device ID. Code-protect Configuration

registers can only be erased with the

ERASEB command, while the device ID is

read-only.

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