ADuC7023BCBZ62I-R7 datasheet(40/96 Pages) AD

40 / 96 page

ADuC7023

Data Sheet

| Page 40 of 96

Code

Command

Description

0x0D

Reserved

Reserved.

0x0E

Reserved

Reserved.

0x0F

Ping

No operation; interrupt generated.

The FEECON register always reads 0x07 immediately after execution of any of these commands.

FEEDAT Register

Name:

FEEDAT

Address:

0xFFFFF80C

Default value: 0xXXXX

Access:

Read/write

Function:

FEEDAT is a 16-bit data register.

FEEADR Register

Name:

FEEADR

Address:

0xFFFFF810

Default value: 0x0000

Access:

Read/write

Function:

FEEADR is another 16-bit address register.

FEESIGN Register

Name:

FEESIGN

Address:

0xFFFFF818

Default value: 0xFFFFFF

Access:

Read

Function:

FEESIGN is a 24-bit code signature.

FEEPRO Register

Name:

FEEPRO

Address:

0xFFFFF81C

Default value: 0x00000000

Access:

Read/write

Function:

FEEPRO MMR provides protection following a

subsequent reset of the MMR. It requires a

software key (see Table 34).

FEEHIDE Register

Name:

FEEHIDE

Address:

0xFFFFF820

Default value: 0xFFFFFFFF

Access:

Read/write

Function:

FEEHIDE MMR provides immediate

protection. It does not require any software

key. The protection settings in FEEHIDE are

cleared by a reset (see Table 34).

Table 34. FEEPRO and FEEHIDE MMR Bit Designations

Bit

Description

Read protection.

This bit is cleared by the user to protect the code

This bit is set by the user to allow reading the code.

30 to 0

Write protection for Page 123 to Page 120, Page 119 to

Page 116, and Page 0 to Page 3.

This bit is cleared by the user to protect the pages in

writing.

This bit is set by the user to allow writing the pages.

Command Sequence for Executing a Mass Erase

FEEDAT = 0x3CFF;

FEEADR = 0xFFC3;

FEEMOD = FEEMOD|0x8;

//Erase key enable

FEECON = 0x06;

//Mass erase

command

Rev. E

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