SH7125_08 Datasheet, PDF(672/774 Page) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family

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SH7125_08 Datasheet, PDF (672/774 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family

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Section 17 Flash Memory

â¢ Sum checking of the user MAT

In response to the command for sum checking of the user MAT, the boot program adds all bytes of

data in the user MAT and returns the result.

Command H'4B

ï£§ Command H'4B (1 byte): Sum checking of the user MAT

Response

H'5B

Size

Checksum for the MAT

SUM

ï£§ Response H'5B (1 byte): Response to sum checking of the user MAT

ï£§ Size (1 byte): The number of characters in the checksum for the MAT (fixed to 4)

ï£§ Checksum for the MAT (4 bytes): Result of checksum calculation for the user MAT:

the total of all data in the MAT, in byte units.

ï£§ SUM (1 byte): Checksum (for the transmitted data)

â¢ Blank checking of the user MAT

In response to the command for blank checking of the user MAT, the boot program checks to see

if the whole of the user MAT is blank; the value returned indicates the result.

Command H'4D

ï£§ Command H'4D (1 byte): Blank checking of the user MAT

Response

H'06

ï£§ Response H'06 (1 byte): Response to blank checking of the user MAT

The ACK code is returned when the whole area is blank (all bytes are H'FF).

Error

response

H'CD

H'52

ï£§ Error response H'CD (1 byte): Error response to blank checking of the user MAT

ï£§ Error code H'52 (1 byte): Non-erased error

Rev. 4.00 Jul. 25, 2008 Page 652 of 750

REJ09B0243-0400

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