H8SXSLASH1663R datasheet(1229/1504 Pages) RENESAS

1229 / 1504 page

Section 25 Flash Memory

Rev. 2.00 Sep. 24, 2008 Page 1197 of 1468

REJ09B0412-0200

(e)

Block Erasure

The boot program will erase the contents of the specified block.

Command

H'58

Size

Block number

SUM

• Command, H'58, (one byte): Erasure

• Size (one byte): The number of bytes that represents the erase block number

This is fixed to 1.

• Block number (one byte): Number of the block to be erased

• SUM (one byte): Checksum

Response

H'06

• Response, H'06, (one byte): Response to Erasure

After erasure has been completed, the boot program will return ACK.

Error Response

H'D8

ERROR

• Error Response, H'D8, (one byte): Response to Erasure

• ERROR (one byte): Error code

H'11: Sum check error

H'29: Block number error

Block number is incorrect.

H'51: Erasure error

An error has occurred during erasure.

On receiving block number H'FF, the boot program will stop erasure and wait for a selection

command.

Command

H'58

Size

Block number

SUM

• Command, H'58, (one byte): Erasure

• Size, (one byte): The number of bytes that represents the block number

This is fixed to 1.

• Block number (one byte): H'FF

Stop code for erasure

• SUM (one byte): Checksum

Response

H'06

• Response, H'06, (one byte): Response to end of erasure (ACK)

When erasure is to be performed after the block number H'FF has been sent, the procedure

should be executed from the erasure selection command.

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