H8SX1663 datasheet(1003/1158 Pages) RENESAS

1003 / 1158 page

Section 21 Flash Memory (0.18-

µm F-ZTAT Version)

Rev.1.00 Jun. 07, 2006 Page 951 of 1102

REJ09B0294-0100

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.

(e)

Memory Read

The boot program will return the data in the specified address.

Command

H'52

Size

Area

Read address

Read size

SUM

• Command: H'52 (1 byte): Memory read

• Size (1 byte): Amount of data that represents the area, read address, and read size (fixed at 9)

• Area (1 byte)

H'01: User MAT

An address error occurs when the area setting is incorrect.

• Read address (4 bytes): Start address to be read from

• Read size (4 bytes): Size of data to be read

• SUM (1 byte): Checksum

Response

H'52

Read size

Data

···

SUM

• Response: H'52 (1 byte): Response to memory read

• Read size (4 bytes): Size of data to be read

• Data (n bytes): Data for the read size from the read address

• SUM (1 byte): Checksum

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