H8S2368 Datasheet, PDF (861/1037 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series

Section 20 Flash Memory (0.18-µm F-ZTAT Version)
Response H'5A Size Checksum of user boot program SUM
• Response, H'5A, (one byte): Response to the sum check of user-boot program
• Size (one byte): The number of bytes that represents the checksum
This is fixed to 4.
• Checksum of user boot program (four bytes): Checksum of user boot MATs
The total of the data is obtained in byte units.
• SUM (one byte): Sum check for data being transmitted
(13) User-Program Sum Check
The boot program will return the byte-by-byte total of the contents of the bytes of the user
program.
Command H'4B
• Command, H'4B, (one byte): Sum check for user program
Response H'5B Size Checksum of user program SUM
• Response, H'5B, (one byte): Response to the sum check of the user program
• Size (one byte): The number of bytes that represents the checksum
This is fixed to 4.
• Checksum of user boot program (four bytes): Checksum of user MATs
The total of the data is obtained in byte units.
• SUM (one byte): Sum check for data being transmitted
(14) User Boot MAT Blank Check
The boot program will check whether or not all user boot MATs are blank and return the result.
Command H'4C
• Command, H'4C, (one byte): Blank check for user boot MAT
Response H'06
• Response, H'06, (one byte): Response to the blank check of user boot MAT
If all user MATs are blank (H'FF), the boot program will return ACK.
Error Response H'CC H'52
• Error Response, H'CC, (one byte): Response to blank check for user boot MAT
• Error Code, H'52, (one byte): Erasure has not been completed.
Rev. 5.00 Aug 02, 2006 page 807 of 980
REJ09B0050-0500