Renesas H8S/2100 Series Hardware Manual page 808

Section 24 Flash Memory
(i) Erased Block Information Inquiry
The boot program will return the number of erased blocks and their addresses.
Command H'26
• Command, H'26, (two bytes): Inquiry regarding erased block information
Response H'36
Block start address
...
SUM
• Response, H'36, (one byte): Response to the number of erased blocks and addresses
• Size (two bytes): The number of bytes that represents the number of blocks, block-start
addresses, and block-last addresses.
• Number of blocks (one byte): The number of erased blocks
• Block start address (four bytes): Start address of a block
• Block last Address (four bytes): Last address of a block
There are as many groups of data representing the start and last addresses as there are areas.
• SUM (one byte): Checksum
(j) Programming Unit Inquiry
The boot program will return the programming unit used to program data.
Command H'27
• Command, H'27, (one byte): Inquiry regarding programming unit
Response H'37
• Response, H'37, (one byte): Response to programming unit inquiry
• Size (one byte): The number of bytes that indicate the programming unit, which is fixed to 2
• Programming unit (two bytes): A unit for programming
This is the unit for reception of programming.
• SUM (one byte): Checksum
Rev. 1.00 May 09, 2008 Page 782 of 954
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Size Number of blocks
Size Programming unit
Block last address
SUM