Renesas H8S/2319 series Hardware Manual page 771

(9) Erased Block Information Inquiry
The boot program will return the number of erased blocks and their addresses.
Command H'26
• Command, H'26, (1 byte): Inquiry regarding erased block information
Response H'36
Block Start Address
···
SUM
• Response, H'36, (1 byte): Response to the number of erased blocks and addresses
• Size (1 byte): The number of bytes that represents the number of blocks, block-start addresses,
and block-last addresses.
• A number of blocks (1 byte): Number of erased blocks in flash memory
• Block Start Address (4 bytes) : Start address of a block
• Block Last Address (4 bytes) : Last address of a block
There are as many groups of data representing the start and last addresses as there are blocks.
• SUM: Checksum
(10) Programming Unit Inquiry
The boot program will return the programming unit used to program data.
Command H'27
• Command, H'27, (1 byte): Inquiry regarding programming unit
Response H'37
• Response, H'37, (1 byte): Response to programming unit inquiry
• Size (1 byte): The number of bytes that indicate the programming unit, which is fixed to 2
• Programming unit (2 bytes): A unit for programming
This is the unit for reception of programming.
• SUM (1 byte): Checksum
Size A number of blocks
Size Programming unit
Block Last Address
SUM
Rev. 5.00, 12/03, page 741 of 1088