r4f2426 Renesas Electronics Corporation., r4f2426 Datasheet - Page 1104

• Manufacturer Part Number: r4f2426
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

Section 21 Flash Memory
(h) Erased Block Information Inquiry
The boot program will return the number of erased blocks and their addresses.
• Command, H'26, (one byte): Inquiry regarding erased block information
• 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
• 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
• SUM (one byte): Checksum
(i)
The boot program will return the programming unit used to program data.
• Command, H'27, (one byte): Inquiry regarding programming unit
• 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
• SUM (one byte): Checksum
Rev. 1.00 Sep. 19, 2008 Page 1076 of 1270
REJ09B0466-0100
Command
Response
Command
Response
addresses, and block-last addresses.
There are as many groups of data representing the start and last addresses as there are blocks.
This is the unit for reception of programming data.
Programming Unit Inquiry
H'26
H'36
Block-start address
···
SUM
H'27
H'37
Size
Size
Number of blocks
Programming unit
SUM
Block-last address