Datasheet
Section 7 ROM
Page 186 of 982 REJ09B0465-0300 Rev. 3.00
Sep 17, 2010
H8S/20103, H8S/20203, H8S/20223, H8S/20115, H8S/20215, H8S/20235 Group
(g) Programmable ROM Information Inquiry
In response to a programmable ROM information inquiry command, the boot program returns the
number of programmable ROM areas and their addresses.
Command H'25
• Command H'25 (1 byte): Programmable ROM information inquiry
Response H'35 Size Number
of areas
Start address of an area End address of an area
…
SUM
• Response H'35 (1 byte): Response to a programmable ROM information inquiry command
• Size (1 byte): The total size of the fields for the number of areas, start addresses of areas, and
end addresses of areas.
• Number of areas (1 byte): The number of consecutive programmable ROM areas
(H'01 is returned when the programmable ROM areas are continuous.)
• Start address of an area (4 bytes): Address where the area starts
• End address of an area (4 bytes): Address where the area ends
The number of address pairs is the same as the number of areas.
• SUM (1 byte): Checksum
(h) Erasure-Block Information Inquiry
In response to an erasure-block information inquiry command, the boot program returns the
number of erasure blocks and their addresses.
Command H'26
• Command H'26 (1 byte): Erasure-block information inquiry
Response H'36 Size Number of blocks
Start address of the block End address of the block
…
SUM