Datasheet

Section 22 Flash Memory
Page 1182 of 1408 R01UH0309EJ0500 Rev. 5.00
Sep 24, 2012
H8S/2456, H8S/2456R, H8S/2454 Group
(g) User ROM Information Inquiry
The boot program will return the number of user ROMs and their addresses.
Command H'25
• Command, H'25, (1 byte): Inquiry regarding user ROM information
Response H'35 Size Number of areas
Area-start address Area-last address
···
SUM
• Response, H'35, (1 byte): Response to the user ROM information inquiry
• Size (1 byte): The number of bytes that represents the number of areas, area-start address, and
area-last address
• Number of areas (1 byte): The number of consecutive user ROM areas
When the user ROM areas are consecutive, the number of areas returned is H'01.
• Area-start address (4 bytes): Start address of the area
• Area-last address (4 bytes): Last address of the area
There are as many groups of data representing the start and last addresses as there are areas.
• SUM (1 byte): Checksum