Renesas H8S Series Hardware Manual page 868

Section 21 Flash Memory (0.18-µm F-ZTAT Version)
(11) Memory Read
The boot program will return the data in the specified address in response to the memory read
command.
Command H'52
Read size
• Command, H'52 (1 byte): Memory read
• Size (1 byte): Amount of data that represents the area, read address, and read size (fixed at 9)
• Area (one byte)
H'00: User boot MAT
H'01: User MAT
An address error occurs when the area setting is incorrect.
• Read address (4 bytes): Start address to be read from
• Read size (4 bytes): Size of data to be read
• SUM (1 byte): Checksum
Response H'52
Data
SUM
• Response: H'52 (1 byte): Response to memory read
• Read size (4 bytes): Size of data to be read
• Data (n bytes): Data of the read size from the read address
• SUM (1 byte): Checksum
Error Response H'D2
• Error response: H'D2 (1 byte): Error response to memory read
• ERROR (1 byte): Error code
H'11: Checksum error
H'2A: Address error
The read address is not in the MAT.
H'2B: Size error
The read size exceeds the MAT.
(12) User Boot MAT Sum Check
The boot program will return the total amount of bytes of the user boot MAT contents in response
to the user boot MAT sum check command.
Rev. 3.00 Jul. 14, 2005 Page 820 of 986
REJ09B0098-0300
Size Area Read address
Read size
···
ERROR
SUM