Renesas H8S/2100 Series Hardware Manual page 820

Section 24 Flash Memory
(f) Memory Read
The boot program will return the data in the specified address.
Command H'52
Read size
• Command: H'52 (one byte): Memory read
• Size (one byte): Amount of data that represents the area, read address, and read size (fixed at
9)
• Area (one byte)
H'01: User MAT
An address error occurs when the area setting is incorrect.
• Read address (four bytes): Start address to be read from
• Read size (four bytes): Size of data to be read
• SUM (one byte): Checksum
Response H'52
Data
SUM
• Response: H'52 (one byte): Response to memory read
• Read size (four bytes): Size of data to be read
• Data (n bytes): Data for the read size from the read address
• SUM (one byte): Checksum
Error Response H'D2
• Error response: H'D2 (one byte): Error response to memory read
• ERROR: (one byte): Error code
H'11: Check sum error
H'2A: Address error
The read address is not in the MAT.
H'2B: Size error
The read size exceeds the MAT.
Rev. 1.00 May 09, 2008 Page 794 of 954
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Size Area Read address
Read size
...
ERROR
SUM