Renesas H8S/2100 Series, Hardware Manual

Page: 852 / 1024

Section 24 Flash Memory
Rev. 1.00 Apr. 28, 2008 Page 826 of 994
REJ09B0452-0100
(f) Memory Read
The boot program will return the data in the specified address.
Command H'52 Size Area Read address
Read size SUM
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Command: H'52 (1 byte): Memory read
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Size (1 byte): Amount of data that represents the area, read address, and read size (fixed at 9)
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Area (1 byte)
H'01: User MAT
An address error occurs when the area setting is incorrect.
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Read address (4 bytes): Start address to be read from
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Read size (4 bytes): Size of data to be read
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SUM (1 byte): Checksum
Response H'52 Read size
Data
…
SUM
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Response: H'52 (1 byte): Response to memory read
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Read size (4 bytes): Size of data to be read
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Data (n bytes): Data for the read size from the read address
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SUM (1 byte): Checksum
Error Response H'D2 ERROR
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Error response: H'D2 (1 byte): Error response to memory read
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ERROR: (1 byte): Error code
H'11: Sum check error
H'2A: Address error
The read address is not in the MAT.
H'2B: Size error
The read size exceeds the MAT.