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H8SX1668R Datasheet, PDF (1230/1504 Pages) Renesas Technology Corp – Renesas 32-Bit CISC Microcomputer H8SX Family / H8SX/1600 Series | |||
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Section 25 Flash Memory
(f) Memory Read
The boot program will return the data in the specified address.
Command H'52 Size Area Read address
Read size
SUM
⢠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 (1 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 Read size
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 for the read size from the read address
⢠SUM (1 byte): Checksum
Error Response H'D2 ERROR
⢠Error response: H'D2 (1 byte): Error response to memory read
⢠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.
Rev. 2.00 Sep. 24, 2008 Page 1198 of 1468
REJ09B0412-0200
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