D12320VF25V Datasheet, PDF (810/1146 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 17 ROM
• Block Number (1 byte): H'FF
Stop code for erasure
• SUM (1 byte): Checksum
Response H'06
• Response, H'06, (1 byte): Response to end of erasure (ACK)
When erasure is to be performed after the block number H'FF has been sent, the procedure
should be executed from the erasure selection command.
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
H'D2 ERROR
Response
• Error response: H'D2 (1 byte): Error response to memory read
• ERROR: (1 byte): Error code
H'11: Sum check error
Rev.7.00 Feb. 14, 2007 page 776 of 1108
REJ09B0089-0700