Figure 20.24 Erasure Sequence - Renesas H8S/2437 Hardware Manual

Repeat
(a) Erasure Selection
The boot program will transfer the erasure program. User MAT data is erased by the transferred
erasure program.
Command H'48
• Command, H'48, (one byte): Erasure selection
Response H'06
• Response, H'06, (one byte): Response for erasure selection
After the erasure program has been transferred, ACK will be returned.
Error Response H'C8
• Error response, H'C8, (one byte): Error response to erasure selection
• ERROR: (one byte): Error code
H'54: Selection processing error (transfer error occurs and processing is not
completed)
(b) Block Erasure
The boot program will erase the contents of the specified block.
Command H'58
• Command, H'58, (one byte): Erasure
• Size (one byte): The number of bytes that represents the erasure block number
This is fixed to 1.
• Block number (one byte): Number of the block to be erased
• SUM (one byte): Checksum
Rev. 1.00, 09/03, page 602 of 704
Host
Preparation for erasure (H'48)
Erasure (Erasure block number)

Figure 20.24 Erasure Sequence

ERROR
Size Block number
ACK
ACK
Erasure (H'FF)
ACK
SUM
Boot program
Transfer of erasure
program
Erasure