Datasheet

Section 7 ROM
REJ09B0465-0300 Rev. 3.00 Page 199 of 982
Sep 17, 2010
H8S/20103, H8S/20203, H8S/20223, H8S/20115, H8S/20215, H8S/20235 Group
Transfers the erasure-
control program.
Host Boot program
Erasure selection (H'48)
ACK
Performs erasure.
Block erasure (block number)
Block erasure (block number = H'FF)
ACK
ACK
Repeats the steps.
Figure 7.11 Erasure Sequence
(a) User-ROM-Area Programming Selection
In response to a user-ROM-area programming selection command, the boot program transfers the
relevant programming-control program according to which the user ROM area is programmed.
Command H'43
• Command H'43 (1 byte): User-ROM-area programming selection
Response H'06
• Response H'06 (1 byte): Response to a user-ROM-area programming selection command.
The ACK code is returned upon completion of transferring the programming-control program.
Error response
H'C3 ERROR
• Error response H'C3 (1 byte): Error response to a user-ROM-area programming selection
command
• ERROR (1 byte): Error code
H'54: Selection processing error (processing was not completed because of a transfer error)