Datasheet

Section 22 Flash Memory
R01UH0309EJ0500 Rev. 5.00 Page 1197 of 1408
Sep 24, 2012
H8S/2456, H8S/2456R, H8S/2454 Group
Response H'06
• Response, H'06, (1 byte): Response to the user ROM blank check
If all user ROM areas are blank (H'FF), the boot program will return ACK.
Error response H'CD H'52
• Error response, H'CD, (1 byte): Error response to blank check for user ROM
• Error code, H'52, (1 byte): Erasure incomplete error
(15) Data Flash Blank Check
The boot program will check to see if the whole data flash area is blank and return the result in
response to a data flash blank check command.
Command H'62
• Command, H'62, (1 byte): Blank check for data flash
Response H'06
• Response, H'06, (1 byte): Response to the data flash blank check
If all data flash areas are blank (H'FF), the boot program will return ACK.
Error response H'E2 H'52
• Error response, H'E2, (1 byte): Error response to blank check for data flash
• Error code, H'52, (1 byte): Erasure incomplete error
(16) Boot Program Status Inquiry
The boot program will return indications of its present state and error condition in response to a
boot program status inquiry command. This inquiry can be made in the inquiry/selection state or
the programming/erasing state.
Command H'4F
• Command, H'4F, (1 byte): Inquiry regarding boot program states
Response H'5F Size STATUS ERROR SUM
• Response, H'5F, (1 byte): Response to the boot program state inquiry
• Size (1 byte): The number of bytes. This is fixed to 2.
• STATUS (1 byte): State of the boot program