Datasheet

Section 21 Flash Memory
R01UH0310EJ0500 Rev. 5.00 Page 1127 of 1384
Sep 25, 2012
H8S/2426, H8S/2426R, H8S/2424 Group
(14) User ROM Blank Check
The boot program will check to see if the whole user ROM area is blank and return the result in
response to a user ROM blank check command.
Command H'4D
• Command, H'4D, (1 byte): Blank check for user ROM
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