Datasheet

Section 7 ROM
REJ09B0465-0300 Rev. 3.00 Page 195 of 982
Sep 17, 2010
H8S/20103, H8S/20203, H8S/20223, H8S/20115, H8S/20215, H8S/20235 Group
• ID (16 bytes): The ID value is in the eight lower-order bytes. The value of the eight higher-
order bytes is H'FF.
For example, when the ID is the eight-byte value H'55112233, H'44556677, the value
H'FFFFFFFF, H'FFFFFFFF, H'55112233, H'44556677 will match the ID.
When the ID is the six-byte value H'55112233, H'4455, the value H'FFFFFFFF, H'FFFFFFFF,
H'55112233, H'4455FFFF will match the ID.
• SUM (1 byte): Checksum
Response H'06
• Response H'06 (1 byte): Response to an ID checking command (with ID checking)
The ACK code is returned if ID checking is successful.
Error response
H'E0 H'xx
• Error response H'E0 (1 byte): Error response to an ID checking command
• ERROR (1 byte): Error code
H'11: Checksum error
H'61: ID code mismatch error
H'63: Erasure error when ID code mismatch occurs.
(8) Checksum Errors
When the host detects an abnormal checksum value, the host is capable of resending the same
command if this is judged to be appropriate. The boot program does not have a function for
resending.
When the boot program determines that the value of a sum check was incorrect, it returns a
checksum error.
Error response
H'xx H'11
• Response H'xx (1 byte): Error response is the same as the command byte except that bit 7 is set
to 1.
For example, the error response corresponding to the device selection command H'10 is H'90.
• Error code H'11 (1 byte): Checksum error