Datasheet

Section 22 Flash Memory
R01UH0309EJ0500 Rev. 5.00 Page 1179 of 1408
Sep 24, 2012
H8S/2456, H8S/2456R, H8S/2454 Group
(d) Clock Mode Selection
The boot program will set the specified clock mode. The program will return the selected clock-
mode information after this setting has been made.
The clock-mode selection command should be sent after the device-selection commands.
Command H'11 Size Mode SUM
• Command, H'11, (1 byte): Selection of clock mode
• Size (1 byte): Amount of data that represents the modes
This is fixed at 1.
• Mode (1 byte): A clock mode returned in reply to the supported clock mode inquiry.
• SUM (1 byte): Checksum
Response H'06
• Response, H'06, (1 byte): Response to the clock mode selection command
ACK will be returned when the clock mode matches.
Error Response H'91 ERROR
• Error response, H'91, (1 byte): Error response to the clock mode selection command
• ERROR, (1 byte): Error code
H'11: Sum check error
H'22: Clock mode mismatch error, that is, the clock mode does not match.
Even if the clock mode numbers are H'00 and H'01 by a clock mode inquiry, the clock mode must
be selected using these respective values.