Renesas H8S Series Hardware Manual page 851

(b) Device Selection
The boot program will set the specified supported device in response to the device selection
command. The program will return information on the selected device in response to the inquiry
after this setting has been made.
Command H'10
• Command, H'10 (1 byte): Device selection
• Size (1 byte): The number of characters in the device code. Fixed at 2.
• Device code (4 bytes): Device code (ASCII code) returned in response to the supported device
inquiry
• SUM (1 byte): Checksum
Response H'06
• Response, H'06 (1 byte): Response to the device selection command.
The boot program will return ACK when the device code matches.
Error Response H'90
• Error response, H'90 (1 byte): Error response to the device selection command
ERROR (1 byte): Error code
H'11: Checksum error
H'21: Device code error, that is, the device code does not match
(c) Clock Mode Inquiry
The boot program will return the supported clock modes in response to the clock mode inquiry
command.
Command H'21
• Command, H'21 (1 byte): Inquiry regarding clock mode
Response H'31
• Response, H'31 (1 byte): Response to the clock mode inquiry
• Size (1 byte): Amount of data that represents the number of modes and modes
• Number of clock modes (1 byte): The number of supported clock modes.
H'00 indicates no clock mode or the device allows the clock mode to be read.
• Mode (1 byte): Values of the supported clock modes (i.e. H'01 means clock mode 1.)
• SUM (1 byte): Checksum
Size Device code
ERROR
Size Number of modes
Section 21 Flash Memory (0.18-µm F-ZTAT Version)
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Rev. 3.00 Jul. 14, 2005 Page 803 of 986
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REJ09B0098-0300