r4f2426 Renesas Electronics Corporation., r4f2426 Datasheet - Page 1100

• Manufacturer Part Number: r4f2426
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

Section 21 Flash Memory
(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, (one byte): Selection of clock mode
• Size (one byte): Amount of data that represents the modes
• Mode (one byte): A clock mode returned in reply to the supported clock mode inquiry.
• SUM (one byte): Checksum
• Response, H'06, (one byte): Response to the clock mode selection command
• Error response, H'91, (one byte): Error response to the clock mode selection command
• ERROR, (one byte): Error code
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.
Rev. 1.00 Sep. 19, 2008 Page 1072 of 1270
REJ09B0466-0100
Command
Response
Error Response
This is fixed at 1.
ACK will be returned when the clock mode matches.
H'11: Checksum error
H'22: Clock mode error, that is, the clock mode does not match.
H'11
H'06
H'91
Size
ERROR
Mode
SUM