HD6412373R RENESAS [Renesas Technology Corp], HD6412373R Datasheet - Page 1001

• Manufacturer Part Number: HD6412373R
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

(f) Operating Clock Frequency Inquiry
The boot program will return the number of operating clock frequencies, and the maximum and
minimum values.
Command
• Command, H'23, (one byte): Inquiry regarding operating clock frequencies
Response
• Response, H'33, (one byte): Response to operating clock frequency inquiry
• Size (one byte): The number of bytes that represents the minimum values, maximum values,
• Number of operating clock frequencies (one byte): The number of supported operating clock
• Minimum value of operating clock frequency (two bytes): The minimum value of the
• Maximum value (two bytes): Maximum value among the multiplied or divided clock
• SUM (one byte): Checksum
and the number of frequencies.
frequency types
(e.g. when there are two operating clock frequency types, which are the main and peripheral
clocks, the number of types will be H'02.)
multiplied or divided clock frequency.
The minimum and maximum values represent the values in MHz, valid to the hundredths place
of MHz, and multiplied by 100. (e.g. when the value is 64 MHz, it will be D'6400 and H'1900.)
frequencies.
There are as many pairs of minimum and maximum values as there are operating clock
frequencies.
H'23
H'33
Minimum value of
operating clock frequency
···
SUM
Size
Number of operating
clock frequencies
Maximum value of operating clock
frequency
Section 21 Flash Memory (0.18-μm F-ZTAT Version)
Rev.7.00 Mar. 18, 2009 page 933 of 1136
REJ09B0109-0700