H8SXSLASH1663 datasheet(994/1158 Pages) RENESAS

994 / 1158 page

Section 21 Flash Memory (0.18-

µm F-ZTAT Version)

Rev.1.00 Jun. 07, 2006 Page 942 of 1102

REJ09B0294-0100

• Multiplication ratio 1 (one byte): The value of multiplication or division ratios for the main

operating frequency

Multiplication ratio (one byte): The value of the multiplication ratio (e.g. when the clock

frequency is multiplied by four, the multiplication ratio will be H'04.)

Division ratio: The inverse of the division ratio, as a negative number (e.g. when the clock

frequency is divided by two, the value of division ratio will be H'FE. H'FE = D'-2)

• Multiplication ratio 2 (one byte): The value of multiplication or division ratios for the

peripheral frequency

Multiplication ratio (one byte): The value of the multiplication ratio (e.g. when the clock

frequency is multiplied by four, the multiplication ratio will be H'04.)

(Division ratio: The inverse of the division ratio, as a negative number (E.g. when the clock is

divided by two, the value of division ratio will be H'FE. H'FE = D'-2)

• SUM (one byte): Checksum

Response

H'06

• Response, H'06, (one byte): Response to selection of a new bit rate

When it is possible to set the bit rate, the response will be ACK.

Error Response

H'BF

ERROR

• Error response, H'BF, (one byte): Error response to selection of new bit rate

• ERROR: (one byte): Error code

H'11:

Sum checking error

H'24:

Bit-rate selection error

The rate is not available.

H'25:

Error in input frequency

This input frequency is not within the specified range.

H'26:

Multiplication-ratio error

The ratio does not match an available ratio.

H'27:

Operating frequency error

The frequency is not within the specified range.

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