H8SXSLASH1663 datasheet(993/1158 Pages) RENESAS

993 / 1158 page

Section 21 Flash Memory (0.18-

µm F-ZTAT Version)

Rev.1.00 Jun. 07, 2006 Page 941 of 1102

REJ09B0294-0100

• Block last Address (four bytes): Last address of a block

There are as many groups of data representing the start and last addresses as there are areas.

• SUM (one byte): Checksum

(i)

Programming Unit Inquiry

The boot program will return the programming unit used to program data.

Command

H'27

• Command, H'27, (one byte): Inquiry regarding programming unit

Response

H'37

Size

Programming unit

SUM

• Response, H'37, (one byte): Response to programming unit inquiry

• Size (one byte): The number of bytes that indicate the programming unit, which is fixed to 2

• Programming unit (two bytes): A unit for programming

This is the unit for reception of programming.

• SUM (one byte): Checksum

(j)

New Bit-Rate Selection

The boot program will set a new bit rate and return the new bit rate.

This selection should be sent after sending the clock mode selection command.

Command

H'3F

Size

Bit rate

Input frequency

Number of

multiplication ratios

Multiplication

ratio 1

Multiplication

ratio 2

SUM

• Command, H'3F, (one byte): Selection of new bit rate

• Size (one byte): The number of bytes that represents the bit rate, input frequency, number of

multiplication ratios, and multiplication ratio

• Bit rate (two bytes): New bit rate

One hundredth of the value (e.g. when the value is 19200 bps, it will be 192, which is H'00C0.)

• Input frequency (two bytes): Frequency of the clock input to the boot program

This is valid to the hundredths place and represents the value in MHz multiplied by 100. (E.g.

when the value is 20.00 MHz, it will be 2000, which is H'07D0.)

• Number of multiplication ratios (one byte): The number of multiplication ratios to which the

device can be set.

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