H8SXSLASH1663R datasheet(1212/1504 Pages) RENESAS

1212 / 1504 page

Section 25 Flash Memory

Rev. 2.00 Sep. 24, 2008 Page 1180 of 1468

REJ09B0412-0200

(b)

Device Selection

The boot program will set the supported device to the specified device code. The program will

return the selected device code in response to the inquiry after this setting has been made.

Command

H'10

Size

Device code

SUM

• Command, H'10, (one byte): Device selection

• Size (one byte): Amount of device-code data

This is fixed at 4.

• Device code (four bytes): Device code (ASCII code) returned in response to the supported

device inquiry

• SUM (one byte): Checksum

Response

H'06

• Response, H'06, (one byte): Response to the device selection command

ACK will be returned when the device code matches.

Error response

H'90

ERROR

• Error response, H'90, (one byte): Error response to the device selection command

ERROR

: (one byte): Error code

H'11: Sum check 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

H'21

• Command, H'21, (one byte): Inquiry regarding clock mode

Response

H'31

Size

Mode

···

SUM

• Response, H'31, (one byte): Response to the clock-mode inquiry

• Size (one byte): Amount of data that represents the modes

• Mode (two bytes): Values of the supported clock modes (i.e. H'01 means clock mode 1.)

H’00: MD_CLK

= 0 (8 to18 MHz input)

H’01: MD_CLK

= 1 (16 MHz input)

• SUM (one byte): Checksum

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