7643 datasheet(109/424 Pages) RENESAS

109 / 424 page

Rev.2.00

Aug 28, 2006

page 92 of 103

REJ09B0133-0200

OVERVIEW

FLASH MEMORY MODE

7643 Group

qVersion Information Output Command

This command outputs the version information of the control pro-

gram stored in the Boot ROM area. Execute the version

information output command as explained here following.

(1) Transfer the “FB16” command code with the 1st byte.

(2) The version information will be output from the 2nd byte on-

ward.

This data is composed of 8 ASCII code characters.

Fig. 88 Timing for version information output

FB16

‘X’

‘V’‘E’‘R’

SCLK

SRXD

STXD

SRDY (BUSY)

qBoot ROM Area Output Command

This command reads the control program stored in the Boot ROM

area in page (256 bytes) unit. Execute the Boot ROM area output

command as explained here following.

(1) Transfer the “FC16” command code with the 1st byte.

(2) Transfer addresses AB8 to AB15 and AB16 to AB23 with the 2nd

and 3rd bytes respectively.

(3) From the 4th byte onward, data (DB0 to DB7) for the page (256

bytes) specified with addresses AB8 to AB23 will be output se-

quentially from the smallest address first synchronized with the

fall of the clock.

Fig. 89 Timing for Boot ROM area output

FC16

AB8 to

AB15

AB16

AB23

data0data255

SCLK

SRXD

STXD

SRDY(BUSY)

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