M38K09RFS datasheet(115/328 Pages) RENESAS

115 / 328 page

FUNCTIONAL DESCRIPTION

Rev.2.00

Oct 05, 2006

page 98 of 112

38K0 Group

REJ09B0337-0200

HARDWARE

qRead Status Register Command

This command reads status information. When the “7016” com-

mand code is transferred with the 1st byte, the contents of the

status register (SRD) with the 2nd byte and the contents of status

The contents of software commands are explained as follows.

qPage Read Command

This command reads the specified page (256 bytes) in the flash

memory sequentially one byte at a time. Execute the page read

command as explained here following.

(1) Transfer the “FF16” command code with the 1st byte.

(2) Transfer addresses A8 to A15 and A16 to A23 with the 2nd and

3rd bytes respectively.

(3) From the 4th byte onward, data (D0 to D7) for the page (256

bytes) specified with addresses A8 to A23 will be output se-

quentially from the smallest address first synchronized with the

fall of the clock.

data0

data255

A8 to

A15

A16 to

A23

FF16

SCLK

RxD

TxD

SRDY (BUSY)

SRD

output

SRD1

output

SCLK

RxD

TxD

SRDY (BUSY)

7016

Fig. 125 Timing for page read

Fig. 126 Timing for reading status register

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