M16CSLASH62 datasheet(273/621 Pages) RENESAS

273 / 621 page

Mitsubishi microcomputers

M16C / 62 Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Appendix Standard Serial I/O Mode (Flash Memory Version)

258

Page 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) Send the “FF16” command code in the 1st byte of the transmission.

(2) Send addresses A8 to A15 and A16 to A23 in the 2nd and 3rd bytes of the transmission respec-

tively.

(3) From the 4th byte onward, data (D0–D7) for the page (256 bytes) specified with addresses A8 to

A23 will be output sequentially from the smallest address first in sync with the rise of the clock.

data0

data255

CLK1

RxD1

TxD1

RTS1(BUSY)

A8 to

A15

A16 to

A23

FF16

(M16C reception data)

(M16C transmit data)

SRD

output

SRD1

output

CLK1

RxD1

TxD1

RTS1(BUSY)

7016

(M16C reception data)

(M16C transmit data)

Figure 1.31.3. Timing for page read

Read Status Register Command

This command reads status information. When the “7016” command code is sent in the 1st byte of the

transmission, the contents of the status register (SRD) specified in the 2nd byte of the transmission

and the contents of status register 1 (SRD1) specified in the 3rd byte of the transmission are read.

Figure 1.31.4. Timing for reading the status register

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