M16CSLASH62 datasheet(275/621 Pages) RENESAS

275 / 621 page

Mitsubishi microcomputers

M16C / 62 Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

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

260

Block Erase Command

This command erases the data in the specified block. Execute the block erase command as explained

here following.

(1) Send the “2016” 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) Send the verify command code “D016” in the 4th byte of the transmission. With the verify com-

mand code, the erase operation will start for the specified block in the flash memory. Write the

highest address of the specified block for addresses A16 to A23.

When block erasing ends, the RTS1 (BUSY) signal changes from the “H” to the “L” level. After block

erase ends, the result of the block erase operation can be known by reading the status register. For

more information, see the section on the status register.

Each block can be erase-protected with the lock bit. For more information, see the section on the data

protection function.

A8 to

A15

A16 to

A23

2016

D016

CLK1

RxD1

TxD1

RTS1(BUSY)

(M16C reception data)

(M16C transmit data)

Figure 1.31.7. Timing for block erasing

M16C/62 Datasheet(PDF) 275 Page - Renesas Technology Corp