M16CSLASH62 datasheet(272/621 Pages) RENESAS

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

Mitsubishi microcomputers

M16C / 62 Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

257

Software Commands

Table 1.31.1 lists software commands. In the standard serial I/O mode, erase operations, programs and

reading are controlled by transferring software commands via the RxD pin. Software commands are

explained here below.

Table 1.31.1. Software commands (Standard serial I/O mode)

Control command

2nd byte

3rd byte

4th byte 5th byte 6th byte

Page read

Page program

Block erase

Erase all unlocked blocks

Read status register

Clear status register

Read lockbit status

Lockbit program

Lockbit enable

Lockbit disable

ID check function

Download function

Version data output function

Boot area output function

Note1: Shading indicates transfer from flash memory microcomputer to peripheral unit. All other data is trans-

ferred from the peripheral unit to the flash memory microcomputer.

Note2: SRD refers to status register data. SRD1 refers to status register 1 data.

Note3: All commands can be accepted when the flash memory is totally blank.

When ID is

not verificate

Not

acceptable

Not

acceptable

Not

acceptable

Not

acceptable

Acceptable

Not

acceptable

Not

acceptable

Not

acceptable

Not

acceptable

Not

acceptable

Acceptable

Not

acceptable

Acceptable

Not

acceptable

Version

data output

to 9th byte

Data

output to

259th byte

Data

output to

259th

byte

Data input

to 259th

byte

To ID7

Data

output

Data

input

ID1

required

number

of times

Version

data

output

Data

output

Data

output

Data

input

ID size

Data

input

Version

data

output

Data

output

Data

output

Data

input

D016

Lock bit

data

output

D016

Address

(high)

Check-

sum

Version

data

output

Data

output

Address

(high)

Address

(high)

Address

(high)

SRD1

output

Address

(high)

Address

(high)

Address

(middle)

Size

(high)

Version

data

output

Address

(high)

Address

(middle)

Address

(middle)

Address

(middle)

D016

SRD

output

Address

(middle)

Address

(middle)

Address

(low)

Size

(low)

Version

data

output

Address

(middle)

FF16

4116

2016

A716

7016

5016

7116

7716

7A16

7516

F516

FA16

FB16

FC16

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