M16CSLASH26 datasheet(214/239 Pages) RENESAS

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Renesas Technology Corp.

Appendix Standard Serial I/O Mode 1 (Flash Memory Version)

208

M16C/26 Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Under

development

Preliminary Specifications Rev. 0.9

Specifications in this manual are tentative and subject to change.

Software Commands

Table 1.22.2 lists the software commands, and their descriptions, in standard serial I/O mode 1. Erase

operations, programming, reading status, etc. are controlled by transferring software commands via the

RxD1 pin.

Table 1.22.2. Software commands (Standard serial I/O mode 1) (Note 1)

Note 1: All commands can be accepted when the flash memory is totally blank.

Note 2: Shaded area indicates transfer from flash memory microcomputer to peripheral unit. All other data is

transferred from the peripheral unit to the flash memory microcomputer.

Note 3: SRD refers to status register data. SRD1 refers to status register 1 data.

Note 4: The 'erase all' command does not erase the Flash data blocks.

Control Command

Address

(middle)

Page read (Note 2)

1st Byte

Transfer

FF16

2nd

Byte

3rd

Byte

4th

Byte

5th

Byte

6th

Byte

When ID is

not verified

Page program

Address

(high)

Not

acceptable

4116

Address

(middle)

Address

(high)

Data

input

Data

input

Data

input

Data

input to

259th byte

Not

acceptable

Block erase

2016

Address

(middle)

Address

(high)

D016

Not

acceptable

Read status register (Notes 2,3)

7016

SRD

output

SRD1

output

Acceptable

Clear status register

5016

Not

acceptable

ID check function

F516

Address

(low)

Address

(middle)

Address

(high)

ID size

ID1

Acceptable

Download function

FA16

Size

(low)

Size

(high)

Checksum

Data

input

To required

no. of times

To ID7

Not

acceptable

Version data output function

(Note 2)

FB16

Read check data (Note 2)

FD16

Acceptable

Not

acceptable

Check

data

(low)

Check

data

(high)

Version

data

output

Version

data

output

Version

data

output

Version

data

output

Version

data

output

Version

data output

to 9th byte

Data

output

Data

output

Data

output

Data

output to

259th byte

... nth

Byte

Erase all code blocks (Note 4)

A716

D016

Not

acceptable

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