7641 데이터 시트보기 (PDF) - Mitsumi

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7641

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

Mitsumi 

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MITSUBISHI MICROCOMPUTERS

7641 Group

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

Software Commands

Table 33 lists software commands. In standard serial I/O mode,

erase, program and read are controlled by transferring software

commands via the SRXD pin. Software commands are explained

here below. Basically, the software commands of the standard se-

rial I/O mode are as same as that of the parallel I/O mode, but 4

commands are added: ID check, download, version data output

and Boot ROM area output functions.

Table 33 Software commands (Standard serial I/O mode)

Control command

1st byte 2nd byte 3rd byte 4th byte 5th byte 6th byte

.....

transfer

When ID is

not verified

1 Page read

2 Page program

3 Block erase

4 Erase all blocks

5 Read status register

6 Clear status register

7 ID check

8 Download function

FF16

4116

2016

A716

7016

5016

F516

FA16

Address Address

(middle) (high)

Address Address

(middle) (high)

Address

(middle)

D016

Address

(high)

SRD

output

SRD1

output

Data

output

Data

input

D016

Address

(low)

Size

(low)

Address

(middle)

Size

(high)

Address

(high)

Check-

sum

Data

output

Data

input

ID size

Data

input

Data

output

Data

input

Data

output to

259th byte

Data input

to 259th

byte

ID1

To

required

number

of times

To ID7

Not

acceptable

Not

acceptable

Not

acceptable

Not

acceptable

Acceptable

Not

acceptable

Acceptable

Not

acceptable

9 Version data output function FB16 Version Version Version Version Version

Version

Acceptable

data

data

data

data

data data output

output output output output output to 9th byte

10 Boot ROM area output

function

FC16

Address Address

(middle) (high)

Data

output

Data

output

Data

output

Data

output to

259th byte

Not

acceptable

Notes1: Shading indicates transfer from the internal flash memory microcomputer to a programmer. All other data is transferred from a programmer to the in-

ternal flash memory microcomputer.

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

3: All commands can be accepted for the products of which boot ROM area is totally blank.

4: Address low is AB0 to AB7; Address middle is AB8 to AB15; Address high is AB16 to AB23.

126

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