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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

qID Check

This command checks the ID code. Execute the boot ID check

command as explained here following.

(1) Transfer the “F516” command code with the 1st byte.

(2) Transfer addresses AB0 to AB7, AB8 to AB15 and AB16 to AB23

(“0016”) of the 1st byte of the ID code with the 2nd and 3rd re-

spectively.

(3) Transfer the number of data sets of the ID code with the 5th

byte.

(4) Transfer the ID code with the 6th byte onward, starting with the

1st byte of the code.

SCLK

SRXD

F516 C216 FF16 0016 ID size ID1

ID7

STXD

SRDY (BUSY)

Fig. 114 Timing for ID check

qID Code

When the flash memory is not blank, the ID code sent from the se-

rial programmer and the ID code written in the flash memory are

compared to see if they match. If the codes do not match, the

command sent from the serial programmer is not accepted. An ID

code contains 8 bits of data. Area is, from the 1st byte, addresses

FFC216 to FFC916. Write a program into the flash memory, which

already has the ID code set for these addresses.

Address

FFC216

FFC316

FFC416

FFC516

FFC616

FFC716

FFC816

FFC916

ID1

ID2

ID3

ID4

ID5

ID6

ID7

ROM code protect control

Interrupt vector area

Fig. 115 ID code storage addresses

132

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