7643 datasheet(110/424 Pages) RENESAS

110 / 424 page

Rev.2.00

Aug 28, 2006

page 93 of 103

REJ09B0133-0200

OVERVIEW

FLASH MEMORY MODE

7643 Group

qID Code Check

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

command as explained here following.

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 FFC816. Write a program into the flash memory, which

already has the ID code set for these addresses.

Fig. 90 Timing for ID check

ID size

ID1

ID7

F516

C216

FF16

0016

SCLK

SRXD

STXD

SRDY (BUSY)

ROM code protect control

ID7

ID6

ID5

ID4

ID3

ID2

ID1

FFC916

FFC816

FFC716

FFC616

FFC516

FFC416

FFC316

FFC216

Address

Interrupt vector area

Fig. 91 ID code storage addresses

(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.

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