M16C6K9 Datasheet, PDF(272/292 Page) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

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M16C6K9 Datasheet, PDF (272/292 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

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M16C/6K9 Group

Functions To Inhibit Rewriting Flash Memory

ID code check function

The function is used in standard serial I/O mode. If the flash memory is not blank, the ID code sent from serial

burner is compared with that inside flash memory to check the agreement. It the ID codes do not match, the

commands from serial burner are not accepted. Each ID code consists of 8-bit data, the areas of which,

beginning from the 1st byte, are 0FFFDF16, 0FFFE316, 0FFFEB16, 0FFFEF16, 0FFFF316, 0FFFF716,

0FFFFB16. Write a program with the ID code at these addresses to the flash memory.

Address

0FFFDC16 to 0FFFDF16 ID1

0FFFE016 to 0FFFE316 ID2

0FFFE416 to 0FFFE716

0FFFE816 to 0FFFEB16 ID3

0FFFEC16 to 0FFFEF16 ID4

0FFFF016 to 0FFFF316 ID5

0FFFF416 to 0FFFF716 ID6

0FFFF816 to 0FFFFB16 ID7

0FFFFC16 to 0FFFFF16

Undefined instruction vector

Overflow vector

BRK instruction vector

Address match vector

Single step vector

Watchdog timer vector

DBC vector

NMI vector

Reset vector

Fig.BB-7 ROM ID code addresses

4 bytes

Rev.1.00 Jun 06, 2003 page 272 of 290

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