R8C2K datasheet(381/471 Pages) RENESAS

Part #	R8C2K

Description	RENESAS MCU R8C FAMILY / R8C/2x SERIES

PDF	471 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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381 / 471 page

R8C/2K Group, R8C/2L Group

20. Flash Memory

Rev.1.10

Dec 21, 2007

Page 364 of 450

REJ09B0406-0110

20.3

Functions to Prevent Rewriting of Flash Memory

Standard serial I/O mode has an ID code check function, and parallel I/O mode has a ROM code protect function to

prevent the flash memory from being read, rewritten, or erased.

20.3.1

ID Code Check Function

The ID code check function is used in standard serial I/O mode. Unless 3 bytes (addresses from 0FFFCh to

0FFFEh) of the reset vector are set to FFFFFFh, the ID codes sent from the serial programmer or the on-chip

debugging emulator and the 7-byte ID codes written in the flash memory are checked to see if they match. If the

ID codes do not match, the commands sent from the serial programmer or the on-chip debugging emulator are

not acknowledged. For details of the ID code check function, refer to 13. ID Code Areas.

R8C2K Datasheet(PDF) 381 Page - Renesas Technology Corp