Renesas H8S/2378F Manual de usuario descargar pdf (Pagina 70)

5.7 ID Code

5.7.1 ID Code Checking Function

In the standard serial input/output mode, the ID code checking function is available to prevent flash memory from being

read or reprogrammed easily.

When flash memory is not blank, this function checks whether the ID code sent from the programmer and the 7-byte ID

code programmed in flash memory match. If they do not match, the function does not accept any command sent from

the programmer.

It is advisable to create a program in which an ID code is set in the ID code area in advance and write the program in

flash memory, to prevent flash memory from being read or reprogrammed easily.

5.7.2 When No ID Code Checking Is Made

When no ID code is set, a blank or H'FFFFFFFFFFFFFF is set in the ID code area. When the ID code of a programmed

file is blank or H'FFFFFFFFFFFFFF, no ID code checking is made and the specified file can be programmed.

5.7.3 ID Code Input

When a file in which an ID code is set is programmed in flash memory, the ID code must be entered to program a new

file.

In this case, select the file and click "Start." The "ID Code" dialog appears.

When the ID code of the already programmed file is H'11223344556677, enter the code.

When you have set the ID code, click "OK."

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Renesas H8S/2378F Manual de usuario Pagina 70