Reram Area; Data Protection Function - Panasonic MN101L Series User Manual

18.1.2

ReRAM Area

Table:18.1.2 shows program, data and reserved areas in ReRAM.
Area
0x04000 to 0x040FF
0x04900 to 0x13FFF
0x04100 to 0x048FF
0x6F000 to 0x6FBFF
18.1.3

Data Protection Function

The following functions are available to protect the data of ReRAM.
Protective Function
Protective Function prevents unintentional programming.
The protect area is specified with "Start Address" and "Data Size", and up to three area can be protected.
Once Protective Function is activated, the data in the protection area can not be overwritten.
(Protective Function can not be deactivated by software.)
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Security Function
Security Function is prevents all areas of the ReRAM reading or programming. This function blocks interpolation
and leak of the data in ReRAM. Security Function is enabled or disabled with a key code (128-bit).
The key code cannot be changed once it is set.
.. ..
Keep the key code in a safe place.
Without the key code, ReRAM programming and rewriting cannot be performed.
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Table:18.1.2 Application of ReRAM area
Application
Program area
- Store the user program
Data area
- Store the data
(User program can be stored in this area)
Reserved area
- Software library for programming ReRAM is stored.
Access cycle Rewriting
1 cycle Available
2 cycles Available
1 cycle Not Available
Overview of ReRAM
Chapter 18
ReRAM
XVIII - 3