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Flash memory self-programming in 16-bit single-chip MCU

Posted: 19 Sep 2008     Print Version  Bookmark and Share

Keywords:internal firmware  flash memory  self-programming library  external programmer 

The 78K0R/Kx3 series products are equipped with an internal firmware, which allows rewriting of the flash memory without the use of an external programmer. In addition to this internal firmware NEC provides the so-called self-programming library. This library offers an easy-to-use interface to the internal firmware functionality. By calling the self-programming library functions from user program, the contents of the flash memory can easily be rewritten in the field.

In the 78K0R/Kx3 series products, the self-programming library rewrites the contents of the flash memory by using the CPU, its registers and the internal RAM. Thus the user program cannot be executed while the self-programming library is in process.

The self-programming library uses the CPU. Use of some RAM areas are prohibited when using the self-programming.

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