CHAPTER 27 FLASH MEMORY
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CHAPTER 27 FLASH MEMORY
The RL78 microcontroller incorporates the flash memory to which a program can be written, erased, and overwritten
while mounted on the board. The flash memory includes the “code flash memory”, in which programs can be executed,
and the “data flash memory”, an area for storing data. Refer to 4.1 Memory Space.
The following methods for programming the flash memory are available.
The code flash memory can be rewritten to through serial programming using a flash memory programmer or an
external device (UART communication), or through self-programming.
• Serial Programming Using Flash Memory Programmer (see
)
Data can be written to the flash memory on-board or off-board by using a dedicated flash memory programmer.
• Self-Programming (see
)
The user application can execute self-programming of the code flash memory by using the flash self-programming
library.
The data flash memory can be rewritten to by using the data flash library during user program execution (background
operation). For access and writing to the data flash memory, see
.
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