rl78 bootloader

RL78 microcontrollers from Renesas Electronics Corporation support in-system programming (ISP) through a bootloader. A bootloader is a small piece of software that is executed before the main application starts running. It is used to load the main application code into the microcontroller's flash memory.

The RL78 bootloader allows the user to program the microcontroller without the need for external programming hardware. The user can simply connect a USB cable to the microcontroller and use a PC-based tool to send the new firmware to the microcontroller through the bootloader.

To use the RL78 bootloader, you need to first program the bootloader code into the microcontroller's flash memory using an external programmer or debugger. Once the bootloader is programmed, you can use the PC-based tool to load new firmware into the microcontroller.

The RL78 bootloader provides several features such as:

- Automatic baud rate detection
- Data integrity check
- Flash memory protection
- Error handling and recovery

Overall, the RL78 bootloader simplifies the firmware update process and makes it easier to maintain and upgrade the microcontroller's firmware.