Hi,
I would like to ask if there is a possibility to program a RL78 family microcontroller (R5F100) without any Renesas programmer? Using some diy programmer or another housing method?
Thanks in advance.
Marcin
You can use serial bootloader to flash rl78 microcontrollers.
Software to upload firmware can be found here -> https://github.com/msalov/rl78flashIt is in sources and it is for linux, maybe cygwin.
Hardware is rather trivial: UART, 2 diodes and wires (see schematics in hw folder).
Maxim.