启动模式下 用于renesas 瑞萨微控制器的 串行接口库_C语言_代码_相关文件_下载

# renesas-bootmode serial interface library for renesas microcontrollers in boot mode ## hardware This library is tested using a FTDI FT232RL USB to serial adapter (make sure you use one that can match Vcc of the microcontroller - 5V or 3.3V) ## SH-2A ``` +---+PC+---+ +---+FTDI+---+ +---+MCU+---+ | | | | | | | USB +<-------->+ USB RX +<-------->+ TX | | | | TX +<-------->+ RX | | | | | | | | | | GND +<-------->+ GND | | | | VCC +<----*--->+ FLMD0 | | | | | '--->+ RESET | | | | | | | +----------+ +------------+ +-----------+ ``` ### notes * assumes MCU already has pull-up resistors on RX/TX lines * assumes MCU already has pull-up resistor on RESET line * momentarily set reset low then hold high to get into boot mode ## V850E2 ``` +---+PC+---+ +---+FTDI+---+ +---+MCU+---+ | | | | | | | USB +<-------->+ USB RX +<------*->+ TX/RX | | | | TX +<---o | | | | | | | ,-|>-' | | | | | | | | | | | | GND +<-*------>+ GND | | | | VCC +<-------->+ FLMD0 | | | | RTS +<---|>o-->+ RESET | | | | | | | +----------+ +------------+ +-----------+ ``` ### notes * assumes MCU already has pull-up resistor on TX/RX line * assumes MCU already has pull-up resistor on RESET line * connect FTDI RTS line to inverter to MCU RESET line * connect tri-state buffer * enable line wired to inverted FTDI TX * input line wired to GND * output line wired to TX/RX ## references [Renesas Flash Programmer Sample Circuit for Programming by Using a PC’s Serial Port](https://www.renesas.com/us/en/doc/products/tool/doc/001/r20ut0857ej0300_rfpsplcrct.pdf)