I wonder if anyone can help, I am looking for a USB Microcontroller with the following specifications
USB+USART+SPI , possibly not need SPI USB slow or fast, RS232-300-19200 baud min, prefer upto 115200. When the USB is in suspend or not connected Microcontroller needs to run at low speed such that current consumption is around 1mA but the RS232 to keep running and the data logged and no problems with switching crystal frequencies etc for the reduced current consumption requirements. Ram 1K Flash, 4K+USB Firmware. Does anybody know of anything that could do this? Thanks