M306NNFJGP#U3 (Renesas) is a 16-bit flash microcontroller from the M16C/60 family (M16C/6N), with 512 KB of flash, in a 128-pin LFQFP package.

• 16-bit M16C/60 core · 24 MHz · 3 V to 5.5 V supply
• 512 KB flash · 31 KB RAM
• 111 I/O lines · 10-bit A/D converter (26 channels) · two 8-bit D/A converters
• CAN bus, I²C, IEBus, SIO and UART/USART · DMA and watchdog timer (WDT)

Data per Renesas M16C/6N datasheet.