OKY3394 is a microcontroller designed by OKYSTAR. It is designed to be a single-chip solution for embedded systems such as robotics, smart home, and other industrial and automotive applications. It is based on a 32-bit ARM Cortex M4 microprocessor and provides integrated memory, audio, and video solutions. This microcontroller also supports a wide range of external peripherals such as Ethernet, USB, and SDIO interfaces. Additionally, it can be programmed using open source tools such as the Keil MDK and IAR Embedded Workbench.