The GDMC191S20C is a RoHS-compliant SOP-20 package Other Processor and Microcontroller (MCU) manufactured by BYD. It is a low-power, high-performance 8051 microcontroller with a 1M Bytes In-System Programmable Flash Memory. This 8051 processor allows the user to customize their system with program components such as Serial Peripheral Interface (SPI), USART, I2C, Timer/Counter/PWM, ADC/DAC, Watchdog Timer (WDT), and more. It features a built-in 110 db analog-to-digital converter (ADC) and programmable pulse width modulation (PWM) capability. It also offers 30 MHz system core clock, up to 30 vectors interrupts and on-chip debug module. This MCU is ideal for use in a wide range of applications such as industrial, medical, automotive, home appliances, consumer electronics, and more.