This product is a high-speed, low-power 1T cycle 8051 kernel 8-bit enhanced FLASH microcontroller chip, which is faster and more efficient than the traditional 8051. The highest operating frequency was 24 MHz, Integrated with 18K-byte FLASH ROM and 2304-byte RAM (internal RAM 256B, plus external RAM 2048B), Built-in 1 high frequency RC oscillator and 1 low frequency RC oscillator, 1 set of external crystal oscillator drive interface, User option configured for high frequency 4 to 24 MHz or 32768Hz crystals, Up to 30 bidirectional GPIO ports, Integrate the flexible alternative debugging and programming interfaces, PWM timer with 416-bit timers, 3 sets of 6-channel 16-bit co-cycles and with adjustable duty cycle (with dead zone complementarity and brake protection), Integrated 11 1 external channel high-precision 12-bit ADC module, 2-way UART, And the 1-way SPI, Integrated with two sets of analog voltage comparators and one set of analog operational amplifier, At the same time, the internal integration of level 4 optional LVR, watchdog timer, CRC check and other fault tolerance functions, Greatly improve the reliability of the chip.