The STC8H8K64U series is a cost-effective family of 8-bit microcontrollers with an ultra-high speed 8051 core that is compatible with the MCS51 instruction set. These microcontrollers offer an average instruction speed that is approximately 12 times faster than the traditional 8051, with most instructions requiring only one clock cycle for execution. They support clock frequencies of up to 40MHz, operate within a voltage range of 1.9V to 5.5V, and come equipped with standard peripherals such as a 12-bit ADC, analog comparator, multiple timers, PWM, DMA, UART, SPI, and I2C. Additionally, these microcontrollers feature a built-in bootloader, allowing firmware to be uploaded directly via the native full-speed USB 2.0 interface without the need for an extra programming device.

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