The STC12LE5A40S2 is a high-performance 8-bit single-chip microcontroller (MCU) manufactured by STC. It is based on a totally new CMOS processing technology which provides low power consumption and high performance characteristics in a single chip. The STC12LE5A40S2 is suitable for use in a variety of general-purpose control applications and is equipped with a variety of peripherals, such as Flash Memory, EEPROM Memory, Analog Comparator, PWM, Timers, ADC, USART, I2C/SPI, and several other Input/Output ports to simplify hardware and software design. The STC12LE5A40S2 is housed in an LQFP-44_10x10x08P RoHS package and consumes only 3.5mA current in active mode.