The STC15F408AD with STC LQFP-32_7x7x08P RoHS is an 8-bit microcontroller manufactured by STC. It features a 40 MHz operating frequency, a low-power sleep mode, 4Kbytes of program memory, 128bytes of RAM, 12 channels of 10-bit A/D conversion, 5 channels of PWM output, 16 programmable I/O lines, where 14 can be used as interrupts, a 2048 byte EEPROM, dual clock oscillator, watchdog timer, a comparator, S-RAM and an integrated USB controller.