MicroThis electronic part is a microcontroller (MCU) manufactured by STC Micro Corporation. It is a sealed package with 28 leads (QFN-28) in the Quad Flat No-lead (QFN) format. This part is compliant with the Restriction of Hazardous Substances (RoHS) directive and is available in a varieties of product classes, such as industrial and automotive temperature range grades, all with wide operating voltage range.The STC15W408AS-QFN28 is a Flash-type MCU based on 8051 series core. It operates up to 24 MHz and has multiple built-in features that offer improved system performance, low power consumption and flexible hardware configurations. Features of this part include 4K/8K/15K/24K/32K/48K/64K Bytes of multi-time program memory, 128 Bytes of RAM, two 16-bit timers, 8-bit pulse width modulation (PWM) with up to eight channels, and a watchdog timer. The part also has an interrupt controller (EXI) for peripheral interrupts. Other features of this part include a UART interface, three I2C compatible bus interfaces, three SPI compatible bus interfaces, ADC module with up to 8-channel analog-to-digital conversion capability, and two power saving modes.