The STC15W401AS-35I-TSSOP28 is a microcontroller made by STC, one of the leading semiconductor solution providers in China, and is part of their STC15W401AS series of 8-bit microcontroller units. It is a RoHS compliant TSSOP-28 package, and is specially designed for automotive, home automation, motor control, and industrial applications. Inside the 28-lead package, the microcontroller comes with an ARM Cortex-M3 core with up to 11 MIPS performance, 32KB of I-Cache and 64KB of Flash program memory, 256KB of SRAM data memory, 10-bit ADC, 16 UARTs, 4 SPI/4 I2C/1 CAN interfaces, and 60 GPIOs. The STC15W401AS-35I-TSSOP28 also comes with built-in robust safety features such as Watchdog Timer, Safety-Critical SysTick Timer, and NMI Interrupt Handling. The device also provides a wide operating voltage range of 2.7V-3.6V, and is ideal for industrial design and applications requiring low power operation and reliable safety functions.