MicroThe STC12C5616AD-35I-SOP28 is an 8-bit microcontroller (MCU) part manufactured by STC Micro. It has an STC LQFP-32_7x7x08P RoHS package, meaning it has 32 pins in the LQFP (leadless quad flatpack) package, spaced 7mm x 7mm with a pitch of 0.8mm between pins. It has a central processing unit (CPU) of 12C5 and built-in ROM (read only memory) of 4KB, RAM (random access memory) of 536 bytes, EEPROM (electrically erasable programmable read only memory) of 128 bytes, and operates at up to 25MHz. It also has various peripherals such as programmable counter/timer(PCA), serial ports, an in-system programmer (ISP), real-time clock (RTC), and an oscillator. It is suitable for applications such as smart instrumentation systems, remote sensing, low power system control, and industrial control.