MicroThe STC12C2052AD is an 8-bit single-chip microcontroller manufactured by STC Micro LLC. It is designed for use in automobile OR logic systems and is compliant with the RoHS standard. The STC12C2052AD comes in a SOP-20_300mil package and contains an 8051-compatible core, 256K on-chip Flash, 1024B RAM, 8-channel 8-bit A/D converter,3-channel 16-bit timers, 3-channel 16-bit PWM timer/counter, and an SPI & SDP protocol controller. It also contains a set of powerful on-chip peripherals, including two UARTs, two I2C, a Watchdog Timer, and an external interrupt port. The operating voltage range is from 2.2V~5.5V and the instruction clock frequency can be up to 24MHz. The STC12C2052AD is a high-performance, economical solution for applications requiring OR logic.