The SC91F846M28U with SOP-28-7.8mm Microcontroller Unit (MCU/MPU/SOC) ROHS is a microcontroller unit manufactured by SinOne for embedded systems. It is an 8/16-bit, CMOS single-chip microcontroller that is designed for use with embedded applications. It contains an 8051-compatible CPU, 2K of RAM, 24K of ROM, two timers, two UARTs, one SPI, one I2C, and eight general purpose I/O lines. The device also has an I2S compatible audio interface, an LCD controller, and a number of analog and digital peripherals, such as A/D converters and comparators. The SC91F846M28U is RoHS compliant and comes in the standard SOP-28-7.8mm package.