SD2057 with Interface - Specialized QFN24 RoHS is a highly integrated and high performance system-on-chip (SoC) for PC peripheral applications. It is manufactured by SDIC Microelectronics, a leading provider of specialized SoC solutions for PC peripherals. The chip integrates a USB 3.0/2.0 physical layer with up to 4 USB ports, an integrated 8051 compatible microprocessor with a maximum clock frequency of 120MHz, up to 3 pulse-width modulation (PWM) outputs, up to 11 general-purpose input/output (GPIO) pins, up to 4 UARTs, up to 4 digital/analog converters (ADCs/DACs), up to 4 I2C and SPI interfaces, and up to 4 USB2.0 downstream ports. It has a low-power standby mode supported with a 0.35mA current consumption. The chip supports in-system programmability (ISP) via I2C and JTAG interfaces, and it integrates an internal oscillator for high-accuracy timekeeping. It is also RoHS compliant.