The diagram shown here compares the CP2130 to other competitor's products. The CP2130 USB-to-SPI bridge offers: 11 GPIOs with alternate functions, higher maximum throughput, no external crystal required for USB communications, I/O supply flexibility which allows the CP2130 to communicate with devices operating at lower voltage (like 1.8V) than the supply of the CP2130, higher regulator output current to power external circuits and a small 4mm x 4mm package.