The HT42B533-x is a high performance USB to SPI bridge controller with fully integrated USB and SPI interface functions, designed for applications that communicate with various types of SPI. The device includes a USB 2.0 full speed compatible interface which is used for PC commication. The device also includes a fully integrated high speed oscillator which is used for USB and SPI clock generator.

Features:

• Operating Voltage (VDD): 3.3V~5.5V
• SPI pins Voltage (VDDIO): 1.8V~VDD (Less than VDD voltage)
• Fully integrated internal 12MHz oscillator with 0.25% accuracy for all USB modes which requires no external components
• USB interface
  • USB 2.0 Full Speed compatible
  • Implements USB protocol composite device:
    • Communication Device Class (CDC) for communications and configuration
    • Human Interface Device (HID) for user configure USB VID, PID and device description strings
  • Integrated an internal 1.5kΩ pull-high resistor on D+ pin
• Serial Interface -- SPI
  • Supports clock rate up to 8MHz
  • Supports Master and Slave modes decided by AP command
  • Supports maximum 128 bytes transmit buffer and 128 bytes receive buffer
  • Supports SDI (Master mode) / SCSB (Slave mode) pin resume signal to request a remote wake-up
  • Supports VDDIO pin for SPI pins power supply
• Support standard Windows® drivers for Virtual Com Port (VCP): Windows XP (SP2), Vista, Windows 7, Windows 8, Windows 8.1 (only an INF file is required) and Windows 10.
• Support Android 4.0 or later version and Mac OS X
• Integrated 256 bytes internal true EEPROM for user memory
• Power down and wake-up functions to reduce power consumption
• Package types: 10-pin MSOP, 16-pin NSOP