HT42B533-x - Holtek Semiconductor

HT42B533-x USB to SPI Bridge IC

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) / SCS (Slave mode) pin resume signal to request a remote wake-up ♦♦ S.

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 t.