CTU Adapter

CTU Adapter         

For demonstration, test and development purposes, it is convenient to communicate with CTU chips using a PC. The CTU Adapter converts between the SPI interface of CTU chips and the USB interface of a PC. The Adapter is an SPI master and the CTU is an SPI slave.

CTU Adapter for SPI to USB conversion

  • USB powered
  • Selectable CTU power supply: 2.7V, 3.3V or 3.6V
  • Adapter firmware can be updated in the field
  • Full speed USB operation
  • Interface DLL available for software developers
  • Compact, rugged, metal housing
  • Supplied with USB and SPI cables


  • 100 SPI write/reads per second (typical PC)
  • 1Mbit/s SPI clock rate
  • SPI timings compatible with CTU chips
  • 100mA max power supply output current


  • Connecting CTU chips to a PC for demos and test
  • Developing CTU chip applications
  • PC based measurement systems
A CTU Development Kit is also available, and includes the CTU Adapter together with CTU Development Board, sensors and targets. This is recommended for getting started.