Physical Unclonable Function (PUF)

​The Physical Unclonable Function (PUF) is a fully integrated analog IP generating a stable number from random local process variations.

Key Features

Fully integrated
Margin-check mechanism
Robust architecture
Low power consumption
Silicon proven


  • stable 128-bit number generated from random local process variations
  • fully integrated analog IP based on a current-mode architecture
  • 128 reliable bits selected among a total of 256 bits (size customized on request)
  • bit stability verified through a margin check mechanism
  • reliable bits stable over voltage, temperature and aging
  • typical retention time under normal operating conditions higher than 10 years
  • typical characteristics of a 55 nm CMOS implementation:
    • power supply voltage range: 1.2 V ±10%
    • operating junction temperature range: -40°C to 125°C
    • typical bit reading time shorter than 10 µs
    • typical operating current during bit reading smaller than 20 µA
    • typical standby current smaller than 1 µA
    • silicon area smaller than 0.04 mm²
  • silicon proven in 65 nm and 55 nm CMOS processes


  • GDSII stream and layer map file
  • Library Exchange Format (LEF) file
  • Circuit Description Language (CDL) netlist
  • Liberty Timing File (.lib)
  • VHDL behavioral model
  • design specification

Please contact for any further information.