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Crystal Oscillator

Purpose

The Crystal Oscillator is a fully integrated analog IP generating a secure clock signal through the resonance of an external crystal.

Features

▪ fully-integrated crystal oscillator (the crystal is the only external component);
▪ generation of a 32768 Hz clock signal (customized on request);
▪ state-of-the-art countermeasures against fault injection attacks:
− frequency monitor (null, low and high frequency detection);
− frequency glitch detectors (positive and negative glitch detection).
▪ power supply voltage range: core supply voltage ±10%;
▪ operating junction temperature range: -40°C to 125°C;
▪ electrical characteristics of a 65 nm CMOS implementation:
− power supply voltage range: 1.2 V ±10%;
− frequency tolerance smaller than ±0.05%;
− duty-cycle comprised between 30% and 70%;
− setup time shorter than 1 s;
− operating current consumption lower than 10 µA;
− silicon area smaller than 0.2 mm².
▪ silicon proven in 130 nm and 65 nm CMOS processes.

Deliverables

▪ 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.

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