An Ultra-Low Power Multi-Level Power-on Reset for Fine-Grained Power Management Strategies

This paper proposes a multi-level POR circuit with programmable voltage thresholds, that can operate in different fine-grained power management strategies. The POR is designed in a 0.18μm standard-logic CMOS technology, and occupies an area of 110μm × 70μm. Simulations results show a robust performance over process and temperature variations (PVT), rising times ranging from 1μs to 1s, and different supply values, while consuming a current of 19nA.