A single poly non-volatile memory system for low voltage, low power analog calibration applications is presented, which performs the read, program and verify operations for a single-poly non-volatile memory. The reading circuitry performs single-ended sensing, thus no dummy cells are required. Furthermore, the system addresses the cells sequentially and automatically, is self-clocked and the operation frequency is adjustable. The system was fabricated using 0.35µm technology (nominal voltage of 3.3V). It operates down to 0.95V with a power consumption of 600nW during the reading operation. The timing unit operates down to 0.55V.
