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IoT requirements are almost as varied as the Things to which they are applied, but common demands are maximum battery life with minimum system cost and physical volume. Sub-threshold operation is promising, but even a single un-optimized or always-on component can eliminate low-voltage gains elsewhere. This work presents a highly integrated sub-threshold capable ARM based MCU with fully integrated...
Small, low-cost and energy efficient wireless sensor nodes (WSNs) form a vital part of the Internet of Things (IoT). WSNs spend the majority of their time in low-power sleep mode and wake up for short intervals. To ensure minimum energy (MinE) operation of such sensor nodes, fast wide-range voltage scaling is required. As voltage is aggressively scaled between ultra-low retention levels and sub, near...
A chip of embedded SRAM having backup circuits using a 60-nm c-axis aligned crystalline oxide semiconductor (CAAC-OS) such as CAAC indium-gallium-zinc oxide (CAAC-IGZO) and Cortex-M0 core having flip-flops with CAAC-OS backup circuits is fabricated. The SRAM and M0 core can retain data using the backup circuits during power-off; thus, they can perform power gating (PG) with backup time of 100 ns and...
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