Boosting RISC V ISA With Open Source Peripherals: An SoC For Low Power Sensors

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" summary

Onchip and SiFive release a set of always‑on peripheral IP aimed at battery‑powered sensors and tape out a RISC‑V SoC in 180 nm vanilla logic. Deliverables include a power management unit with 8‑instruction microcode, programmable LDOs sized 10–50 µm, a low‑power RC oscillator that measures about 1 µA at 1.8 V (5 µA at 3.3 V) with ~3σ ≈ 180 Hz spread, a multi‑resolution ADC, and an RNG; RTL and docs go open via Frigate, schematics/layout require the Design Chip program NDA, qualified IP expected 2019.

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" chapters (13)

1. 0:00Intro
2. 1:01Peripherals associated with Always-On (AON) domain
3. 2:48AON Voltage Domains
4. 3:41AON - Power Management Unit (PMU)
5. 6:47Biasing Control
6. 8:40Brownout Detector
7. 9:20Power-On Reset
8. 9:32Multi-resolution DAC
9. 10:09Multi-resolution ADC
10. 10:22Fully Synthesized True Random Number Generator
11. 11:27Flow Methodology
12. 12:02Deliverables
13. 12:41Timeline

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