Tag
energy-budget
- Jul 8, 2026 Wake-Up Latency and Its Energy Cost Why returning from a low-power state costs microseconds and microjoules, how that cost sets a floor on the usable duty cycle, and where the transition sequence loses time. embedded systems
- May 28, 2026 From Duty Cycle to Average Current and Battery Life How charge accounting turns an active and sleep schedule into an average current, and where the resulting battery-life estimate stops being trustworthy. embedded systems
- Mar 30, 2026 Duty-Cycled Radios and Preamble Sampling Why a receiver that listens continuously dominates a radio budget, how preamble sampling trades latency for a short listen window, and where the trade breaks. embedded systems
- Mar 30, 2026 Peripheral Clock Gating and Autonomous Transfer How gating a peripheral clock saves dynamic power, why a gated peripheral still costs leakage, and how DMA lets a conversion happen with the core asleep. embedded systems
- Dec 8, 2025 Sizing Energy Storage for an Intermittently Powered Device How a harvesting source, a buffer capacitor, and a load with a fixed energy per operation determine whether a device can run at all, and what happens at the boundary. embedded systems
- Nov 22, 2024 Retention Versus Reinitialisation in Deep Sleep The trade between keeping state alive across a sleep and rebuilding it on wake, expressed as a sleep-current penalty against a per-wake energy cost. embedded systems
- Sep 18, 2024 Voltage and Frequency Scaling with a Performance Constraint Why lowering frequency alone rarely saves what it appears to, how voltage follows frequency, and where the quadratic voltage term stops paying for itself. embedded systems
- Oct 26, 2023 Attributing Energy to Code with a State Machine Model How to assign charge to firmware paths by tracking state transitions, why instruction counts are a poor proxy, and where the attribution model is structurally wrong. embedded systems