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April 29, 2008
News - Rock Bottom Power
about 4 years ago
Idle current is one of the important factors in low power design. However, there are more factors including:
1. How long does it take to change from idle to active in order to do something useful? It will impact the overall budget and if it is too slow, it may cause you to miss the event.
2. What is the active mode current? Even for low duty cycle, it has an overall impact.
3. Can it do something useful at low power mode? e.g. DMA capture.
TI MSP430 and Microchip PIC XLP series are very good and metioned. There is a newcomer, EnergyMicro EFM, worths taking a look. 0.9uA draw, with 32KHZ osc on, brown out detector enable, and memory data retention.
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