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Low Pow
The first ultra low power MCU from Silicon Labs was released several years ago and it remains one of the lowest power solutions on the market today. Now with the introduction of the latest C8051F9xx devices, Silicon Labs offers an even lower power MCU. This slide shows some of the enhancements made to the family. All of the power numbers have been reduced over the current family and some new sleep modes are now available. In addition to the internal power consumption numbers, system level design considerations can now be addressed by allowing the MCU wake-up source to drive a wakeup to external devices. This is a useful feature when external components are in a low power sleep mode and need to wake-up based on system level events, for example, a power supply that needs to start up. New power enhancements were also added. The DC/DC converter has a low power mode where the bias currents are substantially reduced, which can lead to an efficiency improvement with light load currents (generally less than a few mA). Another converter enhancement is the continuous input range from 0.9 V to 3.6 V. This provides the ability to connect most battery topologies.
PTM Published on: 2011-01-25