The idea is that these systems are nearly always in a deep sleep mode, waking from time to time to do something before going back to sleep. Today many of us are building ultra-low power embedded systems that must run for years off a battery. Rev 5: October 2019 - Added Jon Fuge's and Bing Huang's ideas for protecting against reversed batteries. Rev 4: March 2016 - Added section 12 about watchdog timers. Rev 3: May 2015 - Added update in section 11 about electron pooling. Rev 2: May 2015 - Added link to Low Power Design article. Rev 1: March 2015 - Added new info about improved Freescale datasheets. but none could refute the evidence I provided. After this was published a number of the vendors called to complain. Unless you use the techniques outlined on this page you'll be lucky to get a year before the battery is discharged. Too many MCU vendors make outrageous claims about battery life, like ten years from a coin cell. Hardware and Firmware Issues in Using Ultra-Low Power MCUs, by Jack Ganssle Zeroplus has graciously given us three of their Wirecare AC circuit testers which I reviewed here. For novel ideas about building embedded systems (both hardware and firmware), join the 40,000+ engineers who subscribe to The Embedded Muse, a free biweekly newsletter.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |