Battery backup
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Posted by ClueLess on May 21, 2008, 2:54 am
Please log in for more thread options I have a setup with 8051 micro controller and I want to provide a battery backup so that when power fails the micro continues to work. Only the micro needs to work and other peripherals need not. What will be the minimum circuitry and what is the minimum voltage required to keep this micro up? -- Thanks for your time and attention ClueLess | |||||||||||||||||||||||||||||||||||||||||||
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Posted by Rich Grise on May 21, 2008, 1:52 pm
Please log in for more thread options Two diodes, for isolation. > and what is the minimum voltage
> required to keep this micro up? That depends on which model of micro - check the data sheet for a "power down" or "sleep" mode or the like; the data sheet knows all. ;-) Good Luck! Rich | |||||||||||||||||||||||||||||||||||||||||||
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Posted by Lord Garth on May 21, 2008, 3:53 pm
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> On Wed, 21 May 2008 14:54:47 +0800, ClueLess wrote:
"model" > Good Luck!
> Rich The spelling police are going to get you!!! | |||||||||||||||||||||||||||||||||||||||||||
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Posted by Rich Grise on May 22, 2008, 3:11 pm
Please log in for more thread options On Wed, 21 May 2008 14:53:56 -0500, Lord Garth wrote:
>> On Wed, 21 May 2008 14:54:47 +0800, ClueLess wrote:
>
> "model" >> Good Luck!
>> Rich >
> The spelling police are going to get you!!! What? How would _you_ spell "model"? http://www.google.com/search?q=define%3Amodel Thanks, Rich | |||||||||||||||||||||||||||||||||||||||||||
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Posted by Lord Garth on May 22, 2008, 4:03 pm
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> On Wed, 21 May 2008 14:53:56 -0500, Lord Garth wrote:
>>> On Wed, 21 May 2008 14:54:47 +0800, ClueLess wrote:
>>
>> "model" >>> Good Luck!
>>> Rich >>
>> The spelling police are going to get you!!! >
Rich, that was another worker in this office screwing with my
> What? How would _you_ spell "model"? > http://www.google.com/search?q=define%3Amodel > > computer when I was making a pit stop. I'm now convinced he is lesdexic or just stupid! ;-) PS. I'll try to remember to lock the keyboard when I'm out of sight so that won't happen again. | |||||||||||||||||||||||||||||||||||||||||||
>
> I have a setup with 8051 micro controller and I want to provide a
> battery backup so that when power fails the micro continues to work.
> Only the micro needs to work and other peripherals need not.
>
> What will be the minimum circuitry