SparcBook Tadpole

Dave McGuire mcguire at
Wed Aug 11 20:42:13 CDT 2010

On 8/11/10 8:48 PM, Alexandre Souza - Listas wrote:
>>  Well yes, but it's not really all that bad.  Those chips are shipped
>> with their clocks stopped, and you need to set a bit in them (normally
>> done by the OS at boot time, just in case) to "kick start" them. I
>> believe the datasheets even call it the "kick start bit". The battery
>> life is essentially the shelf life before the kick start bit is set
>> for the first time.
> First pulse in the /wr line...

   Is that what does it?  I definitely remember a "kick start" bit in 
the datasheet.  Was that for the clock, and the /WR line enabled the 
backup for the SRAM?


Dave McGuire
Port Charlotte, FL

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