[time-nuts] Tbolt temperature sensor

[Bruce Griffiths]

Ulrich

If and only if it can be shown that the thermostat function output pins
(Thigh, Tlow, Tcom) of the DS1620 aren't used.

Bruce

Ulrich Bangert wrote:
> Mark,
>
> in this case the DS1620 may perhaps be exchanged against a DS18S20 which
> definitely supports the high res reading. Bought chips & programmed for
> them at the end of last year.
>
> Best regards
> Ulrich Bangert
>
>   
>> -----Ursprüngliche Nachricht-----
>> Von: time-nuts-bounces at febo.com 
>> [mailto:time-nuts-bounces at febo.com] Im Auftrag von Mark Sims
>> Gesendet: Samstag, 7. Februar 2009 05:02
>> An: time-nuts at febo.com
>> Betreff: [time-nuts] Tbolt temperature sensor
>>
>>
>>
>> I got some info back from Maxim on the DS1620.  The rev D 
>> chips use the dual oscillator design described in the data 
>> sheet.  The rev E chips are based on a temperature 
>> compensated bandgap design.   
>>
>> The high resolution read routine is based upon reading 
>> counter values and residuals...  it's beginning to look like 
>> the newer chips don't do it...  I've got more questions to 
>> ask Maxim... 
>> _________________________________________________________________
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> ore_022009
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