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H5C1 RTC crystal?
Posted: 18 Mar 2023 12:46
by BigSteve
I have hunted and not found anything.
Can somebody confirm that the crystal I need for the real time clock IC (DS1315) is a 32.768khz 'tuning fork clock crystal' please?
The spec sheet indicates that is a typical value - but I am looking for the mythical C1 BOM!!
Re: H5C1 RTC crystal?
Posted: 18 Mar 2023 15:35
by rubber_jonnie
BigSteve wrote: 18 Mar 2023 12:46
I have hunted and not found anything.
Can somebody confirm that the crystal I need for the real time clock IC (DS1315) is a 32.768khz 'tuning fork clock crystal' please?
The spec sheet indicates that is a typical value - but I am looking for the mythical C1 BOM!!
That's the frequency you need, though I'm not 100% sure of the footprint.
Re: H5C1 RTC crystal?
Posted: 18 Mar 2023 16:16
by exxos
https://exxosforum.co.uk/forum/viewtopi ... =89&t=4476
Sadly it looks like the osc got missed. I can't check until I get back home on Monday.
Re: H5C1 RTC crystal?
Posted: 18 Mar 2023 16:43
by DoG
Yes. Its a small cylinder shape quartz crystal, 2mm x 6mm. I think I fitted a slightly larger (3mm x 8mm) but it's a snug fit.
Re: H5C1 RTC crystal?
Posted: 19 Mar 2023 00:46
by BigSteve
rubber_jonnie wrote: 18 Mar 2023 15:35
That's the frequency you need, though I'm not 100% sure of the footprint.
Excellent - thanks for confirmation.
DoG wrote: 18 Mar 2023 16:43
Yes. Its a small cylinder shape quartz crystal, 2mm x 6mm. I think I fitted a slightly larger (3mm x 8mm) but it's a snug fit.
Perfect - I have a local supplier with stocked device - Length 6.09 x 1.92 diameter with 0.7mm centres for leads. Perhaps also salvageable from a clock/watch too!
Re: H5C1 RTC crystal?
Posted: 19 Mar 2023 21:55
by exxos