Help using this crystal?

Hi,

I'm used to using regular 32.768khz 2-pin crystals with 2 caps to drive timer1 for a real time clock.

But I have this 4-pin clock/crystal that I would like to use (pic attached), but i'm not sure how to go about it.

I've searched for a data sheet but havnt had much luck finding one that is an exact match.

Do I still need capacitors for this type of clock? And how do the connections to the timer OSC pins go considering this thing has 4 pins.

Thanks.

Quote:

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Originally Posted by Kamikaze47

Hi,

I'm used to using regular 32.768khz 2-pin crystals with 2 caps to drive timer1 for a real time clock.

But I have this 4-pin clock/crystal that I would like to use (pic attached), but i'm not sure how to go about it.

I've searched for a data sheet but havnt had much luck finding one that is an exact match.

Do I still need capacitors for this type of clock? And how do the connections to the timer OSC pins go considering this thing has 4 pins.

Thanks.

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Here's a bit of data:
http://www.icwic.com/icwic/data/pdf/...rs/a/99977.pdf


steve

Thanks Steve. Looks like the closest thing to a data sheet I will get for this particular one.

Still lost as to how to hook it up to the timer1 oscillator inputs. Anyone played with these before?

No caps needed. Just connect the TTL clock osc output to T1CKI, and setup TMR1 for external clock from T1CKI pin with LP oscillator off.

ok, so i guess it's as simple as this?

pin 1 - no connection
pin 7 - ground
pin 8 - T1CKI pin of PIC
pin 14 - +5v

Yep. Should be.