Connecting a pcf8583p to the basic stamp

Shiva

Hi,

I wonder how to connect a pcf8583p component to my basic stamp 2p40.
I've read·its documentation

http://www.semiconductors.philips.com/acrobat/datasheets/PCF8583_5.pdf

and I'm a bit confused about the oscillator driving the chip.
First they talk about an·on-chip 32768 kHz oscillator·circuit·on page 5, chapter 7.
But in paragraph 7.10, page 12,·the documentation tell us to connect a 32768 kHz quartz crystal to pins OSCI and OSCO. So what is it, does it or doesn't it contain an oscillator?
If there is an internal oscillator (the option I·prefer), then what should I connect to OSCI and OSCO pin?

Thanks in advance!

Erik

Bean

The device contains the oscillator circuit, but NOT the crystal.
You need to connect a crystal.

Bean

K de Jong

Hi Erik,

I use the PCF8583 with a 32768 kHz crystal and it works fine.

I don't know what will happen if I let the crystal out, I just did'nt try it.

Klaus

Shiva

Bean said...
The device contains the oscillator circuit, but NOT the crystal.
You need to connect a crystal.

Bean

Thanks Bean! I only got a basic knowledge of electronics and thought up to now that crystals and oscillators were more or less the same.
I think I'll google the internet to find out the exact difference