Recommendations on a good RTC for propeller

Jason Williams · 2009-10-31 17:13

Can anybody recommend a good real-time clock for use with the propeller?

Thanks.

JW

Bill Henning · 2009-10-31 17:20

Personally I like the PCF8563 - easy to use, and inexpensive.

Most people like the Dallas Semiconductor RTC - they are great too, but I found the PCF8563 and PCF8583 (adds 256 bytes of RAM) to be better for my purposes.

Jason Williams said...
Can anybody recommend a good real-time clock for use with the propeller?

Thanks.

JW

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Jason Williams · 2009-10-31 17:24

Thanks Bill. I'll check them out.

StefanL38 · 2009-10-31 20:26

obex types

http://obex.parallax.com/objects/search/?q=ds1302

http://obex.parallax.com/objects/search/?q=rtc

best regards

Stefan

lockadoc · 2009-10-31 23:24

I've found the one from the prop exchange works great its called "Jm-softrtc"
It comes with a good demo,,I've made a light (LED) timer with it ,with some help from a great guy in this forum.

BillS

Post Edited (lockadoc) : 11/2/2009 1:59:04 AM GMT

photomankc · 2009-11-01 07:01

Funny Bill should mention it. I have written a driver for the PCF8583. So far it is working great for me. The newest version however is not compatible with Basic_I2_Driver on the same bus but it's about 20 to 25% faster at raw transfers than the older version.

http://obex.parallax.com/objects/530/

Javalin · 2009-11-03 11:11

the dallas ds1307 rtc is included in the i2cObject v2 in the OBEX

James

dMajo · 2009-11-03 12:29

My choice is FM31L278 (datasheet). It have many additional features and replaces also the 32KB eeprom (fram: unlimited, fast write cycles)

PEdit: free samples available

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Recommendations on a good RTC for propeller

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