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'[PICLIST] Serial (RTC+EEPROM)'
2001\01\18@152751 by Christian Dorner

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Hi Pedro!

> Is there any SERIAL real-time clock + EEPROM out there ? Could not find it
> from Dallas, Maxim, Atmel,...

If a I2C (or IIC) is ok for you, you can find some on the Dallas site.
Currently i use the DS1307 in a project. It includes a RTC and 64 x 8 Bit of
EEProm.

cu, Doc ...

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2001\01\19@041058 by Alan B. Pearce

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>Is there any SERIAL real-time clock + EEPROM out there ? Could not find it
>from Dallas, Maxim, Atmel,...

Philips do a serial RTC in their I2C range. I think it has CMOS ram as well -
not much sense in EEPROM when you need a battery to run the clock :) Check out
PCF8593 parts.

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2001\01\19@062306 by D Lloyd

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part 1 1166 bytes content-type:text/plain; charset=us-ascii
Hi,

You are in luck.....

Xicor make a part (X1243, I believe) with a RTC and 2Kx8 of nv RAM.
Interface is I2C (or, 2 wire, depending on if you want to avoid Philips'
royalty fees).

In fact, they have a whole range of I2C RTC devices with nice goodies on
board. Be careful with the layout, however.

Regards,
Dan




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Subject:  Re: Serial (RTC+EEPROM)

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>Is there any SERIAL real-time clock + EEPROM out there ? Could not find it
>from Dallas, Maxim, Atmel,...

Philips do a serial RTC in their I2C range. I think it has CMOS ram as well
-
not much sense in EEPROM when you need a battery to run the clock :) Check
out
PCF8593 parts.

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2001\01\19@083521 by mike

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On Fri, 19 Jan 2001 09:10:51 -0000, you wrote:

>>Is there any SERIAL real-time clock + EEPROM out there ? Could not find it
>>from Dallas, Maxim, Atmel,...
>
>Philips do a serial RTC in their I2C range. I think it has CMOS ram as well -
>not much sense in EEPROM when you need a battery to run the clock :) Check out
>PCF8593 parts.
Many (most?)  RTC chips also have a small amount of SRAM built in. Not
much point in using EEPROM if you have a clock battery - the only
point of an eeprom here is if data robustness is really important
(e.g. calibration data) - there are sufficiently few times this is the
case that I doubt you'll find an RTC+EEPROM anywhere. EEPROMs are
hardly big or expensive so this is no big deal.  
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