[SOLVED] Suggestions for RTC with an in-built battery and crystal

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Surendhar Murugan

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Hello Everybody
I Need a RTC which has to work either in Serial or in parallel communication with an in-built battery and crystal. I couldn't able to get it. Please suggest me on this


Surendhar Murugan
 

Re: Suggest RTC

I already searched in digi-key and in mouser electronics also. I couldn't able to find it and I don't want i2c interface i want either 3 wire-serial or parallel interface with the micro controller.

Surendhar Murugan
 

Re: Suggest RTC

i googled for rtc and only one name is suggested but i dont know that it is regular part or not.
 

Suggest RTC

Hi,
One RTC is MAX6902 that has SPI-compatible interface.

3-wire or SPI:
DS1392
DS1393
DS1302
DS1305
DS1306
DS1394
DS3234
DS1390
DS1391
**broken link removed**
**broken link removed**

Parallel:
**broken link removed**

Hope this helps.
Tahmid.
 

Re: Suggest RTC

I am using an ST Micoelectronics M41T82SM6F in a new design, and it looks like a nice device. Check the rest of their range for chips that suit your interface requirements.

I refuse to use any Dallas Semiconductor chips anymore. Ever since they were bought by Maxim, they have been discontinuing DS parts left and right.

Edit: the M41T93 has a SPI interface
 

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