The best choosing for Ethernet and Real time clock applications

[cllunlu]

Hello

I am designing a board has ethernet connection and real time clock. I wanna use PIC18F66J65. Already Ethernet connection is there as a internal in pic18f66j65. But I have problem for real time clock application. Before I used DS1307 for microcontrollers that work on the 5V. I didnt satisfeid it.Because usually restart and starts produced date time. I wanted use DS3234. But it is very expensive. Should I use internal rtc via Timer1.

As a result, Can you advise how can I solve RTC problem. Which solution is better and works stable. Or we may change microcontroller models that have ethernet and internal rtc.

Thanks you

 

[FvM]

Internal RTC is effectively useless for low power backup solutions, e.g. lithium batteries due to large quiescent currents. I don't exactly understand your problems with DS1307.

I'm using DS1337 and RTC-8564 (has internal crystal) without a problem in many applications.

 

[cllunlu]

Thank FvM for your reply.
I have problem that should I use which solution for RTC ?

The best solution?

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Which I prefer rtc ic that works with . Anybody advise any model...