How to interface real time clock with 8051?

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Re: real time clock

That depends which way do you prefer ..
For example, MC146818 (DS12887 ..) can be connected to the 8051-derivative via the multiplexed A/D bus, whereas the DS1302 (DS1307, PCF8585 ..) can be connected via 2-pin I²C bus ..
It’s your call mate ..

Rgds,
IanP
 
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