query about rtc ds1307

hi sir, i am new to this rtc ds1307 and want to know dat according to its datasheet it is battery backed....does that mean that you need not initialize it when you use it for the first time????? ...
query about rtc ds1307

hi sir, i am new to this rtc ds1307 and want to know dat according to its datasheet it is battery backed....does that mean that you need not initialize it when you use it for the first time????? ...
Real time 'times' and clock cycles

When running within the Keil simulator, how can one find out the number of clock cycles which have occured since simulation start and/or the absolute 'real time' of the simulation? TIA
Real time 'times' and clock cycles

When running within the Keil simulator, how can one find out the number of clock cycles which have occured since simulation start and/or the absolute 'real time' of the simulation? TIA
why these codes don't work ,about DS1244's Phantom Real-Time Clocks !

hi: /* these codes are about DS1244. I can make sure the circuit is correct because I can access data from DS1244 correct . but I can't use Phantom Real-Time Clocks. when I try to get the data of...