.. 10 Years at 85° C Read/Write Cycle: 10K 2 KB of On-chip Flash for Bootloader 2 KB of On-chip EEPROM Read/Write Cycle: 100K 14-sources 4-level Interrupts Three 16-bit Timers/Counters Full Duplex UART Compatible 80C51 Maximum Crystal ...
.. or trimmer cause there are three types of DS1869 these are: DS1869-10 which is 10K DS1869-50 a 50K version DS1869-100 the 100K version Schematic As you can see, the circuit is powered from a 9V power supply (actually any 9 V power source ...