DS1644 डाटा शीट PDF( Datasheet )

19-5203; Rev 4/10 DS1644/DS1644P Nonvolatile Timekeeping RAM www.maxim-ic.com FEATURES  Integrated NV SRAM, Real-Time Clock, Crystal, Power-Fail Control Circuit and Lithium Energy Source  Clock Register

DS1644LPM DS1644LPM Nonvolatile Timekeeping RAM FEATURES • Upward compatible with the DS1643AL Timekeeping RAM to achieve higher RAM density • Integrated NV SRAM, real time clock, crystal, power– fail co

19-5203; Rev 4/10 DS1644/DS1644P Nonvolatile Timekeeping RAM www.maxim-ic.com FEATURES  Integrated NV SRAM, Real-Time Clock, Crystal, Power-Fail Control Circuit and Lithium Energy Source  Clock Register