DS1248 Datasheet | Maxim Integrated

19-6078; Rev 11/11 DS1248/DS1248P 1024K NV SRAM with Phantom Clock Features - Real-Time Clock (RTC) Keeps Track of Hundredths of Seconds, Minutes, Hours, Days, Date of the Month, Months, and Years - 128K x 8 NV SRAM Directly Replaces Volatile Static RAM or EEPROM - Embedded Lithium Energy Cell Maintains Calendar Operation and Retains RAM Data - Watch Function is Transparent to RAM Operation - Automatic Leap Year pensation Valid Up to 2100 - Full 10% Operating Range - Over 10 Years of Data Retention in the Absence of Power - Lithium Energy Source is Electrically Disconnected to Retain Freshness Until Power is Applied for the First Time - DIP Module Only Standard 32-Pin JEDEC Pinout - Underwriters Laboratories (UL) Recognized (.maxim-ic./qa/info/ul/) - PowerCap Module Board Only Surface Mountable Package for Direct Connection to PowerCap Containing Battery and Crystal Replaceable Battery (PowerCap) Pin-for-Pin patible with DS1244P and DS1251P PIN CONFIGURATIONS TOP VIEW RST A16 A14 A12 A7 A6 A5 A4 A3 A2 A1 A0 DQ0 DQ1 DQ2 GND 1 2 3 DS1248 4 5 6 7 8 9 10 11 12 13 14 15 16 32 31 30 29 28 27 26 25 24 23 22 21...