DS1248P

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 Compensation 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 (www.maxim-ic.com/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 Compatible 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 20 19 18 17 VCC A15 N.C. WE A13 A8 A9 A11 OE A10 CE DQ7 DQ6 DQ5 DQ4 DQ3 Encapsulated DIP (740-mil Flush) RST A15 A16 N.C. VCC WE OE CE DQ7 DQ6 DQ5 DQ4 DQ3 DQ2 DQ1 DQ0 GND 1 34 2 3 DS1248P 33 32 4 31 5 30 6 29 7 28 8 27 9 26 10 25 11 24 12 13 23 22 14 21 15 20 16 17 X1 GND VBAT X2 19 18 PowerCap Module Board (Uses DS9034PCX+ PowerCap) N...