Keithley DS1248-DS1248P free download

File name DS1248-DS1248P.pdf

19-6078; Rev 11/11 DS1248/DS1248P 1024K NV SRAM with Phantom Clock FEATURES Real-Time Clock (RTC) Keeps Track of PIN CONFIGURATIONS Hundredths of Seconds, Minutes, Hours, TOP VIEW Days, Date of the Month, Months, and Years RST VCC 128K x 8 NV SRAM Directly Replaces 1 32 A16 2 31 A15 Volatile Static RAM or EEPROM A14 3 DS1248 30 N.C. A12 4 29 WE Embedded Lithium Energy Cell Maintains A13 A7 5 28 Calendar Operation and Retains RAM Data A6 6 27 A8 A5 7 26 A9 Watch Function is Transparent to RAM A4 8 25 A11 Operation A3 9 24 OE A2 10 23 A10 Automatic Leap Year Compensation Valid A1 11 22 CE Up to 2100 A0 12 21 DQ7 DQ0 13 20 DQ6 Full 10% Operating Range DQ1 14 19 DQ5 Over 10 Years of Data Retention in the DQ2 15 18 DQ4 Absence of Power GND 16 17 DQ3 Lithium Energy Source is Electrically Encapsulated DIP Disconnected to Retain Freshness Until (740-mil Flush) Power is Applied for the First Time DIP Module Only Standard 32-Pin JEDEC Pinout RST 1 34 N.C. A15 2 DS1248P 33 N.C. Underwriters Laboratories (UL) Recognized A16 3 32 A14 N.C. 4