Keithley DS1243-DS1243Y free download

File name DS1243-DS1243Y.pdf

19-6076; Rev 11/11 DS1243Y 64K NV SRAM with Phantom Clock FEATURES PIN CONFIGURATION Real-Time Clock Keeps Track of Hundredths TOP VIEW of Seconds, Seconds, Minutes, Hours, Days, 1 28 VCC Date of the Month, Months, and Years RST 27 A12 2 WE 8K x 8 NV SRAM Directly Replaces A7 3 DS1243Y 26 N.C. Volatile Static RAM or EEPROM A6 4 25 A8 A5 5 24 A9 Embedded Lithium Energy Cell Maintains A4 6 23 A11 Calendar Operation and Retains RAM Data A3 7 22 OE A2 8 21 A10 Watch Function is Transparent to RAM A1 9 20 CE Operation A0 10 19 DQ7 Automatic Leap Year Compensation Valid DQ0 11 12 18 17 DQ6 DQ1 DQ5 Up to 2100 13 16 DQ2 DQ4 Lithium Energy Source is Electrically GND 14 15 DQ3 Disconnected to Retain Freshness Until Power is Applied for the First Time Encapsulated Package (720-Mil Extended) Standard 28-Pin JEDEC Pinout Full