19-6080 Rev 11/11 www.dalsemi.com DS1315 Phantom Time Chip DESCRIPTION FEATURES The DS1315 Phantom Time Chip is a Real-Time Clock Keeps Track of Hundredths combination of a CMOS timekeeper and a of Seconds, Seconds, Minutes, Hours, Days, nonvolatile memory controller. In the absence of Date of the Month, Months, and Years power, an external battery maintains the Automatic Leap Year Correction Valid Up to timekeeping operation and provides power for a 2100 CMOS static RAM. The watch keeps track of No Address Space Required to Communicate hundredths of seconds, seconds, minutes, hours, with RTC day, date, month, and year information. The last Provides Nonvolatile Controller Functions for day of the month is automatically adjusted for Battery Backup of SRAM months with fewer than 31 days, including leap Supports Redundant Battery Attachment for year correction. The watch operates in one of two High-Reliability Applications formats: a 12-hour mode with an AM/PM Full 10% V Operating Range CC indicator or a 24-hour mode. The nonvolatile +3.3V or +5V Operation controller supplies all the necessary support Industrial (-40C to +85C) Operating circuitry to convert a CMOS RAM to a Temperature Ranges Available nonvolatile memory. The DS1315 can be interfaced with either RAM or ROM without PIN DESCRIPTION leaving gaps in memory. X1, X2 - 32.768kHz Crystal Connection WE - Write Enable PIN CONFIGURATIONS BAT1 - Battery 1 Input GND - Ground D - Data Input V 1 16 Q - Data Output CC1 X1 ROM/ RAM - ROM/RAM Mode Select 2 15 V X2 CC0 DS1315 - Chip Enable Output CEO 3 14 BAT2 WE CEI - Chip Enable Input BAT1 4 13 RST - Output Enable OE 5 12 GND OE RST - Reset D 6 11 CEI BAT2 - Battery 2 Input V - Switched Supply Output Q 7 10 CEO CC0 V - Power Supply Input CC1 8 9 ROM/RAM GND PDIP (300 mils) Pin Configurations continued at end of data sheet. 1 of 21 DS1315 Phantom Time Chip ORDERING INFORMATION VOLTAGE PART TEMP RANGE PIN-PACKAGE TOP MARK* (V) DS1315-33+ 0C to +70C 3.3 16 PDIP (300 mils) DS1315 336 DS1315N-33+ -40C to +85C 3.3 16 PDIP (300 mils) DS1315 336 DS1315-5+ 0C to +70C 5 16 PDIP (300 mils) DS1315 56 DS1315N-5+ -40C to +85C 5 16 PDIP (300 mils) DS1315 56 DS1315E-33+ 0C to +70C 3.3 20 TSSOP (4.4mm) DS1315E XXXX-336 DS1315EN-33+ -40C to +85C 3.3 20 TSSOP (4.4mm) DS1315E XXXX-336 DS1315EN-33+T&R -40C to +85C 3.3 20 TSSOP (4.4mm) DS1315E XXXX-336 DS1315E-5+ 0C to +70C 5 20 TSSOP (4.4mm) DS1315E XXXX-56 DS1315EN-5+ -40C to +85C 5 20 TSSOP (4.4mm) DS1315E XXXX-56 DS1315EN-5+T&R -40C to +85C 5 20 TSSOP (4.4mm) DS1315E XXXX-56 DS1315S-33+ 0C to +70C 3.3 16 SO (300 mils) DS1315 336 DS1315SN-33+ -40C to +85C 3.3 16 SO (300 mils) DS1315 336 DS1315S-5+ 0C to +70C 5 16 SO (300 mils) DS1315 56 DS1315SN-5+ -40C to +85C 5 16 SO (300 mils) DS1315S 56 DS1315S-5+T&R 0C to +70C 5 16 SO (300 mils) DS1315S 56 +Denotes a lead(Pb)-free/RoHS-compliant package. T&R = Tape and reel. *A + symbol located anywhere on the top mark indicates a lead-free device. An N located in the bottom right-hand corner of the top of the package denotes an industrial device. xxxx can be any combination of characters. 2 of 21