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DS1687-3 Datasheet(PDF) 1 Page - Maxim Integrated Products |
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DS1687-3 Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 34 page 1 of 34 19-5215; Rev 10/12 FEATURES Incorporates Industry-Standard DS1287 PC Clock plus Enhanced Features Such as Y2K Compliant +3V or +5V Operation 64-Bit Silicon Serial Number Power-Control Circuitry Supports System Power-On from Date/Time Alarm or Key Closure 32kHz Output for Power Management Crystal-Select Bit Allows RTC to Operate with 6pF or 12.5pF Crystal SMI Recovery Stack 242 Bytes Battery-Backed NV RAM Auxiliary Battery Input RAM Clear Input Century Register Date Alarm Register Compatible with Existing BIOS for Original DS1287 Functions Available as Chip (DS1685) or Stand-Alone Encapsulated DIP (EDIP) with Embedded Battery and Crystal (DS1687) Timekeeping Algorithm Includes Leap-Year Compensation Valid Through 2099 Underwriters Laboratory (UL) Recognized APPLICATIONS Embedded Systems Utility Meters Security Systems Network Hubs, Bridges, and Routers PIN CONFIGURATIONS PLCC AD0 AD1 AD2 AD3 AD4 AD5 RCLR VBAT IRQ KS RD GND WR 25 24 23 22 21 20 19 5 6 7 8 9 10 11 4 3 2 1 28 27 26 12 13 14 15 16 17 18 N.C. DS1685Q PDIP (0.600″)/ SO (0.300″)/ TSSOP (0.173″) 1 2 3 4 5 6 7 8 9 10 24 23 22 21 20 19 18 17 16 15 VCC SQW VBAUX RCLR VBAT IRQ KS RD GND WR PWR X1 X2 AD0 AD1 AD2 AD3 AD4 AD5 AD6 11 12 14 13 AD7 GND ALE CS DS1685/ DS1685S/ DS1685E EDIP (0.740″) 1 2 3 4 5 6 7 8 9 10 24 23 22 21 20 19 18 17 16 15 VCC SQW VBAUX RCLR N.C. IRQ KS RD N.C. WR PWR N.C. N.C. AD0 AD1 AD2 AD3 AD4 AD5 AD6 11 12 14 13 AD7 GND ALE CS DS1687 TOP VIEW DS1685/DS1687 3V/5V Real-Time Clocks |
Similar Part No. - DS1687-3_12 |
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Similar Description - DS1687-3_12 |
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