made automatically. APPLICATIONS Remote Systems Battery-Backed Systems Telecom Switches Office Equipment Consumer Electronics Pin Configurations and Typical Operating Circuit appear at end of data sheet. ORDERING INFORMATION PART DS1501W DS1501W+ DS1501WE DS1501WE+ DS1501WEN DS1501WEN+ DS1501WEN/T&R DS1501WEN+T&R DS1501WE/T&R DS1501WE+T&R VOLTAGE (V) 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 TEMP RANGE 0C to +70C 0C to +70C 0C to +70C 0C to +70C -40C to +85C -40C to +85C -40C to +85C -40C to +85C 0C to +70C 0C to +70C PIN-PACKAGE 28 DIP (0.600) 28 DIP (0.600) 28 TSOP 28 TSOP 28 TSOP 28 TSOP 28 TSOP/Tape & Reel 28 TSOP/Tape & Reel 28 TSOP/Tape & Reel 28 TSOP/Tape & Reel TOP MARK* DS1501W DS1501W DS1501WE DS1501WE DS1501WEN DS1501WEN DS1501WEN DS1501WEN DS1501WE DS1501WE + Denotes a lead-free/RoHS-compliant device. * A "+" anywhere on the top mark denotes a lead-free device. An N or IND denotes an industrial temperature device. Ordering Information continued at end of data sheet. Note: S

made automatically. APPLICATIONS Remote Systems Battery-Backed Systems Telecom Switches Office Equipment Consumer Electronics Pin Configurations and Typical Operating Circuit appear at end of data sheet. ORDERING INFORMATION PART DS1501W DS1501W+ DS1501WE DS1501WE+ DS1501WEN DS1501WEN+ DS1501WEN/T&R DS1501WEN+T&R DS1501WE/T&R DS1501WE+T&R VOLTAGE (V) 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 TEMP RANGE 0C to +70C 0C to +70C 0C to +70C 0C to +70C -40C to +85C -40C to +85C -40C to +85C -40C to +85C 0C to +70C 0C to +70C PIN-PACKAGE 28 DIP (0.600) 28 DIP (0.600) 28 TSOP 28 TSOP 28 TSOP 28 TSOP 28 TSOP/Tape & Reel 28 TSOP/Tape & Reel 28 TSOP/Tape & Reel 28 TSOP/Tape & Reel TOP MARK* DS1501W DS1501W DS1501WE DS1501WE DS1501WEN DS1501WEN DS1501WEN DS1501WEN DS1501WE DS1501WE + Denotes a lead-free/RoHS-compliant device. * A "+" anywhere on the top mark denotes a lead-free device. An N or IND denotes an industrial temperature device. Ordering Information continued at end of data sheet. Note: S

f month and leap year are made automatically. APPLICATIONS Remote Systems Battery-Backed Systems Telecom Switches Office Equipment Consumer Electronics Pin Configurations and Typical Operating Circuit appear at end of data sheet. ORDERING INFORMATION PART DS1501WE+ DS1501WEN+ DS1501WEN+T&R DS1501WE+T&R VOLTAGE (V) 3.3 3.3 3.3 3.3 TEMP RANGE 0C to +70C -40C to +85C -40C to +85C 0C to +70C BCD-Coded Century, Year, Month, Date, Day, Hours, Minutes, and Seconds with Automatic Leap-Year Compensation Valid Up to the Year 2100 Programmable Watchdog Timer and RTC Alarm Century Register; Y2K-Compliant RTC +3.3 (W) or +5V (Y) Operation Precision Power-On Reset Power-Control Circuitry Support System Power-On from Date/Day/Time Alarm or Key Closure/Modem-Detect Signal 256 Bytes Battery-Backed SRAM Auxiliary Battery Input Accuracy of DS1511 Better than 1 Minute/Month at +25C Day-of-Week/Date Alarm Register Crystal Select Bit Allow RTC to Operate with 6pF or 12.6pF Crystal (DS1501) Battery Voltage

nd leap year are made automatically. APPLICATIONS Remote Systems Battery-Backed Systems Telecom Switches Office Equipment Consumer Electronics Pin Configurations and Typical Operating Circuit appear at end of data sheet. ORDERING INFORMATION PART DS1501W+ DS1501WE+ DS1501WEN+ DS1501WEN+T&R DS1501WE+T&R VOLTAGE (V) 3.3 3.3 3.3 3.3 3.3 TEMP RANGE 0C to +70C 0C to +70C -40C to +85C -40C to +85C 0C to +70C PIN-PACKAGE 28 DIP (0.600) 28 TSOP 28 TSOP 28 TSOP/Tape & Reel 28 TSOP/Tape & Reel TOP MARK* DS1501W DS1501WE DS1501WEN DS1501WEN DS1501WE +Denotes a lead(Pb)-free/RoHS-compliant package. *A "+" anywhere on the top mark denotes a lead(Pb)-free device. An N or IND denotes an industrial temperature device. Ordering Information continued at end of data sheet. Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device may be simultaneously available through various sales channels. For information about devi

rate with 6pF or 12.6pF Crystal (DS1501) Battery Voltage-Level Indicator Flags Available as Chip (DS1501) or Stand-Alone Encapsulated DIP Module with Embedded Battery and Crystal (DS1511) Underwriters Laboratories (UL) Recognized ORDERING INFORMATION PART DS1501WE+ DS1501WEN+ DS1501WEN+T&R DS1501WE+T&R VOLTAGE (V) 3.3 3.3 3.3 3.3 TEMP RANGE 0C to +70C -40C to +85C -40C to +85C 0C to +70C PIN-PACKAGE 28 TSOP 28 TSOP 28 TSOP 28 TSOP TOP MARK* DS1501WE DS1501WEN DS1501WEN DS1501WE +Denotes a lead(Pb)-free/RoHS-compliant package. *A "+" anywhere on the top mark denotes a lead(Pb)-free device. An N or IND denotes an industrial temperature device. T&R = Tape and reel. Ordering Information continued at end of data sheet. Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device may be simultaneously available through various sales channels. For information about device errata, click here: www.maximintegrate

f month and leap year are made automatically. APPLICATIONS Remote Systems Battery-Backed Systems Telecom Switches Office Equipment Consumer Electronics Pin Configurations and Typical Operating Circuit appear at end of data sheet. ORDERING INFORMATION PART DS1501WE+ DS1501WEN+ DS1501WEN+T&R DS1501WE+T&R VOLTAGE (V) 3.3 3.3 3.3 3.3 TEMP RANGE 0C to +70C -40C to +85C -40C to +85C 0C to +70C BCD-Coded Century, Year, Month, Date, Day, Hours, Minutes, and Seconds with Automatic Leap-Year Compensation Valid Up to the Year 2100 Programmable Watchdog Timer and RTC Alarm Century Register; Y2K-Compliant RTC +3.3 (W) or +5V (Y) Operation Precision Power-On Reset Power-Control Circuitry Support System Power-On from Date/Day/Time Alarm or Key Closure/Modem-Detect Signal 256 Bytes Battery-Backed SRAM Auxiliary Battery Input Accuracy of DS1511 Better than 1 Minute/Month at +25C Day-of-Week/Date Alarm Register Crystal Select Bit Allow RTC to Operate with 6pF or 12.6pF Crystal (DS1501) Battery Voltage

made automatically. APPLICATIONS Remote Systems Battery-Backed Systems Telecom Switches Office Equipment Consumer Electronics Pin Configurations and Typical Operating Circuit appear at end of data sheet. ORDERING INFORMATION PART DS1501W DS1501W+ DS1501WE DS1501WE+ DS1501WEN DS1501WEN+ DS1501WEN/T&R DS1501WEN+T&R DS1501WE/T&R DS1501WE+T&R VOLTAGE (V) 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 TEMP RANGE 0C to +70C 0C to +70C 0C to +70C 0C to +70C -40C to +85C -40C to +85C -40C to +85C -40C to +85C 0C to +70C 0C to +70C PIN-PACKAGE 28 DIP (0.600) 28 DIP (0.600) 28 TSOP 28 TSOP 28 TSOP 28 TSOP 28 TSOP/Tape & Reel 28 TSOP/Tape & Reel 28 TSOP/Tape & Reel 28 TSOP/Tape & Reel TOP MARK* DS1501W DS1501W DS1501WE DS1501WE DS1501WEN DS1501WEN DS1501WEN DS1501WEN DS1501WE DS1501WE + Denotes a lead-free/RoHS-compliant device. * A "+" anywhere on the top mark denotes a lead-free device. An N or IND denotes an industrial temperature device. Ordering Information continued at end of data sheet. Note: S

nd leap year are made automatically. APPLICATIONS Remote Systems Battery-Backed Systems Telecom Switches Office Equipment Consumer Electronics Pin Configurations and Typical Operating Circuit appear at end of data sheet. ORDERING INFORMATION PART DS1501W+ DS1501WE+ DS1501WEN+ DS1501WEN+T&R DS1501WE+T&R VOLTAGE (V) 3.3 3.3 3.3 3.3 3.3 TEMP RANGE 0C to +70C 0C to +70C -40C to +85C -40C to +85C 0C to +70C PIN-PACKAGE 28 DIP (0.600) 28 TSOP 28 TSOP 28 TSOP/Tape & Reel 28 TSOP/Tape & Reel TOP MARK* DS1501W DS1501WE DS1501WEN DS1501WEN DS1501WE +Denotes a lead(Pb)-free/RoHS-compliant package. *A "+" anywhere on the top mark denotes a lead(Pb)-free device. An N or IND denotes an industrial temperature device. Ordering Information continued at end of data sheet. Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device may be simultaneously available through various sales channels. For information about devi

made automatically. APPLICATIONS Remote Systems Battery-Backed Systems Telecom Switches Office Equipment Consumer Electronics Pin Configurations and Typical Operating Circuit appear at end of data sheet. ORDERING INFORMATION PART DS1501W DS1501W+ DS1501WE DS1501WE+ DS1501WEN DS1501WEN+ DS1501WEN/T&R DS1501WEN+T&R DS1501WE/T&R DS1501WE+T&R VOLTAGE (V) 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 TEMP RANGE 0C to +70C 0C to +70C 0C to +70C 0C to +70C -40C to +85C -40C to +85C -40C to +85C -40C to +85C 0C to +70C 0C to +70C PIN-PACKAGE 28 DIP (0.600) 28 DIP (0.600) 28 TSOP 28 TSOP 28 TSOP 28 TSOP 28 TSOP/Tape & Reel 28 TSOP/Tape & Reel 28 TSOP/Tape & Reel 28 TSOP/Tape & Reel TOP MARK* DS1501W DS1501W DS1501WE DS1501WE DS1501WEN DS1501WEN DS1501WEN DS1501WEN DS1501WE DS1501WE + Denotes a lead-free/RoHS-compliant device. * A "+" anywhere on the top mark denotes a lead-free device. An N or IND denotes an industrial temperature device. Ordering Information continued at end of data sheet. Note: S

nd leap year are made automatically. APPLICATIONS Remote Systems Battery-Backed Systems Telecom Switches Office Equipment Consumer Electronics Pin Configurations and Typical Operating Circuit appear at end of data sheet. ORDERING INFORMATION PART DS1501W+ DS1501WE+ DS1501WEN+ DS1501WEN+T&R DS1501WE+T&R VOLTAGE (V) 3.3 3.3 3.3 3.3 3.3 TEMP RANGE 0C to +70C 0C to +70C -40C to +85C -40C to +85C 0C to +70C PIN-PACKAGE 28 DIP (0.600) 28 TSOP 28 TSOP 28 TSOP/Tape & Reel 28 TSOP/Tape & Reel TOP MARK* DS1501W DS1501WE DS1501WEN DS1501WEN DS1501WE + Denotes a lead-free/RoHS-compliant device. * A "+" anywhere on the top mark denotes a lead-free device. An N or IND denotes an industrial temperature device. Ordering Information continued at end of data sheet. Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device may be simultaneously available through various sales channels. For information about device erra

511W 700-DS1553WP-120 700-DS1685-5IND 700-DS1685E-3 700-DS1685S-5 700-DS1687-5IND 700-DS17285SN-5 700-DS17287-5 700-DS17487-5 700-DS17887-5 Maxim Part No. DS1340Z-33+ DS1341U+ DS1375T+ DS1388Z-33+ DS1390U-3+ DS1390U-33+ DS1391U-33+ DS1392U-33+ DS1393U-18+ DS1501WE+ DS1511W+ DS1553WP-120+ DS1685-5IND+ DS1685E-3+ DS1685S-5+ DS1687-5IND+ DS17285SN-5+ DS17287-5+ DS17487-5+ DS17887-5+ TIMEKEEPING CLOCKS Package Supply Range (V) Bus Interface SOIC-8 MAX-8 TDFN-6 SOIC-8 MAX-10 MAX-10 MAX-10 MAX-10 MAX-10 TSSOP-28 DIP-28 PCAP-34 PDIP-24W TSSOP-24 SOIC-24W DIP-24 SOIC-24W DIP-24 DIP-24 DIP-24 1.8,3,3.3,5 1.8,5.5 1.8,2,3,3.3,5 3,3.3,5 1.8,3,3.3,5 1.8,3,3.3,5 1.8,3,3.3,5 1.8,3,3.3,5 1.8,3,3.3,5 3.3,5 3.3,5 3.3,5 3,5 3,5 3,5 3,5 3,5 3,5 3,5 3,5 I2C I2C I2C I2C SPI SPI SPI 3-Wire 3-Wire Bytewide Bytewide Bytewide Multiplexed Multiplexed Multiplexed Multiplexed Multiplexed Multiplexed Multiplexed Multiplexed Package Supply Range (V) Bus Interface PDIP-8 PDIP-8 SOIC-8 SOIC-8 SOIC-8 SOIC-8 PDIP-16 SOIC-16W SOIC-