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DS1511

Maxim Integrated
Part Number DS1511
Manufacturer Maxim Integrated
Description Y2K-Compliant Watchdog Real-Time Clocks
Published Nov 25, 2020
Detailed Description DS1501/DS1511 Y2K-Compliant Watchdog Real-Time Clocks GENERAL DESCRIPTION The DS1501/DS1511 are full-function, year 200...
Datasheet PDF File DS1511 PDF File

DS1511
DS1511

Overview
DS1501/DS1511 Y2K-Compliant Watchdog Real-Time Clocks GENERAL DESCRIPTION The DS1501/DS1511 are full-function, year 2000compliant real-time clock/calendars (RTCs) with an RTC alarm, watchdog timer, power-on reset, battery monitors, 256 bytes NV SRAM, and a 32.
768kHz output.
User access to all registers within the DS1501/DS1511 is accomplished with a byte-wide interface, as shown in Figure 8.
The RTC registers contain century, year, month, date, day, hours, minutes, and seconds data in 24-hour binary-coded decimal (BCD) format.
Corrections for day of 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.
FEATURES  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 +25°C  Day-of-Week/Date Alarm Register  Crystal Select Bit Allow RTC to Operate 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) ORDERING INFORMATION  Underwriters Laboratories (UL) Recognized PART DS1501WE+ DS1501WEN+ DS1501WEN+T&R DS1501WE+T&R VOLTAGE (V) 3.
3 3.
3 3.
3 3.
3 TEMP RANGE 0°C to +70°C -40°C to +85°C -40°C to +85°C 0°C to +70°C 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 ...


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