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DS1501 - (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.

Key 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 or +5V Operation Precision Power-On Reset Power-Control Circuitry Support System PowerOn from Date/Day/Time Alarm or Key Closure/Modem-Detect Signal 256 Bytes Battery-Backed NV SRAM Auxiliary Battery Input Accuracy of DS1511 Better than ±1 Minute/Month at +25°C Day-of-Week/Da.

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Datasheet Details

Part number DS1501
Manufacturer Dallas Semiconducotr
File Size 265.14 KB
Description (DS1501 / DS1511) Y2K-Compliant Watchdog Real-Time Clocks
Datasheet download datasheet DS1501 Datasheet

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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DS1501/DS1511 Y2K-Compliant Watchdog Real-Time Clocks www.maxim-ic.com 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.