DS1501WS/T&R - Analog Devices Inc./Maxim Integrated

Manufacturer Part Number

DS1501WS/T&R

Manufacturer

analog-devices

Introduction

The DS1501 is a highly integrated real-time clock/calendar with a built-in alarm, watchdog timer, and 256 bytes of nonvolatile SRAM. The device operates from a 3V to 3.6V supply and includes a battery input for backup operation. The DS1501 provides accurate timekeeping with a power-fail-safe calendar that automatically adjusts for leap years up to the year 2100.

Product Features and Performance

Highly integrated real-time clock/calendar with alarm, watchdog timer, and 256 bytes of NVSRAM

Operates from a 3V to 3.6V supply with a battery backup input of 2.5V to 3.7V

Automatic leap year correction up to the year 2100

24-hour time format with AM/PM indication

Built-in square wave output and power-fail indication

Low power consumption with typical timekeeping current of 4mA at 3V

Product Advantages

Comprehensive timekeeping and calendar functions in a single chip

Nonvolatile SRAM for custom data storage

Backup battery input for continuous operation during power loss

Automatic leap year compensation for hassle-free operation

Compact surface-mount package for space-constrained designs

Key Reasons to Choose This Product

Highly integrated and feature-rich real-time clock solution

Low power consumption for efficient battery operation

Robust nonvolatile memory for storing critical data

Ease of use with automatic calendar adjustments

Reliable performance in a wide range of operating temperatures

Quality and Safety Features

Robust industrial temperature range of 0°C to 70°C

Stringent quality control and testing procedures

Compliance with relevant industry standards

Compatibility

The DS1501 is compatible with a wide range of microcontroller and embedded systems that require a real-time clock and calendar function.

Application Areas

Industrial automation and control systems

Portable electronics and battery-powered devices

Medical equipment and instrumentation

Building automation and security systems

Telecommunications and networking equipment

Product Lifecycle

The DS1501 is an obsolete product, meaning it is no longer in active production. However, there are several equivalent or alternative models available from Analog Devices:

DS1307: Integrated real-time clock/calendar with I2C interface

DS3231: High-precision real-time clock/calendar with temperature-compensated crystal oscillator

DS3225: Highly integrated real-time clock/calendar with alarm, EEPROM, and battery backup