DS1302ZN - Analog Devices Inc./Maxim Integrated

Manufacturer Part Number

DS1302ZN

Manufacturer

Analog Devices

Introduction

The DS1302ZN is a trickle-charge timekeeping chip containing a real-time clock/calendar and 31 bytes of static RAM.

Product Features and Performance

Real-time clock/calendar functionality

Leap Year compensation to the year 2100

31 bytes of battery-backed NVSRAM

Automatic backup to on-chip battery input

Trickle-charger for an external backup battery

Programmable clock output for peripheral devices

Simple 3-wire interface

Product Advantages

Low-power consumption maintains data and clock information on less than 1µA

Integrated trickle-charger accommodates external backup batteries

Leap year correction enhances long-term accuracy

Key Technical Parameters

Memory Size: 31B

Time Format: HH:MM:SS (12/24 hr)

Date Format: YY-MM-DD-dd

Interface: 3-Wire Serial

Voltage - Supply: 2V ~ 5.5V

Voltage - Supply, Battery: 2V ~ 5.5V

Current - Timekeeping (Max): 0.3µA ~ 1µA @ 2V ~ 5V

Operating Temperature: -40°C ~ 85°C

Mounting Type: Surface Mount

Quality and Safety Features

Engineered for high durability and reliable performance in various temperature ranges

Compatibility

Simple 3-wire interface compatible with a variety of microcontroller interfaces

Application Areas

Embedded systems

Consumer electronics

Communications infrastructure

Time-sensitive applications

Data loggers

Product Lifecycle

Obsolete

Potential need to seek replacements or upgrades due to discontinuation

Several Key Reasons to Choose This Product

Precision timekeeping suitable for long-term use

Integrated NVSRAM for data storage

Built-in trickle charge capability for battery longevity

Support of both 12 and 24-hour formats adapts to diverse applications

Minimal power requirements for battery-powered or energy-saving devices

Wide operating temperature range suits extreme environments

Easy to mount 8-SOIC surface mount package for compact PCB designs