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DS1302ZN+ The Analog Devices DS1302ZN+ is a Real-Time Clock/Calendar IC featuring 31 bytes of RAM and a 3-wire serial interface. It operates from 2V to 5.5V and is housed in an 8-SOIC package.
Mfr Part #:

DS1302ZN+

Available from 2 distributors
Mfr Name: Analog Devices / Maxim Integrated
Analog Devices / Maxim Integrated
The Analog Devices DS1302ZN+ is a Real-Time Clock/Calendar IC featuring 31 bytes of RAM and a 3-wire serial interface. It operates from 2V to 5.5V and is housed in an 8-SOIC package.
✓ Total Stock: 65 pcs

DS1302ZN+ Available from 2 distributors

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✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Risen Electronics ✓
Non-Authorised Inventory information
60 pcs
On Request
60 pcs On Request 1 On Request On Request On Request On Request 2026-02-23 21:33:16
Trace Tec ✓
Non-Authorised Inventory information
5 pcs
On Request
5 pcs On Request 1 On Request On Request On Request On Request On Request
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DS1302ZN+ Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Date Format
Features
Interface
Lead Spacing
Memory Size
Mounting Type
Operating Temperature
Supplier Device Package
Supplier Package
Time Format
Type
Voltage
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DS1302ZN+ Description

Short technical summary and product information.

The DS1302ZN+ from Analog Devices is a trickle-charge timekeeping chip that manages all timekeeping functions, including seconds, minutes, hours, date, month, day of the week, and year with leap-year compensation up to 2100. It includes 31 bytes of battery-backed general-purpose RAM for data storage.

 

This IC features a simple 3-wire serial interface (CE, I/O, SCLK) that is TTL-compatible and supports single-byte or burst mode data transfer. It operates over a wide voltage range of 2.0V to 5.5V and consumes very low power, drawing less than 300nA at 2.0V, which extends battery backup run time.

 

The DS1302ZN+ is available in an 8-pin SOIC package, minimizing space requirements. It supports an optional industrial temperature range of -40°C to +85°C, making it suitable for a wide range of applications. The device also offers dual power pins for primary and backup power supplies and a programmable trickle charger.

 

Key features include leap year compensation, NVSRAM, and a trickle-charger. The time format can be displayed in 12 or 24-hour format with an AM/PM indicator, and the date format is YY-MM-DD-dd. This component is designed for surface mounting.

DS1302ZN+ Quick Information

Product Type: Real Time Clock
Canonical Name: DS1302ZN+ Real-Time Clock/Calendar IC
Subcategory: Clock/Calendar

DS1302ZN+ Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected
Lead Free: true

DS1302ZN+ Features

  • Manages all timekeeping functions.
  • Includes 31 bytes of battery-backed RAM.
  • Simple 3-wire serial interface.
  • Low power operation extends battery life.
  • Available in 8-SOIC surface mount package.

DS1302ZN+ Applications

  • Ideal for battery-backed timekeeping.
  • Suitable for industrial temperature ranges.
  • Used in embedded systems requiring clocks.
  • Supports leap year compensation.

DS1302ZN+ FAQs

6 frequently asked questions generated from this part’s specifications.
What are the operating voltage and current for the DS1302ZN+?

The DS1302ZN+ operates from 2V to 5.5V and consumes 0.3µA to 1µA at 2V to 5V.

What is the operating temperature range for this real-time clock IC?

The operating temperature range is -40°C to +85°C.

How much RAM is available on the DS1302ZN+?

The DS1302ZN+ has 31 bytes of RAM.

What type of interface does the DS1302ZN+ use?

It uses a 3-Wire Serial interface.

What package is the DS1302ZN+ available in?

The DS1302ZN+ is available in an 8-SOIC (0.154", 3.90mm Width) surface mount package.

Does the DS1302ZN+ support leap year compensation?

Yes, the DS1302ZN+ supports leap year compensation valid up to 2100.

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