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DS1302 The Analog Devices DS1302 is a clock/calendar IC featuring 31 bytes of battery-backed RAM and a simple 3-wire serial interface. It operates from 2V to 5.5V and is available in an 8-PDIP package.
Mfr Part #:

DS1302

Available from 3 distributors
Mfr Name: Analog Devices / Maxim Integrated
Analog Devices / Maxim Integrated
The Analog Devices DS1302 is a clock/calendar IC featuring 31 bytes of battery-backed RAM and a simple 3-wire serial interface. It operates from 2V to 5.5V and is available in an 8-PDIP package.
✓ Total Stock: 14,048 pcs

DS1302 Available from 3 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Components Technology Group, Inc. ✓
Non-Authorised Inventory information
10,255 pcs
On Request
10255 pcs On Request 1 On Request On Request On Request On Request On Request
Xingangxin ✓
Non-Authorised Inventory information
3,121 pcs
On Request
3121 pcs On Request 1 On Request On Request On Request On Request On Request
Smaxon Electronics ✓
Non-Authorised Inventory information
672 pcs
On Request
672 pcs On Request 1 On Request On Request 06+ On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

DS1302 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
Tape & Reel
Time Format
Type
Voltage
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DS1302 Description

Short technical summary and product information.

The Analog Devices DS1302 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.

 

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, using less than 300nA at 2.0V.

 

The DS1302 is available in an 8-pin DIP package, minimizing space requirements. An optional industrial temperature range of -40°C to +85°C is also supported for operation in a wide range of applications. The device is UL recognized.

 

Key features include leap year compensation, non-volatile RAM, and a trickle-charger. The time format can be set to 12-hour or 24-hour with an AM/PM indicator, and the date format is YY-MM-DD-dd.

DS1302 Quick Information

Product Type: Real Time Clock
Canonical Name: DS1302 Clock/Calendar IC
Subcategory: Real Time Clocks

DS1302 Compliance

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

DS1302 Features

  • Manages all timekeeping functions.
  • Includes 31 bytes of battery-backed RAM.
  • Simple 3-wire serial interface.
  • Operates from 2.0V to 5.5V.
  • Low power consumption.

DS1302 Applications

  • Ideal for timekeeping applications.
  • Suitable for battery-backed systems.
  • Used in microcontrollers.
  • Supports industrial temperature ranges.

DS1302 FAQs

6 frequently asked questions generated from this part’s specifications.
What are the primary functions of the DS1302?

The DS1302 completely manages all timekeeping functions, including seconds, minutes, hours, date of the month, month, day of the week, and year with leap-year compensation valid up to 2100. It also provides 31 x 8 battery-backed general-purpose RAM.

What voltage range does the DS1302 operate within?

The DS1302 operates from 2.0V to 5.5V.

What is the current consumption of the DS1302?

The DS1302 uses less than 300nA at 2.0V.

What type of interface does the DS1302 use?

The DS1302 uses a simple 3-wire serial interface.

What package is the DS1302 available in?

The DS1302 is available in an 8-pin DIP package.

What is the operating temperature range for the DS1302?

The standard operating temperature range is 0°C to 70°C, with an optional industrial temperature range of -40°C to +85°C.

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