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DS1302Z The Dallas Semiconductor DS1302Z is a real-time clock/calendar chip with 31 bytes of battery-backed RAM. It features a simple 3-wire serial interface and low power consumption.
Mfr Part #:

DS1302Z

Available from 2 distributors
Mfr Name: Dallas Semiconductor
Dallas Semiconductor
The Dallas Semiconductor DS1302Z is a real-time clock/calendar chip with 31 bytes of battery-backed RAM. It features a simple 3-wire serial interface and low power consumption.
✓ Total Stock: 150 pcs
$ Price Range: $0.30

DS1302Z Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Chanetech ✓
Non-Authorised Inventory information
90 pcs
On Request
90 pcs On Request 1 On Request On Request On Request On Request On Request
Partservice ✓
Non-Authorised Inventory information
60 pcs
On Request
60 pcs On Request 1 On Request On Request On Request 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.

DS1302Z Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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Automotive Grade
Industrial Grade
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Medical Grade
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DS1302Z Description

Short technical summary and product information.

The Dallas Semiconductor DS1302Z is a versatile real-time clock (RTC) and calendar chip designed for accurate timekeeping functions. It manages seconds, minutes, hours, day, date, month, and year, including leap-year compensation valid up to 2100. The device includes 31 bytes of battery-backed general-purpose RAM for data storage.

 

Interfacing with microcontrollers is simplified through a 3-wire serial interface (CE, I/O, SCLK), supporting both single-byte and burst mode data transfers. The DS1302Z 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.

 

Available in an 8-pin SOIC package, the DS1302Z is suitable for applications requiring minimal board space. It also offers an optional industrial temperature range of -40°C to +85°C, supporting operation in demanding environments. The device is UL recognized and lead-free compliant.

 

This timekeeping chip is ideal for embedded systems, data loggers, and any application requiring accurate time tracking and data retention during power outages.

DS1302Z Quick Information

Product Type: Real-Time Clock IC
Canonical Name: DS1302Z Real-Time Clock/Calendar IC
Subcategory: Timekeeping ICs

DS1302Z Compliance

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

DS1302Z Estimated Pricing

Qty Low High
1+ $0.30 $0.30

Estimated market price range - modelled values for guidance only, not live distributor offers.

DS1302Z Features

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

DS1302Z Applications

  • Embedded systems timekeeping.
  • Data logging applications.
  • Battery-backed systems.
  • Industrial control systems.
  • Consumer electronics.

DS1302Z FAQs

7 frequently asked questions generated from this part’s specifications.
What are the primary functions of the DS1302Z?

The DS1302Z completely manages all timekeeping functions, counting seconds, minutes, hours, date, month, day of the week, and year with leap-year compensation up to 2100. It also provides 31 bytes of battery-backed general-purpose RAM.

What voltage range does the DS1302Z operate within?

The DS1302Z operates fully from 2.0V to 5.5V.

How much power does the DS1302Z consume?

The DS1302Z uses less than 300nA at 2.0V.

What type of interface does the DS1302Z use?

The DS1302Z uses a simple 3-wire serial interface (CE, I/O, SCLK) that is TTL-compatible.

What is the operating temperature range for the DS1302Z?

The DS1302Z has an optional industrial temperature range of -40°C to +85°C.

What package options are available for the DS1302Z?

The DS1302Z is available in 8-pin DIP and 8-pin SOIC packages.

Is the DS1302Z lead-free compliant?

Yes, the DS1302Z is lead-free compliant, indicated by a '+' in the part number.

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