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PCF2129AT/2,518 The PCF2129AT/2,518 is an RTC clock and calendar IC from NXP Semiconductors. It features an I2C interface, operates at 1.8 V to 4.2 V, and supports temperature ranges from -40°C to +85°C.
Mfr Part #:

PCF2129AT/2,518

Available from 2 distributors
Mfr Name: NXP Semiconductors
NXP Semiconductors
The PCF2129AT/2,518 is an RTC clock and calendar IC from NXP Semiconductors. It features an I2C interface, operates at 1.8 V to 4.2 V, and supports temperature ranges from -40°C to +85°C.
✓ Total Stock: 1,145 pcs
$ Price Range: $5.21

PCF2129AT/2,518 Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Xingangxin ✓
Non-Authorised Inventory information
1,145 pcs
On Request
1145 pcs On Request 1 On Request On Request On Request On Request On Request
HK XINYUANXIN ELECTRONIC TECH LIMITED ✓
Non-Authorised Inventory information
On Request
On Request
On Request 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.

PCF2129AT/2,518 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Date Format
Features
Interface
Lead Spacing
Mounting Type
Operating Temperature
Supplier Device Package
Time Format
Type
Voltage
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PCF2129AT/2,518 Description

Short technical summary and product information.

The PCF2129AT/2,518 is a real-time clock and calendar integrated circuit manufactured by NXP Semiconductors. It provides accurate timekeeping functions with features including leap year handling, alarm, and timestamp capabilities. The device supports I2C and SPI interfaces, with I2C being the primary communication protocol. It operates within a voltage range of 1.8 V to 4.2 V and can function across a temperature range of -40°C to +85°C, making it suitable for a variety of industrial and consumer applications.

 

The IC is packaged in a 20-pin SO package, designed for surface mounting on printed circuit boards. Its features include a square wave output, a watchdog timer, and a crystal or TCXO support for precise timing. The device also supports battery backup switching, ensuring continuous operation during power outages. Its accuracy is specified at ±3 ppm over the temperature ranges of -15°C to +60°C and -30°C to +80°C.

 

Designed for use in embedded systems, industrial equipment, and time-sensitive applications, the PCF2129AT/2,518 offers reliable real-time clock functionality with low supply current and high precision.

PCF2129AT/2,518 Quick Information

Product Type: Real Time Clock
Canonical Name: IC RTC CLOCK/CALENDAR I2C 20SO

PCF2129AT/2,518 Compliance

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

PCF2129AT/2,518 Estimated Pricing

Qty Low High
1+ $5.21 $5.21

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

PCF2129AT/2,518 Features

  • Supports I2C and SPI interfaces
  • Operates at 1.8 V to 4.2 V
  • Temperature range from -40°C to +85°C
  • Includes leap year and alarm features
  • Battery backup switching capability

PCF2129AT/2,518 Applications

  • Used in industrial timekeeping systems
  • Suitable for embedded device RTC functions
  • Ideal for battery-powered applications
  • Supports precise timestamping in data loggers

PCF2129AT/2,518 FAQs

4 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the PCF2129AT/2,518?

The operating voltage range is 1.8 V to 4.2 V.

What communication interfaces does the PCF2129AT/2,518 support?

It supports I2C and SPI interfaces.

What is the operating temperature range of the PCF2129AT/2,518?

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

Does the PCF2129AT/2,518 support battery backup switching?

Yes, it supports battery backup switching.

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