NXP PCF2129AT/2,518, Real Time Clock 128 bit Real Time Clock D:W:M:Y, 20-Pin SO-20 Surface

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Subtotal (1 pack of 5 units)*

€24.91

(exc. VAT)

€30.64

(inc. VAT)

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  • Plus 1,890 unit(s) shipping from 04 May 2026
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Units
Per unit
Per Pack*
5 - 45€4.982€24.91
50 - 95€4.882€24.41
100 - 245€4.78€23.90
250 - 995€4.688€23.44
1000 +€4.594€22.97

*price indicative

Packaging Options:
RS Stock No.:
219-4633
Mfr. Part No.:
PCF2129AT/2,518
Manufacturer:
NXP
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Brand

NXP

Product Type

Real Time Clock

Date Format

D:W:M:Y

Time Format

SS:MM:HH

Sub Type

Real Time Clock

Mount Type

Surface

Package Type

SO-20

Pin Count

20

Minimum Operating Temperature

-40°C

RTC Memory Size

128bit

Maximum Operating Temperature

85°C

Standards/Approvals

No

Height

2.65mm

Series

PCF2129

Length

12.8mm

Minimum Supply Voltage

1.8V

Automotive Standard

No

Maximum Supply Voltage

4.2V

The NXP PCF2129 is a CMOS1 real time clock (RTC) and calendar with an integrated temperature compensated crystal (Xtal) oscillator (TCXO) and a 32.768 kHz quartz crystal optimized for very high accuracy and very low power consumption. The PCF2129 has a selectable I2C bus or SPI bus, a backup battery switch over circuit, a programmable watchdog function, a timestamp function, and many other features.

Battery backed output voltage

Battery low detection function

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