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NXP Semiconductors Electronic Components Datasheet

PCA2129 Datasheet

Automotive accurate RTC

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PCA2129
Automotive accurate RTC with integrated quartz crystal
Rev. 5 — 19 December 2014
Product data sheet
1. General description
The PCA2129 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 PCA2129
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.
For a selection of NXP Real-Time Clocks, see Table 83 on page 73
2. Features and benefits
AEC-Q100 compliant for automotive applications
Operating temperature range from 40 C to +85 C
Temperature Compensated Crystal Oscillator (TCXO) with integrated capacitors
Typical accuracy: 3 ppm from 30 C to +80 C
Integration of a 32.768 kHz quartz crystal and oscillator in the same package
Provides year, month, day, weekday, hours, minutes, seconds, and leap year
correction
Timestamp function
with interrupt capability
detection of two different events on one multilevel input pin (for example, for tamper
detection)
Two line bidirectional 400 kHz Fast-mode I2C-bus interface
3 line SPI-bus with separate data input and output (maximum speed 6.5 Mbit/s)
Battery backup input pin and switch-over circuitry
Battery backed output voltage
Battery low detection function
Power-On Reset Override (PORO)
Oscillator stop detection function
Interrupt output (open-drain)
Programmable 1 second or 1 minute interrupt
Programmable watchdog timer with interrupt
Programmable alarm function with interrupt capability
Programmable square output
Clock operating voltage: 1.8 V to 4.2 V
Low supply current: typical 0.70 A at VDD = 3.3 V
1. The definition of the abbreviations and acronyms used in this data sheet can be found in Section 21.


NXP Semiconductors Electronic Components Datasheet

PCA2129 Datasheet

Automotive accurate RTC

No Preview Available !

NXP Semiconductors
PCA2129
Automotive accurate RTC with integrated quartz crystal
3. Applications
Electronic metering for electricity, water, and gas
Precision timekeeping
Access to accurate time of the day
GPS equipment to reduce time to first fix
Applications that require an accurate process timing
Products with long automated unattended operation time
4. Ordering information
Table 1. Ordering information
Type number
Package
Name
PCA2129T
SO16
Description
Version
plastic small outline package; 16 leads; SOT162-1
body width 7.5 mm
4.1 Ordering options
Table 2. Ordering options
Product type number Orderable part number Sales item
(12NC)
Delivery form
PCA2129T/Q900/2
PCA2129T/Q900/2,51 935296923518 tape and reel, 13 inch, dry pack
5. Marking
IC
revision
2
Table 3. Marking codes
Product type number
PCA2129T/Q900/2
Marking code
PCA2129T/Q
PCA2129
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 5 — 19 December 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
2 of 84


Part Number PCA2129
Description Automotive accurate RTC
Maker NXP
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PCA2129 Datasheet PDF






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