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PCA2129

NXP
Part Number PCA2129
Manufacturer NXP
Description Automotive accurate RTC
Published Sep 13, 2018
Detailed Description PCA2129 Automotive accurate RTC with integrated quartz crystal Rev. 6.0 — 18 July 2022 Product data sheet 1 General ...
Datasheet PDF File PCA2129 PDF File

PCA2129
PCA2129

Overview
PCA2129 Automotive accurate RTC with integrated quartz crystal Rev.
6.
0 — 18 July 2022 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 82 2 Features and benefits • UL Recognized Component (PCA2129T/Q900/2 ) • 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 μA at VDD = 3.
3 V 1 The definition of the abbreviations and acronyms used in this data sheet can be found in Section 20.
NXP Semiconductors PCA2129 Automotive accurate RTC with integra...


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