PCF2129 Accurate RTC with integrated quartz crystal for industrial applications Rev.
8.
0 — 18 July 2022 Product data sheet 1 General description The 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.
For a selection of NXP Real-Time Clocks, see Table 82 2 Features and benefits • UL Recognized Component (PCF2129AT and PCF2129T) • Operating temperatur...

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