PCF2129T datasheet(1/73 Pages) NXP

tên linh kiện	PCF2129T

Giải thích chi tiết về linh kiện	Accurate RTC with integrated quartz crystal for industrial

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nhà sản xuất	NXP [NXP Semiconductors]

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1.

General description

The PCF2129T 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 PCF2129T

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.

2.

Features and benefits

 Temperature Compensated Crystal Oscillator (TCXO) with integrated capacitors

 Typical accuracy:

3ppm 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

 Extra power fail detection function with input and output pins

 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 V

DD =3.3 V

PCF2129T

Accurate RTC with integrated quartz crystal for industrial

Rev. 3 — 12 February 2013

Product data sheet

1.

The definition of the abbreviations and acronyms used in this data sheet can be found in Section 18.

Số phần tương tự - PCF2129T

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
NXP Semiconductors	PCF2129T	957Kb / 86P	Accurate RTC with integrated quartz crystal for industrial applications Rev. 7-19 December 2014

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