PCF2127ATSLASH1 datasheet(1/80 Pages) NXP

部件名	PCF2127AT/1

功能描述	Integrated RTC, TCXO and quartz crystal

PDF	80 Pages

Scroll/Zoom	100%

制造商	NXP [NXP Semiconductors]

网页	http://www.nxp.com

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1 / 80 page

1.

General description

The PCF2127A 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 PCF2127A

has 512 bytes of general purpose static RAM, 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 −15 °C to +60 °C

Integration of a 32.768 kHz quartz crystal and oscillator in the same package

Provides year, month, day, weekday, hours, minutes, and seconds

512 bytes of general purpose static RAM

Timestamp function

with interrupt capability

detection of two different events on one multilevel input pin (e.g. for tamper

detection)

Two line bidirectional 400 kHz Fast-mode I2C-bus interface (IOL = 3 mA at pin

SDA/CE)

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 pin

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 and system reset pin (open-drain)

Programmable 1 second or 1 minute interrupt

Programmable countdown timer with interrupt capability

Programmable watchdog timer with interrupt and reset capability

Programmable alarm function with interrupt capability

Programmable square wave open-drain output pin

Clock operating voltage: 1.2 V to 4.2 V

Low supply current: typical 0.65

μA at V

DD = 3.0 V and Tamb =25 °C

PCF2127A

Integrated RTC, TCXO and quartz crystal

Rev. 02 — 7 May 2010

Product data sheet

1.

The definition of the abbreviations and acronyms used in this data sheet can be found in Section 17.

类似零件编号 - PCF2127AT/1

制造商	部件名	数据表	功能描述
NXP Semiconductors	PCF2127AT	1Mb / 100P	Accurate RTC with integrated quartz crystal for industrial applications Rev. 8-19 December 2014

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