PCF2123 datasheet(1/86 Pages) NXP

部件名	PCF2123

功能描述	Nano-power highly accurate RTC with integrated quartz crystal for automotive applications

PDF	86 Pages

Scroll/Zoom	100%

制造商	NXP [NXP Semiconductors]

网页	http://www.nxp.com

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1 / 86 page

PCA2131

Nano-power highly accurate RTC with integrated quartz

crystal for automotive applications

Rev. 1.0 — 26 July 2021

Product data sheet

1 General description

The PCA2131 is a CMOS 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 ultra low power consumption. The

PCA2131 has a selectable I2C-bus or SPI-bus, a backup battery switch-over circuit, a

programmable watchdog function, four timestamps function, and many other features.

For a selection of NXP Real-Time Clocks, see Section 15.1.

2 Features and benefits

• AEC-Q100 compliant version: PCA2131TF/Q900 for automotive applications

• Operating temperature range from -40 °C to +105 °C

• Temperature Compensated Crystal Oscillator (TCXO) with trimmed integrated

capacitors

• Clock operational up to 125 °C

• Ultra low supply current: typical 106 nA at VDD = 3.3 V

• Temperature compensated RTC, typical accuracy ±3 ppm from -40 °C to +85 °C;

±8 ppm from +85 °C to +105 °C

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

• Provides year, month, day, weekday, hours, minutes, seconds and 1/100 seconds

• Provides leap year correction

• Timestamp function

– with interrupt capability

– detection of four different events on four input pins (for example, for tamper detection)

• 2-line bidirectional 400 kHz Fast-mode I2C-bus interface

• 4-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 (POR)

• Power-On Reset Override (PORO) function

• Software reset function

• Two interrupt outputs (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: 1.2 V to 5.5 V

类似零件编号 - PCF2123

制造商	部件名	数据表	功能描述
NXP Semiconductors	PCF2123	239Kb / 54P	SPI Real time clock/calendar Rev. 01-19 November 2008
	PCF2123	1Mb / 55P	SPI Real time clock/calendar Rev. 02-4 December 2009
	PCF2123	844Kb / 63P	SPI Real time clock/calendar Time keeping application Rev. 5-27 April 2011
	PCF2123	715Kb / 65P	Tiny Real-Time Clock/calendar with alarm function and I2C-bus Rev. 7-30 March 2018
	PCF2123	677Kb / 59P	Automotive tiny Real-Time Clock/calendar with alarm function and I2C-bus Rev. 4-30 March 2018

制造商	部件名	数据表	功能描述
Maxim Integrated Produc...	DS32X35	279Kb / 21P	Accurate I2C RTC with Integrated TCXO/Crystal/FRAM Rev 0; 12/06
NXP Semiconductors	PCF2129A	490Kb / 68P	Integrated RTC, TCXO and quartz crystal Rev. 01-13 January 2010
NXP Semiconductors	PCF2127A	535Kb / 80P	Integrated RTC, TCXO and quartz crystal Rev. 02-7 May 2010
Maxim Integrated Produc...	DS32B35	410Kb / 22P	Accurate I2C RTC with Integrated TCXO/Crystal/FRAM Rev 3; 7/10
NXP Semiconductors	PCF2129T	999Kb / 73P	Accurate RTC with integrated quartz crystal for industrial Rev. 3-12 February 2013
	PCF2127	1Mb / 100P	Accurate RTC with integrated quartz crystal for industrial applications Rev. 8-19 December 2014
	PCF2129	957Kb / 86P	Accurate RTC with integrated quartz crystal for industrial applications Rev. 7-19 December 2014
	PCF2131	1,022Kb / 86P	Nano-power highly accurate RTC with integrated quartz crystal Rev. 1.0-28 May 2021
	PCF2131	1Mb / 86P	Nano-power highly accurate RTC with integrated quartz crystal Rev. 1.1 - 15 October 2021
	PCA2131	866Kb / 85P	Nano-power highly accurate RTC with integrated quartz crystal for automotive applications Rev. 2.0 - 5 October 2023