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PCA2125

NXP Semiconductors
Part Number PCA2125
Manufacturer NXP Semiconductors
Description SPI Real-time clock/calendar
Published Jul 17, 2010
Detailed Description www.DataSheet4U.com PCA2125 SPI Real-time clock/calendar Rev. 01 — 28 July 2008 Product data sheet 1. General descript...
Datasheet PDF File PCA2125 PDF File

PCA2125
PCA2125

Overview
www.
DataSheet4U.
com PCA2125 SPI Real-time clock/calendar Rev.
01 — 28 July 2008 Product data sheet 1.
General description The PCA2125 is a CMOS real-time clock/calendar optimized for low-power consumption and an operating temperature up to 125 °C.
Data is transferred via a Serial Peripheral Interface (SPI) bus with a maximum data rate of 6.
0 Mbit/s.
An alarm and timer function are also available with the possibility to generate a wake-up signal on an interrupt pin.
AEC Q100 qualified for automotive applications.
2.
Features I Provides year, month, day, weekday, hours, minutes and seconds based on 32.
768 kHz quartz crystal I Resolution: seconds to years I Clock operating voltage: 1.
3 V to 5.
5 V I Low backup current: typical 0.
55 µA at VDD = 3.
0 V and Tamb = 25 °C I 3-line SPI-bus with separate combinable data input and output I Serial interface (at VDD = 1.
6 V to 5.
5 V) I 1 second or 1 minute interrupt output I Freely programmable timer with interrupt capability I Freely programmable alarm function with interrupt capability I Integrated oscillator capacitor I Internal power-on reset I Open-drain interrupt pin 3.
Applications I Automotive time keeping application I Metering 4.
Ordering information Table 1.
Ordering information Package Name PCA2125TS TSSOP14 Description plastic thin shrink small outline package; 14 leads; body width 4.
4 mm Version SOT402-1 Type number www.
DataSheet4U.
com NXP Semiconductors PCA2125 SPI Real-time clock/calendar 5.
Marking Table 2.
Marking codes Marking code PCA2125 Type number PCA2125TS 6.
Block diagram OSCI OSCILLATOR 32.
768 kHz OSCO MONITOR 00h 01h 0Dh POWER-ON RESET TIME 02h VDD VSS 03h 04h 05h 06h 07h WATCHDOG 08h Seconds Minutes Hours Days Weekdays Months Years CONTROL Control_1 Control_2 CLKOUT_control DIVIDER CLOCK OUT CLKOUT ALARM FUNCTION 09h SDO SDI SCL CE TIMER FUNCTION SPI INTERFACE 0Ah 0Bh 0Ch Minute_alarm Hour_alarm Day_alarm Weekday_alarm INTERRUPT INT PCA2125 0Eh 0Fh Timer_control Countdown_timer 001aah664 ...


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