PCA2125 Datasheet | NXP Semiconductors

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 k Hz 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 binable 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 .. NXP Semiconductors SPI Real-time clock/calendar 5. Marking Table 2. Marking codes Marking code PCA2125 Type number PCA2125TS 6. Block diagram OSCI OSCILLATOR 32.768 k Hz 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 0Eh 0Fh Timer_control Countdown_timer 001aah664 Fig 1. Block diagram of PCA2125 PCA2125_1 © NXP B.V. 2008. All rights reserved. Product data sheet Rev. 01 - 28 July 2008 2...