PCA2125_08 Datasheet, PDF (1/36 Pages) NXP Semiconductors – SPI Real-time clock/calendar

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 V_DD = 3.0 V and T_amb = 25 °C
I 3-line SPI-bus with separate combinable data input and output
I Serial interface (at V_DD = 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
Type number Package
Name
Description
PCA2125TS
TSSOP14 plastic thin shrink small outline package; 14 leads;
body width 4.4 mm
Version
SOT402-1