NXP Semiconductors PCF2123
The PCF2123 is a CMOS1 Real-Time Clock (RTC) and calendar optimized for low power applications.| Part No. | PCF2123 |
|---|---|
| Datasheet | PCF2123 Download |
| Manufacturer |  NXP Semiconductors |
| Description | SPI Real time clock/calendar |
| Buy | Stock & Price |
FEATURES AND BENEFITS
● Real time clock provides year, month, day, weekday, hours, minutes, and seconds based on a 32.768 kHz quartz crystal● Low backup current while running: typical 100 nA at VDD = 2.0 V and Tamb = 25 C
● Resolution: seconds to years
● Watchdog functionality
● Freely programmable timer and alarm with interrupt capability
● Clock operating voltage: 1.1 V to 5.5 V
● 3 line SPI-bus with separate, but combinable data input and output
● Serial interface at VDD = 1.8 V to 5.5 V
● 1 second or 1 minute interrupt output
● Integrated oscillator load capacitors for CL = 7 pF
● Internal Power-On Reset (POR)
● Open-drain interrupt and clock output pins
● Programmable offset register for frequency adjustment 3.
APPLICATIONS
● Time keeping application● Battery powered devices
● Metering
● High duration timers
● Daily alarms
● Low standby power applications 1. The definition of the abbreviations and acronyms used in this data sheet can be found in Section 22. NXP Semiconductors PCF2123 SPI Real time clock/calendar 4.
