Description
The PCF8523 is a CMOS1 Real-Time Clock (RTC) and calendar optimized for low power consumption.
Features
- Provides year, month, day, weekday, hours, minutes, and seconds based on a 32.768 kHz quartz crystal.
- Resolution: seconds to years.
- Clock operating voltage: 1.0 V to 5.5 V.
- Low backup current: typical 150 nA at VDD = 3.0 V and Tamb = 25 C.
- 2 line bidirectional 1 MHz Fast-mode Plus (Fm+) I2C interface, read D1h, write D0h2.
- Battery backup input pin and switch-over circuit.
- Freely programmable timer and alarm with interrupt capability.
- Selectable integrate.
PCF8523-NXP.pdf
