PCF85263A是NXP公司的一款具有I2C接口的RTC产品，PCF85263A是Tiny Real-Time Clock/calendar with alarm function, battery switch-over, time stamp input, and I2C-bus，本站介绍了PCF85263A的封装应用图解、特点和优点、功能等，并给出了与PCF85263A相关的NXP元器件型号供参考。
PCF85263A - Tiny Real-Time Clock/calendar with alarm function, battery switch-over, time stamp input, and I2C-bus - 具有I2C接口的RTC - I2C - 恩智浦, LLC
The PCF85263A is a CMOS Real-Time Clock (RTC) and calendar optimized for lowpower consumption and with automatic switching to battery on main power loss. The RTCcan also be configured as a stop-watch (elapsed time counter). Three time log registerstriggered from battery switch-over as well as input driven events. Featuring clock outputand two independent interrupt signals, two alarms, I2C interface and quartz crystalcalibration.
- UL Recognized Component (PCF85263ATL)
- Provides year, month, day, weekday, hours, minutes, seconds and 100th secondsbased on a 32.768 kHz quartz crystal
- Stop-watch mode for elapsed time counting. From 100th seconds to 999999 hours
- Two independent alarms
- Battery back-up circuit
- WatchDog timer
- Three timestamp registers
- Two independent interrupt generators plus predefined interrupts at every second,minute, or hour
- Frequency adjustment via programmable offset register
- Clock operating voltage: 0.9 V to 5.5 V
- Low current; typical 0.28 μA at VDD = 3.0 V and Tamb = 25 °C
- 400 kHz two-line I2C-bus interface (at VDD = 1.8 V to 5.5 V)
- Programmable clock output for peripheral devices (32.768 kHz, 16.384 kHz,8.192 kHz, 4.096 kHz, 2.048 kHz, 1.024 kHz, and 1 Hz)
- Configurable oscillator circuit for a wide variety of quartzes: CL = 6 pF, CL = 7 pF, andCL = 12.5 pF
- Printers and copiers
- Electronic metering
- Digital cameras
- White goods
- Elapsed time counter
- Network powered devices
- Battery backed up systems
- Data loggers
- Digital voice recorders
- Mobile equipment
- Accurate high duration timer
