描述 Description

The PCF85363A 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, 64 byte battery backed-up RAM.

特性 Features

UL Recognized Component (PCF85363ATL)
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
64 byte battery backed-up RAM
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

應用 Application

Elapsed time counter
Network powered devices
Printers and copiers
Battery backed up systems
Digital voice recorders
Data loggers
Mobile equipment
White goods
Digital cameras
Accurate high duration timer