PCF85263ATL/A View Datasheet(PDF) - NXP Semiconductors.
Part Name
Description
MFG CO.
PCF85263ATL/A
NXP Semiconductors.
'PCF85263ATL/A' PDF : 100 Pages View PDF
PCF85263A
Tiny Real-Time Clock/calendar with alarm function, battery
switch-over, time stamp input, and I2C-bus
Rev. 4.1 — 27 November 2015
Product data sheet
1. General description
The PCF85263A is a CMOS1 Real-Time Clock (RTC) and calendar optimized for low
power consumption and with automatic switching to battery on main power loss. The RTC
can also be configured as a stop-watch (elapsed time counter). Three time log registers
triggered from battery switch-over as well as input driven events. Featuring clock output
and two independent interrupt signals, two alarms, I2C interface and quartz crystal
calibration.
For a selection of NXP Real-Time Clocks, see Table 72 on page 90
2. Features and benefits
UL Recognized Component (PCF85263ATL)
Provides year, month, day, weekday, hours, minutes, seconds and 100th seconds
based 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 A 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, and
CL = 12.5 pF
3. Applications
Printers and copiers
Electronic metering
Digital cameras
1. The definition of the abbreviations and acronyms used in this data sheet can be found in Section 24.
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