PCF8563 Datasheet, PDF (1/32 Pages) NXP Semiconductors – Real-time clock/calendar

PCF8563
Real-time clock/calendar
Rev. 06 — 21 February 2008
Product data sheet
1. General description
The PCF8563 is a CMOS real-time clock/calendar optimized for low power consumption.
A programmable clock output, interrupt output and voltage-low detector are also provided.
All addresses and data are transferred serially via a two-line bidirectional I²C-bus.
Maximum bus speed is 400 kbit/s. The built-in word address register is incremented
automatically after each written or read data byte.
2. Features
I Provides year, month, day, weekday, hours, minutes and seconds based on
32.768 kHz quartz crystal
I Century flag
I Clock operating voltage: 1.8 V to 5.5 V
I Low backup current; typical 0.25 µA at V_DD = 3.0 V and T_amb = 25 °C
I 400 kHz two-wire I²C-bus interface (at V_DD = 1.8 V to 5.5 V)
I Programmable clock output for peripheral devices (32.768 kHz, 1024 Hz, 32 Hz and
1 Hz)
I Alarm and timer functions
I Integrated oscillator capacitor
I Internal power-on reset
I I²C-bus slave address: read A3h and write A2h
I Open-drain interrupt pin
I ElectroStatic Discharge (ESD) protection exceeds 2000 V Human Body Model (HBM)
per JESD22-A114, 200 V Machine Model (MM) per JESD22-A115 and 2000 V
Charged Device Model (CDM) per JESD22-C101
I Latch-up testing is done to JEDEC standard JESD78 which exceeds 100 mA
3. Applications
I Mobile telephones
I Portable instruments
I Electronic metering
I Battery powered products