NXP | PCF8563TS/5,118

The PCA8563 is a CMOS1 real time clock and calendar optimized for low power
consumption. A programmable clock output, interrupt output and voltage-low detector are
also provided. All address 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.
AEC-Q100 compliant (PCA8565TS) for automotive applications

Features:

• provides year, month, day, weekday, hours, minutes and seconds based on a
  32.768 kHz quartz crystal
• Century flag
• Clock operating voltage: 1.8 V to 5.5 V
• Extended operating temperature range: -40 °C to +125 °C
• Low backup current; typical 0.65 mA at VDD = 3.0 V and Tamb = 25 °C
• 400 kHz two-wire I2C-bus interface (at VDD = 1.8 V to 5.5 V)
• Programmable clock output for peripheral devices (32.768 kHz, 1.024 kHz, 32 Hz and
• 1 Hz)
• alarm and timer functions
• Internal power-on reset
• I2C-bus slave address: read A3h and write A2h
• Open-drain interrupt pin
• One integrated oscillator capacitor

Applications:

• Mobile telephones
• Portable instruments
• Electronic metering
• Battery powered products