PCA8565TS/1,118

The PCA8565 is a CMOS 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
• Provides year, month, day, weekday, hours, minutes and seconds based on a32.768 kHz quartz crystal
• Clock operating voltage: 0.9 V to 5.5 V at room temperature
• Extended operating temperature range: -40 °C to +125 °C
• Low current; typical 0.65 µA at V_DD = 3.0 V and T_amb = 25 °C
• 400 kHz two-wire I²C-bus interface (at V_DD = 1.8 V to 5.5 V)
• Programmable clock output for peripheral devices (32.768 kHz, 1.024 kHz, 32 Hz and1 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