PCA8565

Features:

`Provides year, month, day, weekday, hours, minutes and seconds based on 32.768 kHz quartz crystal
` Century flag
`Clock operating voltage: 1.8 to 5.5 V
`Extended operating temperature range: -40 to +125
`Low backup current; typical 0.5 mA at V<sub>DD</sub> = 3.0 V and T<sub>amb</sub> = 25
`400 kHz two-wire I2C-bus interface (at V_DD = 1.8 to 5.5 V)
`Programmable clock output for peripheral devices (32.768 kHz, 1024 Hz, 32 Hz and 1 Hz)
`Alarm and timer functions
`Integrated oscillator capacitor
`Internal power-on reset
`I2C-bus slave address: read A3H and write A2H
`Open-drain interrupt pin.


Application

·Automotive
·Industrial
·Other applications that require a wide operating temperature range.


Pinout




Description

The PCA8565 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 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.