PCF85063A: Tiny Real-Time Clock/calendar with alarm function and I²C-bus

Overview

The PCF85063ATL is a CMOS Real-Time Clock (RTC) and calendar optimized for low power consumption. An offset register allows fine-tuning of the clock. All addresses and data are transferred serially via the two-line bidirectional I²C-bus. Maximum data rate is 400 kbit/s. The register address is incremented automatically after each written or read data byte.

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Features

Provides year, month, day, weekday, hours, minutes, and seconds based on a 32.768 kHz quartz crystal
Clock operating voltage: 0.9 V to 5.5 V
Low current; typical 0.27 μA at V_DD = 3.0 V and T_amb = 25 °C
400 kHz two-line I²C-bus interface (at V_DD = 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)
Selectable integrated oscillator load capacitors for C_L = 7 pF or C_L = 12.5 pF
Alarm function
Countdown timer
Minute and half minute interrupt
Internal Power-On Reset (POR)
Programmable offset register for frequency adjustment

Target Applications

Digital still camera
Digital video camera
Printers
Copy machines
Mobile equipment
Battery powered devices

MoreLess

Features

Provides year, month, day, weekday, hours, minutes, and seconds based on a 32.768 kHz quartz crystal
Clock operating voltage: 0.9 V to 5.5 V
Low current; typical 0.27 μA at V_DD = 3.0 V and T_amb = 25 °C
400 kHz two-line I²C-bus interface (at V_DD = 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)
Selectable integrated oscillator load capacitors for C_L = 7 pF or C_L = 12.5 pF
Alarm function
Countdown timer
Minute and half minute interrupt
Internal Power-On Reset (POR)
Programmable offset register for frequency adjustment