PCF8523 Datasheet Real-Time Clock/Calendar

Manufacturer: NXP Semiconductors

Datasheet Details

The PCF8523 is a CMOS1 Real-Time Clock (RTC) and calendar optimized for low power consumption.

Data is transferred serially via the I2C-bus with a maximum data rate of 1000 kbit/s.

Alarm and timer functions are available with the possibility to generate a wake-up signal on an interrupt pin.

PCF8523 Real-Time Clock (RTC) and calendar Rev.

7 — 28 April 2015 Product data sheet 1.

Provides year, month, day, weekday, hours, minutes, and seconds based on a 32.768 kHz quartz crystal.
Resolution: seconds to years.
Clock operating voltage: 1.0 V to 5.5 V.
Low backup current: typical 150 nA at VDD = 3.0 V and Tamb = 25 C.
2 line bidirectional 1 MHz Fast-mode Plus (Fm+) I2C interface, read D1h, write D0h2.
Battery backup input pin and switch-over circuit.
Freely programmable timer and alarm with interrupt capability.
Selectable integrate.

Part Number	Description
PCF85263A	Tiny Real-Time Clock/Calendar
PCF85053A	Bootable CPU RTC
PCF85063A	Tiny Real-Time Clock/calendar
PCF85063ATL	Tiny Real-Time Clock/calendar
PCF85063BTL	Tiny Real-Time Clock/calendar
PCF85063TP	Tiny Real-Time Clock/calendar
PCF85102C-2	256 x 8-bit CMOS EEPROMs
PCF85103C-2	256 x 8-bit CMOS EEPROMs
PCF85116-3	2048 x 8-bit CMOS EEPROM
PCF85134	Universal LCD segment driver