PCF8564A

PCF8564A Real time clock and calendar Rev. 3 — 26 August 2013 Product data sheet 1. General description The PCF8564A 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 addresses and data are transferred serially via the 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. 2. Features and benefits  Provides year, month, day, weekday, hours, minutes, and seconds based on a 32.768 kHz quartz crystal  Wide clock operating voltage: 1.0 V to 5.5 V  Low back-up current typical 250 nA at 3.0 V and 25 C  400 kHz two-wire I2C interface (1.8 V to 5.5 V)  Low-voltage detector  Alarm and timer functions  Two integrated oscillator capacitors  Programmable clock output for peripheral devices (32.768 kHz, 1.024 kHz, 32 Hz, and 1 Hz)  Internal Power-On Reset (POR)  I2C slave address: read A3h, write A2h 3. Applications  Timing devices  Time of the day tracking  Process timing  Alarm  Portable instruments  Electronic metering  Battery powered products 1. The definition of the abbreviations and acronyms used in this data sheet can be found in Section 20. NXP Semiconductors PCF8564A Real time clock and calendar 4. Ordering information Table 1. Ordering information Type number Package Name PCF8564AU bare die PCF8564AUG bare die Descri...