NXP | PCF8523TK/1,118

The PCF8523TK/1,118 is a part of PCF8523 series real-time clock. It has a operating temperature ranging from - 65°C to 150°C and its available in HVSON-8 package.

The PCF8523 is a CMOS1 Real-Time Clock (RTC) and calendar optimized for low power consumption. Data is transferred serially via an 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. An offset register allows fine-tuning of the clock.

Features:

• 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
• Battery backup input pin and switch-over circuit
• Freely programmable timer and alarm with interrupt capability
• Selectable integrated oscillator load capacitors for CL = 7 pF or CL = 12.5 pF
• Internal Power-On Reset (POR)
• Open-drain interrupt or clock output pins
• Programmable offset register for frequency adjustment

Applications:

• Time keeping application
• Battery powered devices
• Metering