PCF8563T NXP Semiconductors, PCF8563T Datasheet - Page 32

• Manufacturer Part Number: PCF8563T
• Manufacturer: NXP Semiconductors

Specifications of PCF8563T

• Bus Type: Serial (2-Wire, I2C)
• Operating Supply Voltage (typ): 2.5/3.3/5V
• Package Type: SO
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 1.8V
• Operating Temperature Classification: Industrial
• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Pin Count: 8
• Mounting: Surface Mount
• Date Format: DW:DM:M:Y
• Time Format: HH:MM:SS
• Lead Free Status / RoHS Status: Compliant

NXP Semiconductors
PCF8563
Product data sheet
14.1.1 Method 1: fixed OSCI capacitor
14.1.2 Method 2: OSCI trimmer
14.1.3 Method 3: OSCO output
14.1 Quartz frequency adjustment
By evaluating the average capacitance necessary for the application layout, a fixed
capacitor can be used. The frequency is best measured via the 32.768 kHz signal
available after power-on at pin CLKOUT. The frequency tolerance depends on the quartz
crystal tolerance, the capacitor tolerance and the device-to-device tolerance (on average
±5 ppm). Average deviations of ±5 minutes per year can be easily achieved.
Using the 32.768 kHz signal available after power-on at pin CLKOUT, fast setting of a
trimmer is possible.
Direct measurement of OSCO out (accounting for test probe capacitance).
All information provided in this document is subject to legal disclaimers.
Rev. 7 — 23 July 2010
Real-time clock/calendar
PCF8563
© NXP B.V. 2010. All rights reserved.
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