Table of Contents
Advertisement
OLIMEX© 2012
CHAPTER 4
THE PCF8563 CMOS REAL-TIME CLOCK
4. Introduction to the chapter
In this chapter is located the information about the heart of MOD-RTC. The information is a
modified version of the datasheet provided by its manufacturers.
4.1 The PCF8563
Provides year, month, day, weekday, hours, minutes, and seconds based on
•
32.768 kHz quartz crystal
•
Century flag
•
Clock operating voltage: 1.0 V to 5.5 V at room temperature
•
Low backup current; typical 0.25
•
400 kHz two-wire I2C-bus interface (at VDD = 1.8 V to 5.5 V)
•
Programmable clock output for peripheral devices (32.768 kHz, 1.024 kHz, 32 Hz, and 1
•
Hz)
Alarm and timer functions
•
Integrated oscillator capacitor
•
Internal Power-On Reset (POR)
•
I2C-bus slave address: read A3h and write A2h
•
Open-drain interrupt pin
•
For comprehensive information on the PCF8563 visit the NXP's web page for a datasheet. It is
highly recommended to have a look at that datasheet.
At the moment of writing the microcontroller datasheet can be found at the following link:
http://www.nxp.com/documents/data_sheet/PCF8563.pdf
A at VDD = 3.0 V and Tamb = 25 C
Page 9 of 16
MOD-RTC User's Manual
Advertisement
Table of Contents
