1. PCF8563 clock chipintroduce
PCF8563 is an industrial -grade interior I2C launched by PhilipsBus interfaceFunction with a very low power consumption multifunctional clock/calendar chip.PCF8563's multiple alarm functions,TimerFunction, clock output function, and interrupt output function can complete various complex timing services, and even can even be used asSingle -chip machinesupplyGangFunction.It is a very cost -effectiveClock chipIt has been widely used in meters, water meters, gas meters,Telephone, Fax machines, portable instruments, and battery power supply instruments and other products.
PCF8563Main performance indicators:
★ Power supply can be used for backup batteries
★Wide voltage range 1.0 ~ 5.5V
★Ultra -low power consumption: typical value is 0.25UA
★ Enter/output through the serial input/output of the I2C bus
★The output frequency of the programmable clock is: 32.768kHz, 1024Hz, 32Hz, 1Hz.
★Four alarm functions and timer functions
★Contains reset circuit, oscillator capacitor and power loss detection circuit
★Discard interruption output
★ 400kHz high -speed reading and writing
2. Module interface description
Battery installation interface on the left
Pay attention to the direction during installation, install according to the direction on the picture
The right INT interrupt output (generally not used)
COT clock output end (generally not used)
SCL IIC clock interface Pick up the single -chip machine IO port
SDA IICDigital interface Pick up the single -chip machine IO port
GND Module land Externally
VCC Power interface 3.3V-5V external connection
Third, test description
Download the program in the 51 folder in the attached information to the STC89C52 single -chip microcomputer (the program is very good, and you can use it in other single -chip microcomputers). After powering, open the serial port to receive the running clock information.