FH8563 is a multi-function clock/calendar chip with I2C bus communication mode and low power consumption introduced by ForDevices. FH8563 has a variety of alarm functions, timing functions, clock output functions, and interrupt output functions to complete a variety of complex timing services; it can even provide MCU with watchdog circuit functions. The internal clock circuit, oscillating circuit, low-voltage detection circuit (1.0V) and two-wire I2C bus communication method not only simplify the circuit but also increase the reliability of the chip. FH8563 as a clock chip also solves the problem of the 2000 calendar. Therefore, FH8563 is a very cost-effective clock chip; it is widely used and has excellent compatibility (pcf8563/hym8563/at8563/RTC8563/BM8563).

       The electrical parameters are as follows:

       ● FH8563 is a low-power CMOS real-time clock/calendar chip

       ● Built-in a timer including century, year, month, day, hour, minute, and second

       ● Operating voltage range: 1.0～5.5V

       ● Low sleep current: 0.25μA

       ● It has a century mark and can work from 1900 to 2099

       ● I2C bus interface with a maximum frequency of 400kHz

       ● Frequency programmable clock output

       ● Built-in alarm and timer

       ● Low voltage detection and power-on reset failure

       ● Interrupt pin open-drain output

       ● It is fully compatible with PCF8563/AT8563/HYM8563/BM8563 instead of PCF8563/AT8563/HYM8563/BM8563.

       ● Package structure: SOP-8L, MSOP-8L, DFN2*2-8L (orderable)