What are the chip models of perpetual calendar?

RX8025，PCF8563。 RX8025 calendar chip has USB charging, PM2 point 5 sensor interface, SHT20 temperature and humidity sensor interface, infrared receiving interface, etc. PCF8563 is a low-power CMOS calendar chip, which provides 1 programmable clock output, 1 interrupt output and power-off detector. All addresses and data are transmitted serially through I2C bus interface.