The HYN1302ZN is a Real-time Clock (RTC) 3-wire Serial Clock/Calendar manufactured by Haoyu. It features 0.3µA operation at 2.5V and operates in SOP-8_150mil form factor. This RTC is RoHS certified and operates at temperatures of -40°C to +85°C. The clock/calendar function includes a count down timer, alarm, and a power down counter. The communication interface includes an I2C or SPI interface, enabling the device to be interfaced with microcontrollers, digital signal processors, or other serial devices. This device is ideal for applications requiring a reliable, low-power, RTC component.