Holtek launched the HT45F6530 MCU for AC power supply AVR (Automatic Voltage Regulator), which can realize AC input and output voltage and zero-crossing measurement, suitable for AC power supply products. The HT45F6530 has two built-in OPA and 12-bit DACs for input/output voltage measurement, and CMP can quickly respond to accurate zero-crossing detection. The delay time of the relay is measured and recorded in EEPROM, which can reduce external components and eliminate manual calibration. And reduce PCB BOM cost. The HT45F6530 has system resources such as 2K×15 Flash Program ROM, 128 Byte Data RAM, 32 Byte True EEPROM, Timer Module, etc. It provides three package types: 20-pin NSOP, 24-pin SSOP and 24-pin SOP. Holtek official website has complete The AVR application scheme is available for reference. Shenzhen Zpal Technology Co.,Ltd , https://www.zpal-vape.com