The HC89S001P is a SOP-8 RoHS compliant MCU manufactured by Holychip. It is based on the 8051 microcontroller architecture and is a powerful 8-bit MCU. It has 64kB Flash Memory, 32kB RAM and 4kB EEPROM, and integrated modules such as UART, Interface Timer, Counter, 5V A/D Converter, I2C Bus Interface, and Watch Dog Timer. It also has 12 I/O ports, 4 PWM Pins, 2 Comparators and 5 interrupts allowing for a wide range of applications. The HC89S001P operates in a wide voltage range of 1.8V to 5.5V and is an effective solution for a variety of embedded applications such as industrial controllers, embedded systems, medical devices, and consumer electronics.