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The HT66F30 is a microcontroller from HOLTEK, designed for embedded applications. Below are its key specifications, descriptions, and features:

Specifications:

• Core: 8-bit RISC
• Operating Voltage: 2.2V to 5.5V
• Clock Speed: Up to 20 MHz (internal RC oscillator)
• Flash Memory: 4K x 16 bits
• RAM: 192 bytes
• EEPROM: 256 bytes
• I/O Pins: Up to 18 (multiplexed with other functions)
• ADC: 12-bit, 8 channels
• Timers:
• 8-bit Timer x 2
• 16-bit Timer x 1
• Real-Time Clock (RTC)
• PWM: 10-bit resolution, 3 channels
• Communication Interfaces:
• SPI
• I²C
• UART
• Operating Temperature: -40°C to +85°C
• Packages: SOP-20, SSOP-20

Descriptions:

The HT66F30 is a cost-effective 8-bit microcontroller with integrated analog and digital peripherals, suitable for various control applications. It features low power consumption, high noise immunity, and robust performance in industrial and consumer electronics.

Features:

• Low Power Consumption: Supports multiple power-saving modes.
• High-Precision ADC: 12-bit resolution for accurate analog signal processing.
• Enhanced PWM: Supports motor control and LED dimming.
• On-Chip EEPROM: For data storage without external components.
• Built-in RTC: For timekeeping applications.
• Wide Operating Voltage: Compatible with battery-powered devices.
• High Noise Immunity: Suitable for industrial environments.
• Development Support: Supported by HOLTEK’s IDE and programmer tools.

This microcontroller is commonly used in appliances, motor control, sensor interfaces, and other embedded systems.