N76E003AQ20 is a high-speed 1T 8051 core 8-bit microcontroller chip launched by Nuvoton, featuring high integration and high anti-interference capabilities. Core Hardware Parameters Core and Main Frequency: Adopts the 1T 8051 microprocessor architecture, with a maximum operating frequency of up to 16MHz. Memory Configuration: Built-in 18KB Flash program storage space and 1KB SRAM, supporting configurable Data Flash. Electrical Characteristics: Supports a wide operating voltage of 2.4V~5.5V, with an operating temperature range covering -40℃~105℃. Anti-interference Capability: Equipped with 7KV ESD electrostatic protection and 4KV EFT pulse anti-interference capability, demonstrating excellent industrial-grade reliability. Peripherals and Interface Configuration Communication Interfaces: Equipped with 2 sets of UART (up to 115200bps), 1 set of SPI (up to 8MHz), and 1 set of I²C (up to 400KHz). Analog Peripherals: Integrated 8-channel 12-bit ADC with a maximum conversion rate of 500ksps, and built-in 6-channel PWM output with dead-time control. Clock System: Built-in 16MHz high-precision RC oscillator with an error of less than 2%, enabling stable operation without an external crystal oscillator. I/O Resources: Provides 18 general-purpose I/O ports in a 20-pin package, meeting the needs of most small-scale control scenarios. Packaging and Procurement Information Packaging Specifications: Adopts a 3x3mm QFN-20-EP exposed pad package, which is a surface-mount device, with a full tray packaging quantity of 3000PCS. Market Price: The unit price of brand-new original chips on mainstream e-commerce platforms ranges from 1.9 yuan to 3.5 yuan, with tiered discounts for different procurement volumes. Programming Support: Fully supports three burning methods: ISP (In-System Programming), ICP (In-Circuit Programming), and IAP (In-Application Programming), making development and debugging conven