W78E516DDG 8-bit 8052 Microcontroller – 64KB Flash – PDIP-40 – Nuvoton

The W78E516DDG from Nuvoton is a high-performance 8-bit microcontroller based on the enhanced 8052 core, offering improved speed, flexibility, and memory capacity for modern embedded applications. With 64 KB of in-system programmable Flash and 512 bytes of on-chip RAM, this MCU provides robust program storage and reliable data handling for a wide range of designs.

Operating at speeds up to 40 MHz in 12T mode (with an efficient 6T mode also available), the W78E516DDG delivers fast instruction execution while retaining full compatibility with the standard 8051/8052 instruction set. Its wide 2.4V to 5.5V operating voltage range makes it suitable for both battery-powered and 5V logic systems.

This microcontroller integrates 32 programmable I/O pins, three 16-bit timer/counters, a full-duplex UART/USART, and essential system features such as a watchdog timer (WDT) and power-on reset (POR) for improved reliability. Packaged in a standard 40-pin PDIP, it is ideal for through-hole prototyping, educational systems, and long-life industrial hardware.

Key Specifications:

• Manufacturer: Nuvoton

• Part Number: W78E516DDG

• CPU Core: 8-bit 8052-based

• Clock Speed: Up to 40 MHz (12T mode; optional 6T mode)

• Program Memory: 64 KB Flash

• RAM: 512 bytes

• Operating Voltage: 2.4V to 5.5V

• I/O Pins: 32 programmable I/Os

• Peripherals:
  – Three 16-bit timer/counters
  – Full-duplex UART/USART
  – Watchdog timer (WDT)
  – Power-on reset (POR)

• Package: 40-pin PDIP (through-hole)

Package Includes:
1 x W78E516DDG 8-bit Microcontroller

Note: Image is for representation purpose only.