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Product attributes Property Value
Manufacturer Nuvoton Technology Corporation
Product Series W78
Packaging | Tray
Core Processor 8052
Core Size 8-Bit
Speed 40MHz
Connectivity EBI/EMI, UART/USART
Peripherals POR, WDT
Number of I/O 36
Program Memory Size 64KB (64K x 8)
Program Memory Type FLASH
EEPROM Size -
RAM Size 512 x 8
Voltage - Supply (Vcc/Vdd) 2.4V ~ 5.5V
Data Converters -
Oscillator Type External
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification -
Mounting Type Surface Mount
Supplier Device Package -
Package / Case 44-BQFP
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The Nuvoton W78E516DFG is a powerful 8-bit microcontroller built on the 8052 core, running at 40MHz. It provides 64KB of flash memory and 512 bytes of RAM, operating from 2.4V to 5.5V. Packaged in a 44-pin BQFP, it features Power-On Reset and Watchdog Timer, making it ideal for demanding embedded systems.

  • 64KB flash enables large application code storage without external memory, simplifying design.
  • 40MHz clock speed accelerates data processing and reduces response time in real-time systems.
  • BQFP package offers a compact footprint with good thermal dissipation for dense PCBs.
  • Wide voltage range (2.4V-5.5V) provides design flexibility across different power rails.

Advanced Industrial Automation

64KB flash allows storing complex control algorithms and lookup tables for robotic arms and CNC machines.

Smart Grid Meters

The 40MHz speed and 512B RAM handle real-time power calculation and communication protocols efficiently.

Medical Device Peripherals

Wide voltage range and robust POR/WDT ensure safe operation in infusion pumps and diagnostic tools.

Telecommunication Equipment

Surface-mount BQFP package enables compact PCB layouts for base station monitoring modules.

Automotive Body Electronics

With -40°C to 85°C rating, it suits window lift controllers and lighting modules in vehicles.

High-End Consumer Appliances

Large program memory supports multi-function interfaces for smart ovens and HVAC controllers.

Q: What is the maximum clock speed of the W78E516DFG?
A: It supports up to 40MHz operation, providing high throughput for complex tasks.
Q: How much flash memory is available?
A: The device has 64KB of flash program memory (64K x 8) and 512 bytes of RAM.
Q: What package does this MCU use?
A: It is offered in a 44-pin BQFP (QFP) package, suitable for surface-mount assembly.
Q: Does it have built-in protection features?
A: Yes, it includes Power-On Reset (POR) and Watchdog Timer (WDT) for system reliability.
Base Product Number : W78E516D
40MHz 512B RAM 64KB Flash 8-bit MCU 8052 Automotive BQFP-44 Industrial Nuvoton POR WDT
Q: What is the maximum clock speed of the W78E516DFG?
A: It supports up to 40MHz operation, providing high throughput for complex tasks.
Q: How much flash memory is available?
A: The device has 64KB of flash program memory (64K x 8) and 512 bytes of RAM.
Q: What package does this MCU use?
A: It is offered in a 44-pin BQFP (QFP) package, suitable for surface-mount assembly.
Q: Does it have built-in protection features?
A: Yes, it includes Power-On Reset (POR) and Watchdog Timer (WDT) for system reliability.