W78E516DLG

Microcontrollers Overview

The W78E516DLG is an 8-bit microcontroller from the Nuvoton W78 series, featuring a 40MHz operating speed and 64KB of Flash program memory. It utilizes a surface-mount 44-BQFP package and supports a supply voltage range of 2.4V to 5.5V. The device includes 36 I/O pins, 512 bytes of RAM, and operates within a temperature range of -40°C to 85°C.

Microcontrollers Feature Summary

• High-speed 8052 core architecture with configurable clock speeds
• Integrated In-System Programming (ISP) capability for firmware updates
• Robust peripheral set including UART and watchdog timer

Microcontrollers Applications

• Security and alarm systems
• Bar code readers
• KVM switches

Microcontrollers Procurement Notes

Verify component status as the W78E516D series has been marked as obsolete in public records. Confirm availability through authorized distributors or secondary markets. Ensure the specific DLG suffix matches the required 44-LQFP package variant if applicable, as datasheets may reference multiple package options for the base model.

Microcontrollers Selection Notes

Select this component for applications requiring pin compatibility with traditional 12T 8051 controllers while needing higher performance. It is suitable for designs requiring ISP functionality and industrial temperature ranges. Verify that the 44-pin package fits the PCB layout constraints compared to other variants like PLCC or DIP.

Microcontrollers Part Context

This part belongs to the Nuvoton W78 family, which extends the classic 8051 architecture with enhanced features. The series is designed for cost-sensitive embedded applications, offering a balance of processing power and peripheral integration. It serves as a drop-in replacement for legacy 8051 designs in many industrial contexts.

Microcontrollers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.