W78E516DPG - 8-Bit 40MHz 64KB Flash MCU | Nuvoton
Teilenummer: W78E516DPG ✓ AktivW78E516DPG Übersicht
An 8-bit microcontroller is a compact embedded-control device that combines a processor core, program memory, data memory, I/O ports, timers, and communication peripherals on one integrated circuit. The W78E516D/W78E058D family belongs to the broader 8051 microcontroller hierarchy, retaining compatibility with the standard 8052 instruction set while adding Flash EPROM and auxiliary Flash capabilities for firmware-intensive embedded products.
The W78E516DPG provides 64KB of main Flash EPROM, 4KB of auxiliary Flash EPROM, and 512 bytes of RAM. Its 40MHz maximum operating frequency supports faster control-loop and serial-communication tasks than conventional 12MHz 8051-class devices. The package exposes 36 I/O lines, allowing connection to sensors, relays, displays, keypads, data converters, and other embedded-system peripherals. The supplied distributor records identify the device as Pb-free and specify an operating range of -40°C to 70°C for this orderable MPN.
The W78E516D architecture is designed around an 8-bit CISC instruction set and expanded 8052-compatible software execution. On-chip Flash removes the need for an external program-memory device during normal embedded operation, while in-system programming allows firmware to be updated without removing the microcontroller from its assembled circuit. Auxiliary Flash can retain firmware or data outside the main 64KB program area, which is useful when application code must share the same package with a separate update or configuration region.
Typical uses include industrial controllers, data-acquisition equipment, appliance controllers, motor-control systems, communication modules, and legacy 8051 products being migrated to a faster, Flash-based implementation. The combination of 40MHz operation, 36 I/O lines, and 64KB of program memory makes the device suitable for control systems requiring moderate computational throughput and several peripheral interfaces. System-level timing and peripheral availability should still be checked against the manufacturer datasheet before production release.
PCB planning should reserve the complete 44-pin PLCC footprint and confirm the exact pin names, oscillator requirements, reset behavior, programming interface, and decoupling connections from the manufacturer documentation. Because PLCC44 is not represented by a dedicated package-diagram key in the available library, the package view uses the generic fallback rather than presenting an unverifiable pin drawing.
This product page consolidates the verified distributor specifications, official Nuvoton family information, package constraints, sourcing facts, and replacement limitations for W78E516DPG. It distinguishes exact MPN evidence from family-level information and avoids presenting unverified pricing, detailed pin assignments, or unsupported substitute parts as confirmed facts.
Drop-in-Alternativen für W78E516DPG – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit W78E516DPG (gleiche Bauform und Footprint) – abweichend in Mounting Type, Package, RAM Size, Supply Voltage Range.
W78E516DDG
✅ Drop-InPreis auf Anfrage
Datenblatt ansehen →W78E516DPG
✅ Drop-InPreis auf Anfrage
Datenblatt ansehen →W78E516DPG Grenzwerte & elektrische Eigenschaften
| Product Type | 8-bit CISC microcontroller |
| Core Compatibility | 8052 instruction-set compatible |
| Maximum CPU Frequency | 40MHz |
| Program Memory | 64KB Flash EPROM |
| Program Memory Organization | 64K x 8 bits |
| Auxiliary Flash EPROM | 4KB |
| RAM Size | 512 x 8 bits |
| Number of I/O Lines | 36 lines |
| Supply Voltage Range | 2.4V to 5.5V |
| Betriebstemperaturbereich | -40°C to 70°C |
| Gehäuse | 44-pin PLCC |
| Montageart | Surface mount |
| Programming Method | In-system programming |
| Processor Architecture | 8-bit CISC |
| Lead-Free Status | Pb-free |
W78E516DPG 44-pin plcc Pinbelegungsleitfaden
Pinbelegung für W78E516DPG (44-pin plcc-Gehäuse). Dieser digitale IC umfasst GPIO, Kommunikationsschnittstellen (UART, SPI, I2C) und Versorgungspins. Alternative Pin-Funktionen und Konfigurationsoptionen entnehmen Sie dem Herstellerdatenblatt. Unverzichtbar für Embedded-System-Design und PCB-Layout.
Keine detaillierten Pinbelegungsdaten verfügbar für W78E516DPG.
Siehe die Datenblatt für die vollständige Pin-Konfiguration.
Typische Anwendungen
W78E516DPG ist geeignet für 6 Anwendungs: Industrial Equipment Controller, Legacy 8051 System Upgrade, Data-Acquisition and Control Module, Appliance and Embedded Control, Communication Interface Module, Programmable Logic and Sequential Controller.
Industrial Equipment Controller
The W78E516DPG suits industrial equipment controllers that need an 8052-compatible instruction set, 40MHz processing, 36 I/O lines, and 64KB of main Flash. It can manage digital inputs, relay outputs, status indicators, and communication peripherals while retaining familiar 8051 software conventions. In-system programming permits firmware updates without removing the device from the assembled controller, while 4KB of auxiliary Flash can hold separate configuration or update data. The 2.4V-to-5.5V operating range supports embedded systems designed around regulated 3.3V or 5V rails, although the final power architecture and peripheral connections must be verified against the manufacturer datasheet.
Empfohlen
Legacy 8051 System Upgrade
The W78E516DPG provides a practical upgrade path for an existing 8052-based product when the controller footprint must remain a 44-pin PLCC. Its 8052-compatible instruction set supports reuse of established application code, while 64KB of Flash, 40MHz operation, and in-system programming provide greater firmware capacity and easier field updates than a conventional parallel-ROM implementation. The 36 available I/O lines can preserve connections to keypads, displays, sensors, and actuator drivers. Because legacy designs may depend on particular interrupt vectors, memory locations, port behavior, oscillator settings, or timer modes, designers should compare the complete timing and peripheral configuration rather than assuming instruction-set compatibility alone guarantees interchangeability.
Empfohlen
Data-Acquisition and Control Module
The W78E516DPG can serve as the local controller in a compact data-acquisition module that combines sensor inputs, status reporting, and configuration storage. Its 36 I/O lines provide useful host-controller connectivity for digital channels and external interface circuits, while the 64KB main Flash supports acquisition routines, communication protocols, and calibration logic. The 512-byte RAM is modest, so buffering and time-critical processing may require an external memory or a carefully partitioned firmware design. The 40MHz maximum clock provides additional processing headroom, but actual response time still depends on the selected oscillator, peripheral clocking, and interrupt configuration. In-system programming also allows field recalibration and firmware maintenance.
Empfohlen
Appliance and Embedded Control
The W78E516DPG is appropriate for appliance controllers, interface modules, and other compact embedded products combining several discrete controls with moderate firmware complexity. Its 64KB of Flash provides room for state machines, diagnostics, and protocol handling, while the 36 I/O lines can connect switches, displays, indicators, and external control components. The 2.4V-to-5.5V range accommodates both lower-voltage and 5V designs, subject to individual peripheral requirements. In-system programming simplifies manufacturing configuration and post-deployment updates, while auxiliary Flash provides an additional 4KB for configuration or update information. Firmware should include brownout and reset handling appropriate to the power supply, and the final clock and peripheral settings must be verified from the manufacturer documentation.
Empfohlen
Communication Interface Module
The W78E516DPG can act as the protocol-processing MCU in a communication interface or protocol-conversion module. Its 8052-compatible software platform supports established serial-control stacks, and the 40MHz operating capability provides additional timing margin for interrupt-driven communication tasks. The 36 I/O lines are useful for status signals, configuration straps, and auxiliary interfaces, while in-system programming supports deployment-specific firmware or protocol updates. The 64KB main Flash and 4KB auxiliary Flash can separate active application code from configuration or update data. Actual UART, timer, interrupt, and external-interface capabilities must be confirmed for the exact W78E516DPG configuration, and the 512-byte RAM should be included in the communication stack's worst-case buffer analysis.
Empfohlen
Programmable Logic and Sequential Controller
The W78E516DPG can implement a programmable logic or sequential-control front end where 36 I/O lines, 40MHz processing, and Flash-based firmware are useful. Timers, interrupt handling, and application logic can coordinate sensors, indicators, relays, and step-driven processes without requiring a separate processor architecture. The 2.4V-to-5.5V supply range allows integration with appropriately designed logic levels, and the 8052-compatible instruction set supports established control-code patterns. In-system programming simplifies field changes to timing tables and sequencing rules. Engineers should reserve oscillator and reset support components on the PCB, validate all I/O levels, and confirm timer and interrupt resources for the selected clock configuration before compiling the final application firmware.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für W78E516DPG – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | W78E516D | W78E516DPG |
|---|---|---|---|
| Brand | Nuvoton Technology Corporation | Nuvoton Technology Corporation | Winbond |
| Package | 44-pin PLCC | PLCC44 option | 44-pin PLCC |
| Processor Architecture | 8-bit CISC | 6T/12T 8051 MCU | 8-bit 8051-family MCU |
Wichtigste Unterscheidungsmerkmale
- Higher Flash-based program capacity than conventional parallel-ROM 8051 designs (vs. W78E516D)
- Directly identified 40MHz 8-bit controller configuration (vs. W78E516D)
- In-system firmware updating without PCB removal (vs. W78E516D)
Designhinweise
Design the PCB around the complete 44-pin PLCC footprint and verify every signal against the manufacturer pinout before fabrication. The supplied records confirm the PLCC-44 package but do not expose the individual pin assignments, so do not infer pad numbers from the family description. Confirm the required VDD, VSS, reset, oscillator, programming, and I/O connections directly from the W78E516D datasheet, and review PLCC soldering and cleaning requirements in the assembly process.
The supported supply range is 2.4V to 5.5V, but that range does not establish the usable operating combinations for every clock and peripheral setting. Confirm the selected clock source and configuration against the manufacturer timing information, place local supply decoupling close to the device, and ensure reset behavior remains deterministic across power-up. If the board uses a 3.3V rail, validate the levels of every attached peripheral rather than assuming every I/O pin supports 5V tolerance.
Do not assume that the same MPN name proves that devices from different manufacturers have identical timing, interrupt vectors, peripheral registers, memory maps, or electrical characteristics. The Winbond-branded W78E516DPG listing is only a candidate replacement based on the available search evidence. Before substitution, compare oscillator requirements, reset timing, Flash programming voltages, port behavior, timers, serial interfaces, and all 44 package connections, then run boundary tests across the intended voltage and temperature range.
Compliance-Informationen
The Mouser product record identifies W78E516DPG as Pb-free. RoHS, REACH, halogen-free, and conflict-minerals statements were not present in the supplied verified data. AEC-Q100 qualification information was not provided for this exact MPN.
