W78I054DPG - 8-Bit 40MHz 16KB Flash Microcontroller | Nuvoton
N.º da peça: W78I054DPG ✗ Fim de vidaW78I054DPG Visão geral
The W78 family belongs to the broader embedded-controller hierarchy: 8-bit microcontroller, microprocessor, semiconductor, and integrated circuit. Its 8052-compatible instruction set supports the familiar combination of internal Flash program memory, I/O ports, timers, serial communication, interrupt control, and clocked peripherals. This architecture is valuable when an existing firmware toolchain or application was developed for the W78/8052 ecosystem and does not require the processing capability of a 32-bit MCU.
Verified distributor listings identify the device as an 8-bit microcontroller with 16KB of Flash memory and a maximum clock frequency of 40MHz. The Mouser listing additionally reports a 2.4V to 5.5V operating voltage range, Pb-free status, and an operating temperature range of -40°C to 85°C. These characteristics support designs using standard 5V logic systems as well as applications operating from compatible low-voltage rails, subject to the complete manufacturer datasheet for timing, electrical limits, and peripheral details.
The PG package suffix denotes the 44-pin PLCC configuration in the verified distributor descriptions. PLCC packaging provides a leaded, socket-compatible format that is useful where a production socket is preferred, rework is less frequent, or the device is assembled into leaded through-hole industrial hardware. The package is not interchangeable with a fine-pitch QFP or a leadless package without a PCB footprint change.
Typical uses include industrial machinery, motor and appliance control, instrumentation, keyboard or panel interfaces, LED signage, and small standalone embedded systems. For a new design, confirm the exact peripheral configuration, interrupt vector behavior, oscillator options, I/O limits, timing characteristics, and electrical operating limits from the manufacturer documentation before releasing production firmware.
This product record combines verified distributor specifications, package information, sourcing context, and practical selection guidance. Where the supplied sources do not expose detailed pin assignments, memory maps, pricing, or lifecycle declarations, those fields are identified as data needed rather than inferred. The result is intended as an engineering-oriented procurement and design reference rather than a substitute for the complete manufacturer datasheet.
Alternativas drop-in para W78I054DPG — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
W78E054DPG
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Ver ficha técnica →W78I054DPG Classificações máximas e características elétricas
| Product Type | 8-bit 8052 W78 Flash Microcontroller |
| Maximum Operating Frequency | 40 MHz |
| Program Memory | 16KB (16K x 8) Flash |
| Architecture | 8052-compatible 8-bit MCU |
| Operating Voltage Range | 2.4V to 5.5V |
| Faixa de temperatura de operação | -40°C to 85°C |
| Encapsulamento | 44-pin PLCC |
| Tipo de montagem | Through-hole, leaded |
| Manufacturer | Nuvoton Technology Corporation |
| Microcontroller Family | W78 series |
| Lead-Free Status | Pb-free |
| Flash Memory Organization | 16K x 8 |
| Instruction Set | 8052-compatible |
| Device Category | Microcontroller IC |
| Manufacturer Product Description | IC MCU 8BIT 16KB FLASH 44PLCC |
| Distributor Availability Listing | Listed by DigiKey, Mouser, Octopart, YIC Electronics, and Microchip USA |
Guia de Configuração de Pinos do W78I054DPG 44-pin plcc
Configuração de pinos para W78I054DPG (pacote 44-pin plcc). Este CI digital inclui GPIO, interfaces de comunicação (UART, SPI, I2C) e pinos de alimentação. Consulte o datasheet do fabricante para funções alternativas dos pinos e opções de configuração. Essencial para projeto de sistemas embarcados e layout de PCB.
Nenhum dado detalhado de pinagem disponível para W78I054DPG.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
W78I054DPG é adequado para 6 aplicaçãos: Industrial Machine Control, Appliance and Equipment Controller, Data Acquisition Front End, LED Signage and Display Sequencer, Legacy Communication Interface, Educational and Legacy System Maintenance.
Industrial Machine Control
The W78I054DPG fits legacy industrial controllers that depend on an 8052-compatible firmware environment and a 40MHz 8-bit core. Its 16KB Flash provides compact program storage for sequencers, interlocks, status logic, and operator-interface routines, while the 2.4V to 5.5V operating range supports conventional embedded supply levels. The 44-pin PLCC package is useful for socketed or leaded industrial assemblies where field replacement and long product lives matter. Before redesigning an existing machine, verify oscillator requirements, I/O levels, interrupt priorities, peripheral availability, and timing against the manufacturer datasheet. The supplied records do not expose a formal industrial qualification claim, so environment-specific EMC, temperature, and reliability testing remains necessary.
Recomendado
Appliance and Equipment Controller
The W78I054DPG is appropriate for appliance controllers, timers, sequencers, and compact equipment modules where an established 8-bit control platform is preferable to introducing a new 32-bit architecture. Its 40MHz operating capability supports faster state-machine execution and peripheral servicing than a low-clock 8-bit MCU, while 16KB of Flash holds control code, lookup tables, and diagnostic routines. The -40°C to 85°C range listed by Mouser covers many indoor industrial and commercial environments. Designers should allocate Flash carefully if the firmware includes display tables, logging, or communication protocols, and should confirm that the chosen crystal or external clock configuration meets the device's timing requirements before layout release.
Recomendado
Data Acquisition Front End
The W78I054DPG can manage a small acquisition subsystem that combines sensor conditioning, digital status inputs, local filtering, and a serial reporting function. Its 40MHz 8-bit processor provides enough execution rate for deterministic polling and control loops, and 16KB Flash can hold the acquisition state machine and communication routines. The 2.4V to 5.5V range allows the controller to operate from a compatible sensor-board rail, although analog front-end accuracy is determined by external components. Engineers should budget communication bandwidth and interrupt latency before selecting this MCU, verify whether the required UART or timer resources are available, and isolate noisy analog and switching sections to prevent the 8-bit control MCU from becoming a measurement bottleneck.
Recomendado
LED Signage and Display Sequencer
The W78I054DPG is well suited to LED matrix sequencing, menu indicators, and compact signage controllers because the 8-bit architecture can execute repetitive timing and animation tasks at up to 40MHz. Sixteen kilobytes of Flash can store display patterns, character tables, brightness sequences, and basic diagnostics. The 44-pin PLCC package provides enough external connections for multiplexed display drive control and status signaling in a leaded assembly. The principal design constraint is not raw logic speed but accurate refresh timing and current distribution. Developers should use timer-based scheduling, account for display blanking and persistence, verify I/O drive capability, and place driver transistors and high-current return paths separately from sensitive control traces.
Recomendado
Legacy Communication Interface
The W78I054DPG can act as the supervisory controller for a legacy communication node because its 8052-compatible core and 40MHz clock provide sufficient control throughput for protocol handling and status management. The device can coordinate an RS-232 interface, discrete inputs, and relay outputs while retaining a compact 16KB firmware footprint. The 44-pin PLCC package is mechanically attractive for older leaded industrial products where a socketed controller can simplify service replacement. Firmware designers should confirm the availability and electrical characteristics of the required serial port, use a level-appropriate transceiver rather than driving RS-232 signals directly, and validate timing margin at 40MHz. Cable routing and grounding remain critical when connecting the controller to external equipment.
Recomendado
Educational and Legacy System Maintenance
The W78I054DPG is useful for maintaining educational, industrial, or discontinued products that were built around the W78/8052-compatible instruction set. A 40MHz 8-bit controller and 16KB Flash allow existing algorithms and control routines to remain understandable, while the 44-pin PLCC format supports repair of leaded through-hole assemblies. This makes the device preferable to a modern MCU when software, tooling, and board-layout continuity are more important than maximum processing power. Maintainers should still archive the exact compiler, linker map, oscillator configuration, and datasheet revision used by the original product. A replacement review must include every peripheral, interrupt vector, port pin, programming method, and electrical timing parameter rather than relying only on the MCU name or package count.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para W78I054DPG — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | W78E054DPG |
|---|---|---|
| Brand | Nuvoton Technology Corporation | Nuvoton Technology Corporation |
| Package | 44-pin PLCC | 44-pin PLCC |
| Product Type | 8-bit 8052 W78 Flash Microcontroller | 8-bit W78 Flash Microcontroller |
| Program Memory | 16KB (16K x 8) Flash | 32KB Flash |
Principais diferenciais
- Lower verified program-memory configuration (vs W78E054DPG)
- Explicit 40MHz operating specification (vs W78E054DPG)
- Verified industrial temperature coverage (vs W78E054DPG)
Notas de projeto
Treat the 44-pin PLCC footprint as a fixed mechanical commitment. Verify every pin against the manufacturer datasheet before schematic release, because the supplied search results establish the package and pin count but do not provide individual signal assignments. If a socket is used, confirm its pin-1 orientation, lead pitch, and plated-hole geometry from the approved package drawing rather than inferring dimensions from a distributor photograph.
The verified operating range is 2.4V to 5.5V, but the complete datasheet is still required to confirm timing, input thresholds, output-drive limits, and peripheral-specific supply conditions. Place local bypass capacitors close to the device power pins, provide a controlled clock and reset network, and keep power-return paths short. Confirm the actual operating voltage and peripheral configuration before finalizing the power tree.
Do not treat a matching PLCC package count as proof of drop-in compatibility. A valid replacement must preserve pin functions, clocking, programming signals, interrupt behavior, memory organization, and electrical timing. The listed W78E054DPG has a verified 32KB Flash description versus 16KB for the target, so engineers must review the detailed device documentation and existing firmware before substitution.
Separate clock and sensitive signal routing from switching nodes and high-current display or relay drivers. Use a compact ground reference, avoid long parallel traces where possible, and provide local return paths for serial-interface transceivers. For legacy industrial boards, inspect insulation, corrosion, connector cleanliness, and socket contact resistance because control problems in older assemblies frequently originate outside the MCU.
Informações de conformidade
Mouser identifies the W78I054DPG as Pb-free. No explicit RoHS, REACH, halogen-free, conflict-minerals, or automotive-qualification statements were present in the supplied verified data.
