W78E054DLG - 40MHz 8052 8-Bit 16KB MCU | Nuvoton | LQFP-48
N.º da peça: W78E054DLG ✓ AtivoW78E054DLG Visão geral
An 8-bit microcontroller is a microprocessor core designed primarily for embedded control rather than desktop computing. The W78E054D/W78E052D family extends the 8052 architecture to higher operating frequencies and provides integrated program memory for standalone applications. At up to 40 MHz, the device is suitable for systems requiring fast deterministic I/O handling while remaining manageable in an 8-bit software ecosystem. Its 48-LQFP package exposes substantially more I/O than smaller packages while remaining compatible with automated PCB assembly.
The verified features emphasize a 16 KB flash program-memory capacity, 40 MHz maximum clock operation, and a broad 2.4 V to 5.5 V supply range. The 2.4 V minimum operating voltage supports low-voltage designs, while the upper limit allows operation from conventional 5 V systems. The stated -40 °C to 70 °C commercial temperature range supports industrial equipment, instrumentation, appliances, access controls, and compact controller modules that do not require the wider temperature limits associated with extended-temperature components.
As an 8052-compatible device, the W78E054DLG can execute standard 8051-family instructions while benefiting from the faster clock and denser flash implementation in this family. The verified data identifies the device as a 16K × 8 flash MCU, providing 16,384 bytes of program storage. Detailed RAM organization, interrupt-vector arrangement, peripheral configuration, oscillator requirements, and electrical timing values are not included in the supplied excerpts and should be confirmed against the manufacturer datasheet before schematic or firmware release.
Typical application areas include small industrial controllers, sensor-conditioning and data-acquisition modules, motor and relay control, security and access-control equipment, and consumer appliances. Its 48-LQFP footprint is particularly useful when a design needs more external connections than a small-outline microcontroller can provide. In each case, firmware must account for the device's 8-bit architecture and peripheral assignment shown in the authoritative pinout and reference manual.
A critical design step is to verify every power, clock, reset, and I/O connection against the official W78E054D/W78E052D datasheet before PCB layout. The supplied search excerpts do not expose the complete pin names, exposed-pad arrangement, decoupling requirements, or recommended external components. Engineers should also confirm the oscillator source, programming interface, reset strategy, unused-pin treatment, and operating voltage tolerance for the assembled production configuration.
This product record consolidates verified distributor pricing, package information, operating limits, and sourcing links into one engineering reference. It also separates confirmed parameters from missing datasheet details, helping designers avoid assumptions about pin compatibility, replacement parts, memory availability, or peripheral behavior while preserving traceability to current market data.
Alternativas drop-in para W78E054DLG — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Nenhuma alternativa drop-in disponível para este produto.
Solicitar alternativasW78E054DLG Classificações máximas e características elétricas
| Microcontroller Type | 8-bit 8052-compatible microcontroller |
| Frequência máxima de clock | 40 MHz |
| Flash Memory Size | 16 KB |
| Flash Memory Organization | 16K x 8 bits |
| Operating Voltage Range | 2.4 V to 5.5 V |
| Nominal Supply Voltage | 5 V |
| Faixa de temperatura de operação | -40 °C to 70 °C |
| Encapsulamento | 48-pin LQFP |
| Tipo de montagem | Surface mount |
| Core / Instruction Set | 8052 / 8051-family compatible |
| Program Memory Type | Flash |
| Lead-Free Status | Pb-free |
Guia de Configuração de Pinos do W78E054DLG 48-pin lqfp
Configuração de pinos para W78E054DLG (pacote 48-pin lqfp). 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 W78E054DLG.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
W78E054DLG é adequado para 6 aplicaçãos: Small Industrial Controller, Instrumentation and Data Acquisition, Security and Access-Control Equipment, Motor, Relay, and Actuator Control, Consumer Appliance Controller, External I/O and Communication Module.
Small Industrial Controller
The W78E054DLG fits compact industrial-control modules that require deterministic 8-bit processing, 16 KB of onboard flash, and a generous 48-pin LQFP interface. Its verified 40 MHz maximum clock provides ample execution headroom for sequencing discrete sensors, debouncing inputs, controlling relays, and updating a local display. Operation across 2.4 V to 5.5 V also permits deployment from both 3.3 V and 5 V system rails. The engineer must confirm timer, watchdog, communication, and interrupt resources in the manufacturer datasheet and then validate firmware timing under worst-case input and output loading.
Instrumentation and Data Acquisition
For compact instrumentation, the W78E054DLG can combine control logic with external sensing and conversion hardware while retaining 16 KB of integrated flash. Its 8052-compatible 8-bit architecture supports established embedded-control code, and the 40 MHz clock leaves processing margin for sampling control, status formatting, and data transfer. The 48-LQFP package provides more external pins than a small-outline MCU and can simplify routing among digital inputs, display signals, and communications. ADC accuracy, sensor interface timing, and serial protocols are not confirmed in the supplied excerpts and require datasheet-level validation.
Security and Access-Control Equipment
The W78E054DLG is applicable to access-control readers, keypad interfaces, door-lock controllers, and alarm panels where local decision logic and nonvolatile program storage are needed on a compact board. Its verified 16 KB flash is suitable for modest control firmware, while the 40 MHz 8-bit processor can service inputs and update indicators quickly. The -40 °C to 70 °C range is appropriate for many indoor commercial environments. Before selection, engineers should verify cryptographic requirements, watchdog behavior, communication security, brownout handling, and all peripheral availability because these details are absent from the verified excerpts.
Motor, Relay, and Actuator Control
The W78E054DLG can serve as the sequencing controller for relays, solenoids, stepper systems, or small motor-control modules. Its 40 MHz maximum operating frequency supports responsive task scheduling, while the 48-pin LQFP package exposes enough pins for control inputs, status LEDs, and external interface signals. The 2.4 V to 5.5 V operating range supports common embedded supply architectures. Actual timer channels, PWM outputs, ADC inputs, and electrical limits must be confirmed before assigning functions; output drivers, flyback protection, current limiting, and thermal margins remain separate board-level requirements.
Consumer Appliance Controller
The W78E054DLG is a reasonable fit for appliance subcontrollers, timers, user-interface modules, and small motor or heater management boards. Its 8052-compatible architecture allows use of familiar 8-bit compiler and driver ecosystems, while 16 KB of flash provides a defined program-memory budget for control logic. The 48-pin LQFP package facilitates access to buttons, displays, and external switches, and the verified -40 °C to 70 °C range suits many indoor products. Firmware and hardware teams should confirm start-up behavior, supply sequencing, flash endurance, peripheral mix, and safety shutdown requirements before product qualification.
External I/O and Communication Module
The W78E054DLG can form the basis of a compact digital I/O, monitoring, or communications module where one board must coordinate many external signals. Its 48-pin LQFP package supports a higher pin count than small-outline MCUs, while the 40 MHz 8-bit core can handle protocol formatting, status aggregation, and local control. The verified 2.4 V to 5.5 V supply range allows integration with either 3.3 V or 5 V peripherals, subject to individual I/O-level verification. UART, SPI, I2C, timer, and interrupt availability must be confirmed from the full datasheet, along with isolation or protection requirements for externally accessible wiring.
Dados de referência de engenharia para W78E054DLG — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto |
|---|---|
| Brand | Nuvoton Technology Corporation |
| Package | 48-pin LQFP |
| Microcontroller Type | 8-bit 8052-compatible microcontroller |
| Maximum Clock Frequency | 40 MHz |
| Flash Memory | 16 KB (16K x 8 bits) |
| Operating Voltage Range | 2.4 V to 5.5 V |
| Operating Temperature Range | -40 °C to 70 °C |
| Lead-Free Status | Pb-free |
Principais diferenciais
- Defined 16 KB flash configuration (vs Unverified W78E052D-series members)
- 40 MHz maximum operating frequency (vs Unverified W78E058DDG comparison candidate)
- Wide verified low-voltage operating range (vs Unverified cross-brand 8-bit MCUs)
- 48-pin LQFP interface capacity (vs W78E054DPG)
Notas de projeto
Do not release the PCB or production firmware without checking the authoritative W78E054D/W78E052D datasheet. The supplied excerpts confirm the 48-pin LQFP package but do not provide individual pin assignments. Verify supply pins, ground pins, reset, oscillator connections, programming signals, all I/O directions, and any exposed-pad or thermal requirements. Also confirm whether the selected board revision and firmware depend on suffix-specific behavior; W78E054DLG must not be substituted solely because another member carries a similar W78E family code.
Design the power rail for the verified 2.4 V to 5.5 V operating range rather than assuming that every 5 V circuit condition is acceptable. Confirm actual supply-current limits, DC and AC input thresholds, and output-level behavior in the manufacturer datasheet. Add the manufacturer-recommended bypass capacitors directly at the supply and ground pins, and account for startup current when sizing the upstream regulator. Because detailed current and capacitor recommendations were not present in the supplied data, those values must be obtained before schematic release.
The 48-pin LQFP footprint requires a land pattern that matches the manufacturer's recommended pad geometry and solder mask pattern. Place decoupling components close to the relevant supply pins and maintain short ground returns to reduce supply transference. Position the clock circuitry according to the confirmed oscillator configuration, and provide clean access to the programming interface for production programming and field updates. The verified excerpts do not expose a recommended PCB footprint, so use the package drawing rather than scaling a generic 48-pin LQFN or LQFP footprint.
Informações de conformidade
The verified Mouser listing identifies the W78E054DLG as Pb-free. No explicit RoHS, REACH, AEC-Q100, halogen-free, or conflict-minerals statement was supplied, so those qualifications remain unknown.