W78E051DDG - 8-Bit 40MHz 4KB Flash MCU | Nuvoton
N.º da peça: W78E051DDG ✓ AtivoW78E051DDG Visão geral
An 8-bit microcontroller is a compact embedded-control device integrating a CPU, program memory, data memory, and peripherals on one semiconductor package. Within the product hierarchy, W78E051DDG belongs to the embedded microcontroller class and is positioned for cost-sensitive control systems that require an 8-bit processing engine, Flash memory, and a conventional through-hole package. The 8052-compatible architecture also supports established embedded software and instruction-set familiarity.
The primary features available from the verified data are 4KB of Flash program memory, operation up to 40MHz, a 2.4V to 5.5V supply range, and Pb-free construction. These attributes make the device applicable to industrial controllers, embedded automation equipment, motor-control systems, metering equipment, and connected low-power board designs. Its 40-DIP format also supports prototype construction and through-hole assembly.
Technically, the W78E051DDG combines an 8-bit processor core with on-chip Flash rather than relying solely on an external program-memory device. A 40MHz operating rate provides additional timing headroom for peripheral servicing and control-loop execution, while the 2.4V minimum supply voltage supports integration into systems designed around low-voltage logic. Detailed RAM, timer, UART, GPIO, oscillator, and electrical-current information is not present in the supplied source data and should be confirmed in the manufacturer datasheet.
Typical applications include simple motor controllers, industrial sequence-control boards, appliance-control modules, instrumentation interfaces, metering equipment, and compact embedded automation nodes. The through-hole 40-DIP package is particularly useful where production volumes are modest, prototype interchangeability is important, or automated through-hole assembly is already available. Firmware developers should use the manufacturer’s register definitions, memory map, and peripheral documentation when creating new designs.
Design planning should begin with confirming the exact pinout, oscillator requirements, reset behavior, available peripheral functions, and memory map from the W78E051 family documentation. The 2.4V to 5.5V operating range does not establish the permissible voltage on every I/O pin, so signal-level compatibility must be verified separately. Decoupling and grounding should follow the datasheet reference layout rather than relying only on general 8052 conventions.
This page consolidates verified distributor specifications, procurement links, application guidance, and explicit data gaps for the W78E051DDG. It distinguishes confirmed 8-bit, 40MHz, 4KB Flash, voltage, temperature, and package attributes from unreported specifications, helping engineers make an evidence-based procurement and design decision without filling unknown values with assumptions.
Alternativas drop-in para W78E051DDG — 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 alternativasW78E051DDG Classificações máximas e características elétricas
| Product Type | 8-bit embedded microcontroller |
| Architecture | 8052-compatible W78 architecture |
| Frequência máxima de clock | 40MHz |
| Program Memory | 4KB Flash (4K x 8 bits) |
| Operating Voltage Range | 2.4V to 5.5V |
| Faixa de temperatura de operação | -40°C to +70°C |
| Encapsulamento | 40-pin DIP |
| Tipo de montagem | Through-hole |
| Lead-Free Status | Pb-free |
Guia de Configuração de Pinos do W78E051DDG 40-pin dip
Configuração de pinos para W78E051DDG (pacote 40-pin dip). 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 W78E051DDG.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
W78E051DDG é adequado para 6 aplicaçãos: Industrial Sequence Control, Embedded Automation Controller, Small Motor-Control Interface, Metering and Measurement Module, Appliance Control Board, Low-Power Embedded Board.
Industrial Sequence Control
The W78E051DDG fits compact sequence-control equipment that requires an 8-bit processor, 4KB Flash program memory, and operation from 2.4V to 5.5V. Its confirmed 40MHz maximum clock provides timing headroom for coordinating discrete inputs, outputs, and state-machine logic in equipment such as relay controllers, process sequencers, and small industrial interfaces. The 40-DIP package simplifies prototype insertion and through-hole inspection. Before finalizing the board, verify the complete 40-pin mapping, available I/O count, timer channels, and electrical limits from the manufacturer datasheet.
Embedded Automation Controller
The W78E051DDG can serve as the local controller in a low-cost embedded-automation module because it combines an 8052-compatible 8-bit architecture with 4KB of Flash and a 2.4V to 5.5V operating range. These confirmed characteristics support firmware-based state machines, supervisory logic, and peripheral coordination without requiring a higher-complexity processor. The 40-DIP footprint is useful for hand-built automation prototypes and legacy-style controller boards. Firmware should be structured around the verified memory map and the exact peripheral set in the datasheet.
Small Motor-Control Interface
The W78E051DDG is suitable for supervisory motor-control logic where a dedicated 8-bit MCU handles command decoding, interlocks, status reporting, and sensor polling. Its confirmed 40MHz maximum clock offers additional instruction throughput compared with slower 8-bit devices, while the 4KB Flash capacity is sufficient for compact control routines. The MCU should operate beside rather than directly replace a power-stage device. External drivers, isolation, protection, and timing checks must be added according to the motor voltage, current, and grounding requirements.
Metering and Measurement Module
The W78E051DDG can be used in a metering module for local display control, configuration storage, and communication framing where an 8052-compatible 8-bit design is preferred. Its 4KB Flash supports a compact firmware image, and the 2.4V minimum operating voltage permits integration with low-voltage sensor and interface circuitry. The verified -40°C to +70°C range also supports many indoor industrial environments. Measurement accuracy still depends on the selected sensor, analog front end, reference, calibration method, and grounding, none of which are specified in the supplied data.
Appliance Control Board
The W78E051DDG is appropriate for appliance and equipment-control boards built around established 8-bit firmware patterns. Its 4KB Flash provides space for boot logic, operating states, and lookup tables, while the 40MHz maximum clock supports responsive control-loop and communication tasks. The 40-DIP package is especially convenient for low-volume production, educational builds, and repairable through-hole assemblies. The designer must confirm reset, oscillator, watchdog, timer, UART, and I/O availability in the datasheet because those details were not included in the verified listing.
Low-Power Embedded Board
The W78E051DDG can support low-power embedded-board functions that benefit from a compact 8-bit control engine and a 2.4V to 5.5V supply range. The available 4KB Flash accommodates a focused program, and the 40MHz maximum clock provides flexible timing options for sensor polling and local control. It is also compatible with the verified -40°C to +70°C industrial temperature range. Actual standby, sleep, and active-current performance is not present in the supplied source data and must be measured or obtained from the datasheet before making battery-life claims.
Dados de referência de engenharia para W78E051DDG — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto |
|---|---|
| Package | 40-pin DIP |
| Brand | Nuvoton Technology Corporation |
| Architecture | 8052-compatible W78 8-bit |
| Maximum Clock Frequency | 40MHz |
| Program Memory | 4KB Flash |
| Operating Voltage Range | 2.4V to 5.5V |
| Operating Temperature Range | -40°C to +70°C |
| Lead-Free Status | Pb-free |
Principais diferenciais
- Confirmed 40MHz maximum operating frequency (vs ATMEGA328P-MUR)
- Verified 4KB Flash program memory (vs ATMEGA328P-MUR)
- Low-voltage 2.4V to 5.5V operating range (vs ATMEGA328P-MUR)
Notas de projeto
Design the board around the verified 40-DIP footprint and the manufacturer package drawing rather than a generic 40-pin symbol. Confirm every pin name and function against the W78E051 datasheet, then reserve the required power, ground, reset, clock, and programming connections. Incorrectly assigning a pin from another W78E051 package can prevent programming or cause an unintended output state.
The confirmed operating range is 2.4V to 5.5V, but that does not define the safe voltage applied to every I/O or the required power-sequencing procedure. Verify input thresholds, output drive, injection limits, and power-on states from the datasheet. Place the manufacturer-recommended supply bypass capacitors close to the supply pins and provide a clean return path for digital switching current.
Do not substitute a similarly named W78E051 device solely because its suffix looks related. Package suffix changes can alter pin count, pinout, exposed functions, and PCB compatibility. Compare the physical drawing, memory capacity, I/O assignment, peripheral configuration, and electrical limits for every proposed alternative. No verified drop-in replacement was present in the supplied cross-reference results.
Informações de conformidade
The verified Mouser listing explicitly describes W78E051DDG as Pb-free. No explicit RoHS, REACH, halogen-free, conflict-minerals, or automotive-qualification statements were supplied. AEC-Q100 is not applicable to the base commercial MPN unless the manufacturer provides a separately qualified ordering code.