W78E058DPG - 8-Bit 40MHz 32KB Flash MCU | Nuvoton | PLCC-44
N.º da peça: W78E058DPG ✗ Fim de vidaW78E058DPG Visão geral
An 8052-compatible MCU is an embedded microcontroller built around the established 8-bit 8051/8052 instruction-set architecture. Within the product hierarchy, the W78E058D belongs to the Nuvoton 8-bit 8051 MCU family and combines a 6T/12T configurable core with Flash program memory. This architecture is appropriate for compact control systems that need deterministic control logic, moderate processing capacity, and broad peripheral integration without the cost or complexity of a higher-bit MCU.
The principal device parameters include an 8-bit architecture, 40 MHz operating speed, 32 KB Flash memory, 512 bytes of RAM, 36 I/O pins, and a 44-pin PLCC package. According to Nuvoton product information, the W78E058D family is configurable and pin-compatible with traditional 12T 8051 devices. Its operating range of 2.4 V to 5.5 V also supports both lower-voltage and legacy 5 V equipment designs.
The W78E058D family combines Flash program memory with an 8052-compatible core and is positioned for embedded controls including security and alarm equipment, barcode readers, KVM equipment, key phones, user interfaces, and industrial control products. The 36 available I/O pins provide substantial peripheral connectivity for sensors, displays, communication interfaces, and discrete control signals while retaining the familiar 8051 software ecosystem.
For new designs, NRND status is the primary selection consideration. An existing product using the W78E058DPG can generally be maintained when its electrical, memory, timing, and software requirements remain unchanged, but designers should evaluate an active Nuvoton MCU or another currently supported platform when beginning a new production program. A firmware migration is not necessarily required for an identical device, although peripheral changes, memory layout, timing, and package differences require careful review.
When laying out a 44-pin PLCC design, preserve the component's specified pin arrangement and provide suitable bypass capacitance and signal-integrity routing for external clock, reset, and I/O signals. Socketed PLCC assemblies may be convenient for prototypes or service programs, whereas exposed-pad leaded PLCC packages generally require inspection for solder-joint reliability after rework. The manufacturer's datasheet remains the controlling reference for pin names, electrical limits, and programming details.
This product page consolidates verified manufacturer and distributor information, operating limits, package data, pricing availability status, and a documented drop-in comparison for the verified W78E058B40PL candidate. Unlike a raw distributor listing, it also distinguishes a confirmed pin-compatible replacement from unverified catalog recommendations and identifies where additional engineering validation is still required.
Alternativas drop-in para W78E058DPG — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com W78E058DPG (mesmo formato e footprint) — diferindo em Core Architecture, Mounting Type, Package.
W78E058B40PL
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
W78E058DPG Classificações máximas e características elétricas
| Microcontroller Type | 8-bit 8052-compatible W78 microcontroller |
| Maximum CPU Frequency | 40 MHz |
| Program Memory Size | 32 KB (32K x 8) Flash |
| RAM Size | 512 x 8 bits (512 bytes) |
| Number of I/O Pins | 36 pins |
| Encapsulamento | 44-pin PLCC |
| Tensão de alimentação de operação | 2.4 V to 5.5 V |
| Temperatura de operação | -40°C to +85°C |
| Core Architecture | 8052-compatible, configurable 6T/12T core |
| Instruction Set Architecture | 8-bit CISC |
| Tipo de montagem | Surface-mount PLCC |
| Lead-Free Status | Pb-free |
| Status do ciclo de vida | Not Recommended for New Designs (NRND) |
Guia de Configuração de Pinos do W78E058DPG 44-pin plcc
Configuração de pinos para W78E058DPG (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 W78E058DPG.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
W78E058DPG é adequado para 6 aplicaçãos: Security and Alarm Control Panels, Barcode Reader Interfaces, KVM and Human-Interface Equipment, Key Telephone and Communication Terminals, Industrial Control and Utility Products, Legacy Embedded Control Modules.
Security and Alarm Control Panels
The W78E058DPG fits security and alarm control equipment that needs an 8-bit 8052-compatible core, 32 KB of Flash program memory, and 36 I/O pins. Its 2.4 V to 5.5 V operating range supports legacy 5 V panels and lower-voltage sensor interfaces, while the PLCC package simplifies socketed service assemblies. The 40 MHz maximum CPU rate provides deterministic control for keypad scanning, zone monitoring, relay sequencing, and status feedback. Because the family is NRND, engineers should qualify a supported successor for new products and preserve an exact-device BOM for maintenance builds.
Recomendado
Barcode Reader Interfaces
The W78E058DPG can manage a barcode-reader interface where a compact embedded controller must decode or transport serial data while supervising switches and indicators. Its 32 KB Flash capacity provides room for protocol and decoding firmware, 36 I/O pins support peripheral selection and status signaling, and the 40 MHz 8052-compatible core supports responsive real-time control. The 2.4 V to 5.5 V range accommodates both legacy and modern interface levels, subject to each attached device's requirements. Firmware and peripheral mappings must be checked against the manufacturer datasheet before using a replacement MCU.
Recomendado
KVM and Human-Interface Equipment
The W78E058DPG is suitable for compact KVM controllers and user-interface modules that translate switch activity, LEDs, and serial commands into device control. Its 36 I/O pins provide substantial connection capacity for panel inputs and indicator outputs, while 32 KB of Flash accommodates control firmware and configuration tables. The 8052-compatible architecture is familiar in embedded KVM products, and the PLCC package supports sockets where field replacement is valuable. For new KVM platforms, evaluate the device's NRND status against currently supported MCUs with validated USB, HID, or communications peripherals.
Recomendado
Key Telephone and Communication Terminals
The W78E058DPG can support key-phone and communication-terminal functions that combine button scanning, display indication, call signaling, and serial communications. Its 8-bit 8052-compatible core handles deterministic peripheral tasks, 36 I/O pins reduce the need for additional logic, and 32 KB Flash supports menu, signaling, and communication routines. The wide 2.4 V to 5.5 V supply range can simplify mixed legacy-voltage designs, although external line-interface circuits still require proper isolation and protection. Verify oscillator, timer, UART, and port-multiplexing details against the exact device data before board release.
Recomendado
Industrial Control and Utility Products
The W78E058DPG is applicable to compact industrial controllers where deterministic 8-bit logic, 36 I/O pins, and 32 KB Flash are sufficient. The -40°C to +85°C specification supports extended-temperature equipment, while the 44-pin PLCC package facilitates socketed legacy products. Typical tasks include discrete actuator sequencing, sensor-condition monitoring, local buttons, and communication between modules. Industrial adoption should include normal ESD, surge, brownout, and EMC design practices, plus review of operating-life expectations because the W78E058D family is marked NRND.
Recomendado
Legacy Embedded Control Modules
The W78E058DPG is primarily useful in legacy embedded-control modules whose firmware and PCB were designed around the W78E058D family. Its 8052-compatible instruction set supports familiarity with established 8051 toolchains, while 40 MHz operation, 32 KB Flash, and 36 I/O pins define the device's performance envelope. For repair and continuation programs, the part can reduce redesign risk when the same package, firmware, clock, and electrical configuration are retained. For new products, choose an active microcontroller with a supported lifecycle and modern peripherals instead of expanding an NRND platform.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para W78E058DPG — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | W78E058B40PL |
|---|---|---|
| Package | 44-pin PLCC | 44-pin PLCC |
| Brand | Nuvoton Technology Corporation | Nuvoton Technology Corporation |
Principais diferenciais
- Flash-backed 8052-compatible control platform (vs W78E058B40PL)
- Wide legacy-compatible operating range (vs W78E058B40PL)
- Established PLCC serviceability (vs W78E058B40PL)
Notas de projeto
Design the supply rail for the verified 2.4 V to 5.5 V operating range and account for 5 V legacy peripherals that may not tolerate lower rails. Place the required bypass capacitors close to the device supply and ground pins using the shortest possible return path. Brownout behavior, 5 V input tolerance, and startup sequencing must be taken from the manufacturer datasheet rather than inferred from the distributor summary.
Preserve the manufacturer's 44-pin PLCC pad geometry, pin-1 orientation, and socket keying; mechanical rotation is not a drop-in change. Keep oscillator, reset, and programming-related traces short and away from noisy switching nodes. Verify that a replacement such as W78E058B40PL uses the same pin functions and alternate-function mapping rather than relying only on the shared PLCC package.
Do not treat a shared package as proof of complete drop-in compatibility. Compare the W78E058DPG and proposed replacement for Flash size, RAM, clock limits, port multiplexing, peripheral register behavior, reset pins, and programming interface. The NRND status also means that incoming-device traceability and approved sourcing should be maintained for production continuity.
Informações de conformidade
The verified Mouser snippet explicitly identifies the device as Pb-free. No explicit RoHS, REACH, halogen-free, conflict-minerals, or AEC-Q100 declaration was supplied, so those values remain unknown. The W78E058D family is identified by Nuvoton as Not Recommended for New Designs.
