W77E058A40PL - 40MHz 8051 MCU, 32KB Flash | Nuvoton
N.º da peça: W77E058A40PL ✗ Fim de vidaW77E058A40PL Visão geral
An 8051 microcontroller is an embedded-computing IC that combines a CPU core, program memory, data memory, I/O ports, and peripherals on one integrated circuit. Within the product hierarchy, the W77E058A is an 8-bit MCU, a 4T 8051 MCU, a member of the MCS-51 instruction-set family, and a member of the broader embedded processor and semiconductor categories. Its 8051 compatibility supports established compiler, debugger, and application-development ecosystems.
Key features include a 40 MHz maximum operating frequency, a four-clock machine-cycle architecture, and 32KB of on-chip Flash organized as 32K by 8 bits. Two UART devices support serial communication, while two DPTR registers provide separate 16-bit pointer contexts. Four 8-bit I/O ports support digital interfaces, and the 4.5 V to 5.5 V operating range aligns the device with conventional 5 V embedded equipment.
The device uses an 8-bit CISC architecture compatible with the MCS-51 instruction set and remains compatible with traditional 12T 8051 interfaces. Its 4T architecture reduces the clock-to-machine-cycle ratio to four clocks, allowing 40 MHz operation without changing the fundamental software timing model. Because the product is identified as NRND, engineers should verify availability and consider the manufacturer's current portfolio before starting a new design.
Typical applications include security and alarm systems, communication equipment, industrial control, power-management controllers, and industrial personal computers. The two UARTs are useful for sensor, transceiver, display, or host serial links, while the four parallel I/O ports can handle digital control signals, status indicators, relay logic, or keypad interfaces.
The principal design consideration is the 5 V supply requirement and the limited 0°C to 70°C temperature range. Decoupling and signal-integrity practices remain important because all peripherals share the same supply and ground system. Engineers should also confirm the PLCC-44 footprint, pin assignments, and board-level clearances against the manufacturer datasheet before layout release.
This page combines the manufacturer's family-level architecture and lifecycle information with distributor specifications and a practical replacement assessment. It also identifies the package, programming interface considerations, application fit, and design checks needed to evaluate the W77E058A40PL in an embedded control platform.
Alternativas drop-in para W77E058A40PL — 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 alternativasW77E058A40PL Classificações máximas e características elétricas
| Microcontroller Type | 8-bit 8051-compatible MCU |
| Architecture | 4T 8051 CISC |
| Frequência máxima de clock | 40 MHz |
| Machine-Cycle Timing | 4 clocks per machine cycle |
| Flash Memory | 32KB (32K x 8 bits) |
| Tensão de alimentação de operação | 4.5 V to 5.5 V |
| Temperatura de operação | 0°C to 70°C |
| UART Count | 2 |
| DPTR Register Count | 2 |
| I/O Port Count | 4 |
| I/O Port Width | 8 bits per port |
| Encapsulamento | 44-pin PLCC |
| Family Package Options | PLCC-44, PQFP-44, and DIP-40 |
| Instruction Set | MCS-51 compatible |
| Legacy Interface Compatibility | Pin-compatible with traditional 12T 8051 |
| Process Technology | 8-bit CMOS |
| Lead-Free Status | Pb-free |
| Status do ciclo de vida | Not Recommended For New Designs (NRND) |
Guia de Configuração de Pinos do W77E058A40PL plcc-44, pqfp-44, and dip-40
Configuração de pinos para W77E058A40PL (pacote plcc-44, pqfp-44, and dip-40). 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 W77E058A40PL.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
W77E058A40PL é adequado para 6 aplicaçãos: Security and Alarm Control, Serial Communication Equipment, Power Management Controller, Industrial Personal Computer Peripherals, Digital Instrument Control, Embedded Data Acquisition Controller.
Security and Alarm Control
The W77E058A40PL fits security and alarm controllers that require deterministic 8051-compatible firmware, serial peripheral connectivity, and discrete digital control. Its 4T architecture operates at up to 40 MHz, while the 32KB Flash provides space for the main application, event logic, and communication routines. Two UARTs can serve keypad, reader, or communications links, and four 8-bit I/O ports can drive status indicators, zones, relays, or panel controls. The 4.5 V to 5.5 V supply fits conventional 5 V security electronics. Because the family is NRND, the temperature rating and future supply should be checked before beginning a new product.
Recomendado
Serial Communication Equipment
The W77E058A40PL is appropriate for communication equipment that needs two independent UART channels and an 8051-compatible execution environment. At up to 40 MHz with four clocks per machine cycle, the MCU can service protocol handling, local configuration, status reporting, and supervisory logic. One UART may connect to a host or service interface while the second handles a local transceiver or sensor link. Its 32KB Flash supports moderate protocol firmware, and the four 8-bit ports provide modem-control, reset, activity, and status signaling. Engineers should allocate external memory or interface only after confirming the device-specific memory map and peripheral resources in the manufacturer datasheet.
Recomendado
Power Management Controller
The W77E058A40PL can serve as a supervisory controller in a 5 V power-management subsystem where its two UARTs provide configuration and telemetry paths while the four I/O ports monitor enable, fault, and status signals. The 40 MHz 4T core allows responsive control-loop and communication-task scheduling, and the 32KB Flash accommodates parameter tables, state machines, and diagnostics. The device does not directly replace a switching converter's analog control loop, so it is best positioned as a supervisory and communications element. Confirm the 0°C to 70°C operating range against enclosure temperatures and use the manufacturer power and decoupling guidance for the board implementation.
Recomendado
Industrial Personal Computer Peripherals
The W77E058A40PL suits legacy 8051-based IPC peripherals that require deterministic control and established software compatibility. Its MCS-51 instruction set allows reuse of existing 8051 application code, while the 4T core supports faster execution than a traditional 12T device. The two UARTs can manage host or equipment links, and the four 8-bit I/O ports can implement keyboard scanning, panel control, indicator logic, or discrete I/O. Its 44-pin PLCC package is appropriate for systems designed around that footprint, but a new board should not assume a socketed legacy controller is ideal for long-term production. NRND status makes migration planning and confirmed supply essential.
Recomendado
Digital Instrument Control
The W77E058A40PL can control legacy digital instruments that combine serial measurement peripherals with front-panel logic. Its two UARTs support instrument commands and data transfer, while four 8-bit ports handle keys, mode controls, indicators, and interlock signals. The 32KB Flash capacity is suitable for moderate embedded firmware, and the 4T architecture's four-clock cycle supports responsive menu and measurement-control routines. The 5 V supply range integrates naturally with many conventional logic and display-interface circuits, although level translation may still be required for lower-voltage peripherals. Confirm timer, interrupt, and memory organization requirements against the exact datasheet before final firmware allocation.
Recomendado
Embedded Data Acquisition Controller
The W77E058A40PL can coordinate a small 5 V data-acquisition subsystem when the system already depends on 8051-compatible control software. The two UARTs support command exchange with measurement modules, while four 8-bit ports can operate enables, resets, and acquisition-status lines. At up to 40 MHz, the controller can manage sampling sequencing, configuration, fault handling, and data packaging, but the actual converter interface depends on the chosen sensor and ADC. The 32KB Flash should be checked against firmware and calibration-table requirements. Keep analog and digital return paths separated on mixed-signal boards and follow the manufacturer's grounding and decoupling guidance.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para W77E058A40PL — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto |
|---|---|
| Manufacturer | Nuvoton Technology Corporation |
| Package | 44-pin PLCC |
| Architecture | 8-bit 4T 8051 CISC |
| Maximum Frequency | 40 MHz |
| Machine-Cycle Timing | 4 clocks per machine cycle |
| Flash Memory | 32KB (32K x 8 bits) |
| Operating Supply Voltage | 4.5 V to 5.5 V |
| Operating Temperature | 0°C to 70°C |
| UART Count | 2 |
| I/O Ports | 4 x 8-bit ports |
| Lifecycle Status | Not Recommended For New Designs (NRND) |
| Instruction Set | MCS-51 compatible |
Principais diferenciais
- Higher clock rate with 8051-compatible software (vs Traditional 12T 8051 devices)
- Integrated communication resources (vs Single-UART legacy 8051 designs)
- Useful embedded Flash capacity (vs AT89C52 cross-reference candidate)
- Defined 5 V industrial-commercial operating range (vs Automotive-qualified MCUs)
Notas de projeto
Design the supply around the specified 4.5 V to 5.5 V operating range and place the decoupling network at the device supply pins using the manufacturer datasheet recommendations. Keep digital load currents and switching-supply return paths away from sensitive signal references. Confirm that the selected regulator has adequate startup, transient, and output-voltage tolerance before routing the 5 V rail.
Use the exact PLCC-44 footprint and verify every net against the manufacturer pin-description table. Check socket and solder-joint geometry, pad dimensions, and component clearance before fabrication. Because PLCC-44, PQFP-44, and DIP-40 are physically different packages, do not substitute a footprint drawing without a complete pin-by-pin and orientation review.
The W77E058A family is NRND, so a drop-in alternative should not be assumed from a matching 8051 description. Review the exact memory map, peripheral allocation, interrupt vectors, timing, and package of every proposed substitute. A candidate with the same Flash size or UART count can still require firmware, board, and software changes.
Assign the two UART signals to quiet board regions and keep their routes away from clocks, relays, inductive power stages, and high-di/dt traces. Provide a common, low-impedance ground reference between the MCU and connected transceivers. If the design includes external memories or I/O expanders, follow the manufacturer's bus timing and decoupling guidance in the W77E058A datasheet.
Informações de conformidade
The Mouser listing identifies W77E058A40PL as Pb-free. The cited manufacturer and distributor information does not establish complete RoHS, REACH, halogen-free, conflict-minerals, or AEC-Q100 qualification.