W78E058DFG - 8-Bit 40MHz 32KB Flash MCU | Nuvoton
부품 번호: W78E058DFG ✓ 활성W78E058DFG 개요
An 8-bit microcontroller is a compact embedded processor designed to execute firmware that senses inputs, controls outputs, and manages communication or timing tasks. The W78E058DFG belongs to the W78 8051-family hierarchy, where the 8052 CPU combines an 8-bit CISC architecture with integrated program memory, RAM, and peripheral functions. This places it between general-purpose microcontrollers and simple fixed-function controllers for designs requiring flexible firmware-based behavior.
The primary verified features are 32 KB of flash program memory, 512 bytes of internal RAM, a 40 MHz operating speed, 36 I/O pins, and a 2.4 V to 5.5 V supply range. Its 44-pin PQFP form factor supports conventional leaded-board assembly and provides more connection positions than smaller 8-bit packages. The W78E058D family is also described by Nuvoton as configurable and pin-compatible with traditional 12T 8051 designs, making the device relevant to legacy 8051 board upgrades when the electrical and peripheral requirements are matched.
The W78E058D family uses an 80C51-compatible CISC architecture. Program storage in flash supports firmware revision and configuration tasks that are more difficult with mask-programmed devices, while 512 bytes of RAM support working variables, stack operations, and small data buffers. A 40 MHz clock rating provides additional timing headroom for multi-step serial communication, control loops, and periodic peripheral servicing, although actual throughput depends on the instruction mix and firmware implementation.
Typical application areas include industrial controllers, connected sensing equipment, compact automation controllers, motor-control interfaces, utility or product metering, and embedded IoT nodes. The 36 available I/O positions are particularly useful when a system needs discrete sensing and actuator connections in addition to its serial interfaces. Firmware and peripheral configuration should be checked against the selected W78E058D package variant before design release.
For hardware design, use the 44-pin PQFP land pattern, validate the selected oscillator and reset implementation against the manufacturer datasheet, and place bypass capacitors close to the supply pins. The permitted operating range of 2.4 V to 5.5 V must also be checked for every attached peripheral and communication device. The supplied search results do not expose the complete pin map, so pin assignments should not be inferred from generic 8051 diagrams without cross-checking the official data.
드롭인 대체품: W78E058DFG — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 제품에는 사용 가능한 드롭인 대체품이 없습니다.
대체품 요청W78E058DFG 최대 정격 & 전기적 특성
| Microcontroller Type | 8-bit 8052-compatible W78 microcontroller |
| CPU Architecture | 80C51-compatible CISC |
| 최대 클록 주파수 | 40 MHz |
| Program Memory Size | 32 KB (32K x 8) flash |
| RAM Size | 512 bytes (512 x 8) |
| Operating Supply Voltage Range | 2.4 V to 5.5 V |
| Number of I/O Pins | 36 |
| 패키지 | 44-pin PQFP |
| 동작 온도 범위 | -40 °C to 85 °C |
| Lead-Free Status | Pb-free |
W78E058DFG 44-pin pqfp 핀 구성 가이드
W78E058DFG(44-pin pqfp 패키지)의 핀 구성입니다. 이 디지털 IC에는 GPIO, 통신 인터페이스(UART, SPI, I2C), 전원 핀이 포함되어 있습니다. 대체 핀 기능과 구성 옵션은 제조사 데이터시트를 참조하십시오. 임베디드 시스템 설계와 PCB 레이아웃에 필수적입니다.
다음에 대한 상세 핀아웃 데이터 없음: W78E058DFG.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
W78E058DFG 적합 용도: 6 애플리케이션s: Industrial Embedded Controllers, Industrial IoT Sensor Nodes, Metering and Data Acquisition, Motor Control and Actuator Interfaces, Embedded Automation Equipment, Low-Power Control Boards.
Industrial Embedded Controllers
The W78E058DFG fits compact industrial controllers that require deterministic firmware execution, moderate program storage, and numerous discrete connections. Its verified 32 KB flash accommodates control logic, configuration handling, and firmware revisions, while 36 I/O pins provide ample connections for discrete inputs, outputs, status indicators, and actuator interfaces. The 40 MHz clock rating also leaves timing headroom for periodic scanning, protocol servicing, and supervisory tasks. The 2.4 V to 5.5 V operating range supports designs built around multiple common supply levels. Engineers should still confirm interrupt allocation, timer resources, communication peripherals, and the exact pin functions in the official Nuvoton data sheet before assigning every board signal.
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Industrial IoT Sensor Nodes
The W78E058DFG is suitable for compact IoT sensor nodes that combine local sensing, state-machine logic, and serial data reporting. Its 512 bytes of RAM support working data, while 32 KB of flash can hold application firmware, calibration data, and communication routines. The 36 available I/O pins support multiple discrete sensors, local alarms, indicators, and interface signals without requiring a large external I/O expander. Operating from 2.4 V to 5.5 V provides useful supply flexibility in mixed-voltage equipment. For low-power operation, developers should verify sleep modes, wake sources, oscillator startup behavior, and peripheral shutdown settings, because these details are not included in the supplied search excerpts.
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Metering and Data Acquisition
The W78E058DFG can serve as the control processor in metering and compact data-acquisition equipment where measurements must be converted into local calculations or transmitted records. A 40 MHz maximum clock provides useful throughput for sampling coordination, filtering, calibration-table access, and communication framing, while 32 KB flash is sufficient for embedded firmware and configuration storage. Its 36 I/O pins allow sensor inputs, capture signals, displays, and communications peripherals to share a controlled platform. Because the verified snippets do not specify ADC resolution, sampling channels, or serial interfaces, analog and digital acquisition designs must confirm those resources directly from the W78E058D data sheet rather than inferring them from the generic 8052 designation.
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Motor Control and Actuator Interfaces
The W78E058DFG is relevant to small motor-control and actuator-interface modules because it combines 36 I/O pins with a 40 MHz clock and 32 KB of programmable flash. Engineers can use the I/O capacity for control signals, fault inputs, interlocks, and external driver coordination while firmware manages sequencing and protection. Its 2.4 V to 5.5 V operating range can simplify support for industrial and embedded control boards, although motor-interface levels normally require suitable buffers or drivers. The device must not be assumed to contain a dedicated motor-control timer or advanced-control peripheral because those details are absent from the supplied data. Verify PWM channels, capture inputs, fault handling, and timing limits against the official data sheet.
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Embedded Automation Equipment
The W78E058DFG can act as the central controller in embedded automation equipment such as sequencers, small machinery controllers, and auxiliary automation modules. Its flash memory supports field-reconfigurable operating logic, and its 36 I/O pins can distribute connections among sensors, relays, indicators, and communications circuits. The 40 MHz rating provides additional instruction throughput for state machines and multi-protocol routines, while the wide 2.4 V to 5.5 V range supports varied industrial board architectures. Safety-related designs must evaluate watchdog behavior, brownout handling, reset sources, and fault containment separately. These protections, along with timer and communication resources, should be confirmed from the manufacturer data sheet before the MCU is approved for machinery control.
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Low-Power Control Boards
The W78E058DFG is applicable to low-power embedded control boards that need local decision-making without adopting a higher-bit processor. Its 512 bytes of RAM supports compact working sets, while 32 KB of flash provides room for dedicated control and update code. The 36 I/O pins permit direct sensing and actuation, reducing the need for additional interface components in suitable designs. Its 2.4 V minimum supply voltage also allows operation from low-voltage rails, but actual energy use depends on clock selection, active versus sleep mode behavior, peripheral loading, and board leakage. Those parameters are not present in the verified excerpts and must be reviewed in the official documentation before making battery-life claims or selecting a power-management topology.
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추천 제품 요약
엔지니어링 참조 데이터: W78E058DFG — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | W78E058DDG | W78E054DPG | W78E052DFG |
|---|---|---|---|---|
| Brand | Nuvoton Technology Corporation | Nuvoton Technology Corporation | Nuvoton Technology Corporation | Nuvoton Technology Corporation |
주요 차별점
- Documented 40 MHz maximum operating speed (vs W78E052DFG)
- 32 KB of flash program memory (vs W78E054DPG)
- 36 I/O pins in a 44-pin PQFP (vs W78E058DDG)
설계 노트
Use the official 44-pin PQFP DFG land pattern rather than a generic 44-pin footprint. Place the device so every pin remains accessible for inspection and assembly, and verify pin-one orientation against the manufacturer drawing. Because the supplied excerpts do not expose the complete pin map, do not derive VDD, VSS, reset, oscillator, programming, or I/O assignments from a generic 8051 symbol. Confirm those connections and the exposed programming interface directly against the Nuvoton W78E058D data sheet.
Design the supply network for the verified 2.4 V to 5.5 V operating range and place the required bypass capacitors close to the device's supply and ground pins. Check regulator tolerance, startup ramps, and brownout behavior against the actual board conditions. The verified material does not identify the number and value of bypass capacitors or the internal power architecture, so use the manufacturer recommended circuit rather than copying values from an unrelated 8051 design.
Separate clock, programming, and communication routing from sensitive analog or high-speed switching nodes, and provide a quiet ground return for the MCU. Keep oscillator routing short and follow the manufacturer's grounding and decoupling recommendations. If the W78E058DFG drives relays, solenoids, lamps, or motor interfaces, route those outputs away from the controller and include suitable protection. The exact internal oscillator and I/O topology remain undocumented in the supplied snippets and should be resolved from the official data sheet.
규정 준수 정보
The verified Mouser listing identifies W78E058DFG as Pb-free. No verified RoHS, REACH, halogen-free, conflict-minerals, or AEC-Q100 declaration was supplied.
