W78E058DLG - 8-Bit 40MHz 32KB Flash MCU | Nuvoton
Référence : W78E058DLG ✓ ActifW78E058DLG Présentation
An 8-bit microcontroller is a compact embedded-control IC used to execute firmware, read inputs, control outputs, and coordinate peripheral functions. In the product hierarchy, the W78E058DLG is a microcontroller, a programmable semiconductor, and a member of Nuvoton's 8051-family devices. Its 40 MHz operating clock provides the execution rate for embedded control tasks, while its 32 KB Flash memory provides nonvolatile program storage for application firmware.
The principal verified characteristics are the 8-bit CPU architecture, 40 MHz maximum clock, 32 KB Flash configuration, 512-byte Flash information area reported by LCSC, 2.4 V to 5.5 V supply range, and 48-LQFP package. These parameters position the device for compact embedded systems operating from conventional 5 V supply rails or lower-voltage circuitry within the stated range. The supplied distributor records do not expose detailed RAM size, peripheral configuration, timer channels, ADC characteristics, or package pin assignments.
The W78E058DLG combines embedded processing and Flash program storage in a surface-mount LQFP-48 format. Its 7 mm by 7 mm body provides a mechanically manageable option for leaded through-hole assembly where a QFN package would be unsuitable. At 40 MHz, the device offers substantially more timing headroom than legacy 8051 systems commonly clocked at much lower frequencies, although actual response time still depends on the instruction mix and firmware workload.
Typical engineering uses include compact industrial controllers, appliance-control modules, motor-control peripherals, data-acquisition front ends, and embedded sensor interfaces when the selected firmware and external circuitry match the device's documented resources. The 5.5 V maximum supply supports conventional industrial and consumer logic environments, while the 2.4 V minimum allows operation from suitably regulated lower-voltage rails.
Design work should begin by confirming every required peripheral, memory resource, and package pin against the manufacturer datasheet before schematic capture. Designers should not infer ADC, timer, serial-interface, or GPIO capabilities from the family name alone because those details were not present in the supplied verified data. The 48-pin LQFP footprint also requires adequate routing space around all leads and appropriate solder-assembly profile control.
This page consolidates the exact distributor-reported W78E058DLG specifications, current pricing evidence, sourcing links, and replacement-status information. It also separates verified facts from unresolved attributes, helping engineers avoid treating distributor snippets as a substitute for the complete manufacturer datasheet when making PCB or firmware decisions.
Alternatives de remplacement direct pour W78E058DLG — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
N78E059APG
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
W78E058DLG Valeurs maximales et caractéristiques électriques
| Microcontroller Type | 8-bit 8051-compatible microcontroller |
| Maximum CPU Clock | 40 MHz |
| Program Memory Type | Flash |
| Program Memory Size | 32 KB |
| Program Memory Organization | 32K x 8 bits |
| Flash Information Area | 512 bytes |
| Tension d'alimentation de fonctionnement | 2.4 V to 5.5 V |
| Package Type | 48-LQFP |
| Package Dimensions | 7 mm x 7 mm |
| Type de montage | Surface mount |
| Lead Condition | Pb-free |
| Température de fonctionnement | -40 °C to 70 °C |
| Statut RoHS | compliant |
Guide de configuration des broches du W78E058DLG 7 mm x 7 mm
Configuration des broches du W78E058DLG (boîtier 7 mm x 7 mm). Ce circuit intégré numérique comprend des GPIO, des interfaces de communication (UART, SPI, I2C) et des broches d'alimentation. Consultez la fiche technique du fabricant pour les fonctions alternatives des broches et les options de configuration. Indispensable pour la conception de systèmes embarqués et la conception de circuits imprimés.
Aucune donnée de brochage détaillée disponible pour W78E058DLG.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
W78E058DLG convient pour 6 applications: Compact Industrial Control Module, Appliance and Household Controller, Sensor and Acquisition Front End, Motor and Actuator Control Peripherals, Communication Protocol Interface, Data Logger and Embedded Storage Controller.
Compact Industrial Control Module
The W78E058DLG fits compact industrial-control modules that use an 8-bit 8051-compatible architecture and require firmware storage without a high-cost application processor. Its verified 40 MHz clock supplies useful execution margin for coordinating discrete control functions, while 32 KB of Flash provides nonvolatile space for application code. The 2.4 V to 5.5 V operating range allows use around regulated 5 V industrial logic rails. Before assigning peripheral functions, engineers must confirm timer, serial-interface, GPIO, and interrupt resources in the manufacturer datasheet because those details were not present in the supplied distributor records.
Appliance and Household Controller
The W78E058DLG can support appliance or household controllers where a compact embedded controller must combine a 5 V-compatible supply range with nonvolatile program storage. Its 40 MHz 8051-compatible core is suitable for coordinating buttons, indicators, relays, and communication logic when the firmware workload remains within the documented device resources. The 48-LQFP package is mechanically practical for mixed-assembly boards where a fine-pitch QFN would be inconvenient. Firmware developers should verify wake-up behavior, ADC availability, port count, and watchdog features directly in the datasheet before committing the part to a safety-relevant appliance control path.
Sensor and Acquisition Front End
The W78E058DLG is a candidate for a small sensor-acquisition front end that needs local processing and a 5 V-class interface environment. The 32 KB Flash can hold acquisition-control and filtering firmware, while the 40 MHz clock provides timing margin for digital filtering and data preparation. Its 2.4 V minimum operating voltage also permits use in regulated 3.3 V or other within-range power systems. The critical unresolved item is analog conversion capability: the supplied records do not identify an ADC resolution or channel count, so the device should only be selected after the datasheet confirms the required sensor interface, sample rate, and input ranges.
Motor and Actuator Control Peripherals
The W78E058DLG may be used in compact motor or actuator-control peripherals where an 8-bit MCU executes a defined control sequence and manages external driver circuitry. Its verified 40 MHz clock offers timing headroom, and the 2.4 V to 5.5 V range suits common logic-compatible power architectures. The MCU does not by itself replace a motor driver, current sensing, or protection circuitry; those functions depend on the application and must be added externally. Timer outputs, capture channels, PWM resolution, and pin assignments must be checked against the manufacturer documentation before the component is approved for a motor-control PCB.
Communication Protocol Interface
The W78E058DLG can serve as the host controller in a dedicated protocol-conversion or command-interface module when its documented serial resources match the design. Its 32 KB Flash stores protocol tables or firmware, and the 40 MHz 8051-compatible core can manage framing, state handling, and host responses. The 48-LQFP footprint provides enough physical leads for embedded systems that still prefer a leaded package. The supplied data does not identify UART, SPI, I2C, or CAN capabilities, so engineers must not assign these interfaces based on family conventions; the complete peripheral list and multiplexed-pin plan require direct datasheet verification.
Data Logger and Embedded Storage Controller
The W78E058DLG is suitable for a small embedded data-logging controller when the final firmware fits within the verified 32 KB Flash allocation and the application uses external storage for larger records. Its 8-bit architecture and 40 MHz clock are appropriate for coordinating sensors, formatting data, and controlling an external nonvolatile device. The 2.4 V to 5.5 V supply range is compatible with common embedded rails, while the Pb-free 48-LQFP package supports qualified surface-mount assembly processes. Confirm RAM capacity, external memory interface availability, write endurance responsibilities, and watchdog behavior before using the MCU as the sole coordinator for safety-relevant logging.
Données de référence d'ingénierie pour W78E058DLG — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | N78E059APG |
|---|---|---|
| Manufacturer | Nuvoton Technology Corporation | Nuvoton Technology Corporation |
| Package | 48-LQFP | 48-LQFP candidate footprint; final verification required |
| CPU Architecture | 8-bit 8051-compatible | 8051 MCU |
| Maximum Clock | 40 MHz | 40 MHz |
| Replacement Status | Original MPN | Explicitly identified as a replacement candidate for W78E058DLG |
Principaux différenciateurs
- Original exact-orderable device with verified Flash configuration (vs N78E059APG)
- Documented supply range for conventional embedded logic rails (vs N78E059APG)
- Known package body dimensions for layout planning (vs N78E059APG)
Notes de conception
Use the verified 48-LQFP, 7 mm by 7 mm package data to establish the PCB land pattern and courtyard before routing. Confirm lead pitch, exposed-pad presence, pin-one orientation, and soldering recommendations from the manufacturer drawing because the supplied snippets do not include the mechanical diagram. Keep analog, communication, and switching-node routes away from MCU supply and ground pins where practical.
Place the local 5 V or other in-range supply bypass capacitance close to the MCU's supply and ground pins. The verified operating range is 2.4 V to 5.5 V, so the supply regulator, wiring drops, transient excursions, and power-state transitions must all remain within that range. Confirm which pins require external decoupling and which rails must be sequenced by reading the manufacturer datasheet before schematic release.
Do not infer RAM capacity, timer channels, ADC resolution, GPIO count, or serial-interface availability from the W78E058 family name. The supplied distributor snippets establish the 40 MHz clock, 32 KB Flash, voltage range, and package but omit most peripheral details. Build the application only after checking the exact datasheet pin table, memory map, interrupt vector, clock tree, and electrical characteristics for W78E058DLG.
Informations de conformité
The LCSC result labels W78E058DLG RoHS, and the Mouser result describes it as Pb-free. No explicit REACH, halogen-free, conflict-minerals, or AEC-Q100 evidence was supplied.
