W78E052DPG - 8-Bit 40MHz 8052 MCU | Nuvoton | PLCC-44
N.º de pieza: W78E052DPG ✗ Fin de vidaW78E052DPG Descripción general
An 8051-family microcontroller is a compact CISC controller within the broader embedded-processor and semiconductor hierarchy. Its instruction set and integrated program memory are optimized for control-oriented tasks rather than high-bandwidth computation. The W78E052D family combines that established 8051 execution model with selectable clock configurations, allowing designers to choose an operating frequency appropriate to the required response time and peripheral activity.
The W78E052DPG provides 8 KB of flash memory organized as 8K x 8, providing on-chip program storage without an external memory device for many firmware sizes. Its maximum stated clock frequency of 40 MHz supports faster control loops and responsive peripheral handling. Operation from 2.4 V to 5.5 V also permits integration into both legacy 5 V equipment and modern 3.3 V embedded systems without requiring a separate level-shifting interface for the MCU supply.
The controller uses the 8052-compatible CISC architecture identified by DigiKey and Octopart. This architecture is appropriate for industrial interfaces, keypads, alarms, readers, and compact embedded controllers where deterministic instruction execution, compact firmware support, and peripheral integration matter more than the processing power of a 32-bit MCU. The 44-pin PLCC package exposes the controller's I/O and communication resources while supporting leaded-board assembly.
Typical designs include security and alarm panels, barcode readers, keyboard-video-mouse or KVM controllers, telephone keypads, user-interface controllers, and industrial IPC modules. The family is listed as NRND, so engineers should confirm availability, lifecycle expectations, and transition planning before beginning a new high-volume design. Existing equipment can continue to be supported where exact firmware and package continuity are required.
For a new PCB, use the exact PLCC-44 footprint, preserve the required bypass and oscillator connections shown by the manufacturer datasheet, and validate the programmed clock configuration against the selected supply voltage. If software timing depends on instruction cycles, verify the operating-frequency limits and timing assumptions before production release.
This page consolidates verified distributor specifications, lifecycle information, sourcing links, comparison criteria, and practical replacement guidance. It also distinguishes the exact W78E052DPG ordering code from related W78 devices whose memory, package, or clock characteristics may prevent a literal drop-in replacement.
Alternativas directas para W78E052DPG — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con W78E052DPG (mismo factor de forma y huella) — difiere en Mounting Type, Package.
W78E054DPG
✅ Sustitución directaConsulte el precio
Ver hoja de datos →W78E052DPG Valores máximos y características eléctricas
| Microcontroller Family | W78 8051-compatible series |
| Core | 8052-compatible 8-bit CISC |
| Frecuencia de reloj máxima | 40 MHz |
| Program Memory | 8 KB flash (8K x 8) |
| Supply Voltage Range | 2.4 V to 5.5 V |
| Supported Supply Levels | 2.5 V, 3.3 V, and 5 V |
| Encapsulado | 44-pin PLCC |
| Tipo de montaje | Surface mount |
| Mouser Operating Temperature Range | -40 °C to +70 °C |
| Family Operating Temperature Range | -40 °C to +85 °C |
| Instruction Set | CISC |
| Lead-Free Status | Pb-free |
| Estado del ciclo de vida | Not Recommended For New Designs (NRND) |
| Series Configuration | 6T/12T 8051 MCU configurable |
| Target Applications | Security/alarm, barcode reader, KVM, key phone, UI, and IPC |
| Related Family Packages | LQFP-48, PLCC-44, PQFP-44, TQFP-44, and DIP-40 |
Guía de configuración de pines de W78E052DPG lqfp-48, plcc-44, pqfp-44, tqfp-44, and dip-40
Configuración de pines para W78E052DPG (encapsulado lqfp-48, plcc-44, pqfp-44, tqfp-44, and dip-40). Este CI digital incluye GPIO, interfaces de comunicación (UART, SPI, I2C) y pines de alimentación. Consulte la hoja de datos del fabricante para conocer las funciones alternativas de los pines y las opciones de configuración. Esencial para el diseño de sistemas embebidos y el diseño de PCB.
No hay datos detallados de patillaje disponibles para W78E052DPG.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
W78E052DPG es adecuado para 6 aplicacións: Security and Alarm Control Panels, Barcode Reader Interfaces, KVM and Human-Interface Controllers, Key Telephone Control Boards, Industrial IPC and Embedded Control, Power and System Control Modules.
Security and Alarm Control Panels
The W78E052DPG fits security and alarm control panels because it combines an 8-bit 8052-compatible core, up to 40 MHz operation, and 8 KB of flash in a 44-pin PLCC package. Its 2.4 V to 5.5 V range supports both legacy 5 V systems and lower-voltage control boards. Firmware can manage keypad inputs, sensor states, alarm events, indicator outputs, and communication interfaces from one integrated controller. The principal engineering consideration is lifecycle planning: Nuvoton marks the W78E052D family NRND, so production security equipment should confirm supply continuity and second-source strategy against the exact ordering suffix.
Barcode Reader Interfaces
W78E052DPG is appropriate for compact barcode-reader interfaces that decode or supervise scanner signals and translate them into a host-facing control system. The 40 MHz maximum clock provides responsive handling of digital inputs, serial data, and user feedback, while 8 KB of flash can hold the reader's control firmware, protocol handlers, and configuration logic. Its 2.4 V to 5.5 V supply range also eases integration with scanner modules operating near 3.3 V or 5 V. Designers should use the exact PLCC-44 land pattern and confirm timing, I/O mapping, and interrupt behavior from the manufacturer datasheet before adapting an existing reader controller.
KVM and Human-Interface Controllers
The W78E052DPG can serve as the controller in KVM, keypad, user-interface, and related human-interface modules where firmware coordinates button states, display indicators, switching logic, and host communication. Its 8052-compatible CISC architecture is well matched to compact control tasks, and the 44-pin PLCC package provides more external connections than a small leadless controller without requiring a high-performance processor. The 2.5 V, 3.3 V, and 5 V operating levels documented in the verified results support mixed-voltage equipment. Final selection requires checking whether the exact device has the required serial interfaces, timers, interrupt vectors, and I/O count.
Key Telephone Control Boards
W78E052DPG is suitable for key-phone and telephone-adjacent control boards because the manufacturer identifies key phones as a target application for the W78E052D family. The MCU can coordinate keypad scanning, hook-state inputs, indicator control, and communications while retaining the established expectations of an 8051-based control platform. Its 8 KB flash provides a defined firmware budget, and the 40 MHz clock allows more scheduling margin than lower-rate legacy controllers. Because the family is NRND, an engineer should separately verify clock mode restrictions, oscillator requirements, supply timing, and production availability rather than treating this page as a substitute for a complete timing review.
Industrial IPC and Embedded Control
The W78E052DPG can support compact industrial IPC modules and embedded-control boards where the system primarily manages I/O, timing, communications, and local control functions. The 8-bit 8052-compatible core and 8 KB flash keep the control path economical, while 40 MHz operation and a 2.4 V to 5.5 V range provide useful flexibility in industrial environments. The 44-pin PLCC package is particularly relevant to established leaded-board designs because it can preserve an existing footprint. Engineers should confirm the -40 °C to +70 °C Mouser-listed range for the exact ordering code, validate EMC-related layout practices, and establish a lifecycle plan because the family is NRND.
Power and System Control Modules
W78E052DPG is applicable to small system-control modules that supervise power-related signals, operating states, indicators, and communication with a larger controller. The 2.4 V to 5.5 V operating range allows use near 3.3 V logic systems and established 5 V boards, while the PLCC-44 package exposes a useful mix of I/O for discrete monitoring functions. The 40 MHz clock and 8 KB flash provide capacity for deterministic supervisory firmware rather than complex protocol conversion. A production design should use the manufacturer recommended bypass network, clock implementation, reset arrangement, and programming procedure, and it should verify every safety-related output independently rather than relying on MCU status alone.
Datos de referencia de ingeniería para W78E052DPG — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | W78E054DPG |
|---|---|---|
| Package | PLCC-44 | PLCC-44 |
| Brand | Nuvoton Technology Corporation | Nuvoton Technology Corporation |
| Exact Ordering Suffix | DPG | DPG |
Diferenciadores clave
- Verified exact 8 KB flash configuration (frente a W78E054DPG)
- Verified 40 MHz maximum clock rating (frente a W78E054DPG)
- Verified broad 2.4 V to 5.5 V supply range (frente a W78E054DPG)
Notas de diseño
Use the manufacturer-defined PLCC-44 footprint and verify every signal assignment against the current W78E052D datasheet before releasing artwork. The verified search results identify the package and pin count but do not provide a complete pin table, so footprint assumptions should not substitute for pinout review. Pay particular attention to supply, ground, clock, reset, programming, and no-connect pins. For a legacy board, compare continuity and pin-1 orientation before attempting to replace W78E052DPG with W78E054DPG.
Design the supply rail for the full 2.4 V to 5.5 V operating range while respecting any clock-mode restrictions stated in the manufacturer documentation. Place the required bypass capacitors close to the MCU supply pins, provide adequate return paths for switching current, and avoid routing noisy regulator or relay currents through the same area. Because exact capacitor values and power sequencing requirements are absent from the supplied verified data, use the manufacturer reference circuit and layout instructions rather than estimating values from generic 8051 designs.
Do not assume that a shared W78 family, PLCC-44 package, or 8051 instruction heritage guarantees a drop-in replacement. W78E052DPG and W78E054DPG must be checked for pin-level assignments, flash and SRAM capacity, peripheral availability, interrupt behavior, oscillator options, reset timing, voltage limits, and development-tool compatibility. Legacy firmware can also depend on timing changes even when the application interface appears unchanged. Require a hardware and firmware regression test before approving either part as a replacement.
Follow the manufacturer layout guidance for the clock network, supply connections, and any external programming or reset components. Keep the oscillator path compact and away from switching nodes, and provide a low-impedance ground reference for the device. If the board combines this MCU with relays, display drivers, or switching regulators, separate high-current paths from sensitive control traces. The supplied sources do not provide exact layout dimensions or grounding guidance, so no invented values should be applied.
Información de cumplimiento
Mouser identifies W78E052DPG as Pb-free. RoHS, REACH, halogen-free, conflict-minerals, and automotive-qualification status were not explicitly established for the exact device in the supplied verified data. AEC-Q100 is treated as not applicable because this is an industrial/embedded MCU rather than an automotive-qualified device.
