W78L365A24DL - 24MHz 8052 64KB Flash MCU | Nuvoton
部品番号: W78L365A24DL ✓ 生産中W78L365A24DL 概要
An 8-bit microcontroller is a compact digital controller that executes programmed instructions from nonvolatile flash memory and transfers intermediate data into static RAM. Within the product hierarchy, this device is an embedded MCU, an 8-bit microprocessor, and a member of the 8051/8052-compatible microcontroller family. Its combination of flash memory, parallel I/O, and a 40-pin through-hole package suits legacy-compatible controller boards, industrial equipment, and educational platforms.
The W78L365A24DL offers 64 KB (64K x 8) of flash program memory, including a 4 KB boot block identified in the product specifications. It also includes 1,024 bytes of general RAM plus a 256-byte RAM area, giving a combined listed RAM capacity of 1.25 KB. The 32 I/O pins provide a practical interface count for digital inputs, outputs, control signals, and external peripherals without requiring a high-pin-count surface-mount package.
Operation is specified at up to 24 MHz across a 2.4 V to 4.5 V supply range. These figures make the MCU appropriate for compact embedded systems that use a 3.3 V rail and require more computational headroom than a conventional 8051-class controller operating at lower clock rates. The 40-DIP mechanical format also simplifies prototype construction, socketed assemblies, and manual rework compared with fine-pitch packages.
Typical uses include industrial control modules, data-acquisition equipment, appliance controllers, instrumentation, communication modules, and educational embedded-system platforms. The 32 available I/O pins are particularly useful for systems combining switches, indicator outputs, relays, displays, and serial-interface peripherals. The 64 KB flash area can accommodate a larger firmware image than smaller legacy controllers while retaining compatibility-oriented hardware organization.
When laying out a board, preserve the 40-DIP footprint and verify every signal assignment against the manufacturer pin-description table. Provide a stable supply within 2.4 V to 4.5 V, and choose oscillator, reset, and decoupling components using the circuit requirements in the manufacturer documentation. Because this is a through-hole microcontroller, pay particular attention to socket orientation, pin-1 identification, and adequate clearance around adjacent components.
This page combines the core electrical, memory, packaging, and I/O characteristics with application guidance, sourcing questions, and drop-in replacement criteria. It also separates verified device facts from engineering checks that require the complete manufacturer pinout and circuit documentation before PCB release.
ドロップイン代替品: W78L365A24DL — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
この製品に利用可能なドロップイン代替品はありません。
代替品をリクエストW78L365A24DL 最大定格＆電気的特性
| Microcontroller Type | 8-bit 8052-compatible microcontroller |
| 最大クロック周波数 | 24 MHz |
| Program Memory Size | 64 KB (64K x 8) |
| Program Memory Type | Flash |
| Boot Block Size | 4 KB |
| RAM Size | 1.25 KB (1K + 256 bytes) |
| Number of I/O Pins | 32 |
| Operating Voltage Range | 2.4 V to 4.5 V |
| Processor Core | 8052-compatible core |
| Package Type | 40-DIP through-hole package |
| 実装タイプ | Through-hole |
| Architecture | 8-bit |
W78L365A24DL 40-dip through-hole package ピン配置ガイド
W78L365A24DL (40-dip through-hole package パッケージ) のピン配置。 このデジタルICには、GPIO、通信インターフェース (UART、SPI、I2C)、および電源ピンが含まれています。代替ピン機能と設定オプションについては、メーカーのデータシートを参照してください。組み込みシステム設計とPCBレイアウトに不可欠です。
詳細なピン配置データはありません: W78L365A24DL.
詳細は データシート をご参照ください。
主な用途
W78L365A24DL の用途: 6 件s: Industrial Control Modules, Data Acquisition and Instrumentation, Appliance and Equipment Controllers, Communication Interface Modules, Educational Embedded Platforms, LED Lighting and Display Control.
Industrial Control Modules
The W78L365A24DL fits compact industrial control modules that need deterministic digital I/O, substantial firmware storage, and a straightforward through-hole footprint. Its 32 I/O pins can support limit switches, status indicators, relay drivers, and external interface signals, while 64 KB of flash provides room for control logic, state machines, and communication services. Operation from 2.4 V to 4.5 V suits 3.3 V systems. Before release, confirm the device's temperature rating, isolation strategy, surge protection, and EMC requirements against the installation environment.
おすすめ
Data Acquisition and Instrumentation
The W78L365A24DL is suitable for instrumentation front ends that collect switch states and coordinate an external converter or display. Thirty-two I/O pins give the controller ample parallel connections for sensor enables, multiplexers, data-ready signals, and operator controls. The 8052-compatible architecture and 24 MHz maximum clock support firmware for calibration, filtering, logging, and a user interface. A practical implementation should use the pin-description table to avoid conflicts between programming signals and acquisition channels, then validate timing with the actual converter and external clocking components.
おすすめ
Appliance and Equipment Controllers
The W78L365A24DL can serve as the central controller in appliances, laboratory equipment, and small machines where a modest pin count and readable firmware architecture are valuable. Its 64 KB flash capacity accommodates more application code than the smallest legacy controllers, and its 1.25 KB RAM supports working variables and communication buffers. The 2.4 V to 4.5 V operating range is appropriate for 3.3 V control boards. Designers should isolate loads such as motors and heaters, provide local bulk and bypass capacitance, and verify reset and oscillator behavior during power cycling.
おすすめ
Communication Interface Modules
The W78L365A24DL is appropriate for small communication adapters that combine serial data handling with discrete control lines. Thirty-two I/O pins can support an interface transceiver, status LEDs, mode switches, and handshake signals, while the 24 MHz maximum clock allows the MCU to service protocol processing and supervisory logic. The 40-DIP package simplifies prototype and through-hole assembly. Interface protection still depends on the external transceiver and physical layer, so designers should define connector protection, grounding, and signal-level requirements before connecting the controller to external equipment.
おすすめ
Educational Embedded Platforms
The W78L365A24DL works well in educational 8052-compatible platforms because it combines a readable 40-DIP package with 32 I/O pins, 64 KB flash, and a 24 MHz clock. Students can connect LEDs, switches, displays, sensors, and serial interfaces without handling a dense surface-mount footprint. The 2.4 V to 4.5 V range supports common 3.3 V laboratory rails. For reliable exercises, provide regulated supply rails, bypass capacitors, a reset circuit, and a defined oscillator arrangement, then use the manufacturer pin table to prevent incorrect prototype wiring.
おすすめ
LED Lighting and Display Control
The W78L365A24DL can coordinate LED indicators and segmented or multiplexed displays in equipment-control systems. Its 32 I/O pins provide enough parallel outputs for status lamps, button inputs, and display-control signals, while the 8052-compatible firmware model supports timing, brightness tables, and menu logic. The 3.3 V operating range matches many display-controller rails. Current-limiting resistors or constant-current drivers remain essential for LEDs, and the designer should account for driver-interface voltage levels, refresh timing, and inductive or capacitive loads on display lines.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: W78L365A24DL — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 |
|---|---|
| Brand | Nuvoton Technology Corporation |
| Package | 40-DIP |
| Architecture | 8-bit 8052-compatible |
| Maximum Clock Frequency | 24 MHz |
| Program Memory | 64 KB flash |
| Boot Block | 4 KB |
| RAM | 1.25 KB (1K + 256 bytes) |
| I/O Pins | 32 |
| Operating Voltage | 2.4 V to 4.5 V |
| Mounting Type | Through-hole |
主な差別化要因
- Substantial flash capacity for a legacy-compatible controller （vs Typical 4 KB 8051-class microcontroller)
- Higher maximum operating frequency （vs Typical 12 MHz 8051-class microcontroller)
- Thirty-two parallel I/O pins in a through-hole package （vs Typical 20-pin 8051-class microcontroller)
- Lower-voltage operating range （vs Typical 5 V 8051-class microcontroller)
設計ノート
Confirm the complete 40-DIP pin assignments from the manufacturer pin-description table before routing the PCB. Preserve the pin-1 position and socket orientation, and use the package drawing for all hole diameters and row spacing. The available summaries establish the 40-DIP format but do not reproduce individual signal names, so no peripheral connection should be finalized from the 32-I/O count alone.
Design the supply path for a regulated voltage within the specified 2.4 V to 4.5 V range, including startup and load-transient behavior at the 24 MHz maximum clock. Place local bypass capacitance close to the supply and ground pins according to the manufacturer application circuit. Confirm peripheral current, ground-return paths, and the voltage tolerance of every connected device on the same rail.
Separate clock and sensitive input routing from switching-node and high-current load paths. Keep the oscillator loop short and follow the manufacturer recommendation for the selected crystal or external clock source. Because the 40-DIP package offers generous through-hole spacing, route signals away from the power and ground pins where practical, and place protection components near external connectors rather than beside the microcontroller.
Do not treat an 8051-compatible core as proof that every 8051-family controller has identical peripheral behavior or pinout. Verify memory organization, programming signals, oscillator requirements, reset behavior, and port functions against the manufacturer documentation. Also verify the production temperature grade and environmental requirements before using the device in industrial or extended-temperature installations.
コンプライアンス情報
The available product listings do not state RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive qualification status. AEC-Q100 is not applicable to this general-purpose microcontroller unless a separately qualified automotive grade is specified.
