W78E365A40PL - 8-Bit 40MHz 64KB Flash MCU | Nuvoton
MPN: W78E365A40PL ✓ فعالW78E365A40PL نمای کلی
A microcontroller is a programmable semiconductor that integrates a CPU core, program memory, data memory, and peripherals into one device. The W78E365 belongs to the 8-bit microcontroller hierarchy, uses a 8052-compatible instruction set, and is positioned for compact embedded control systems that need Flash-based firmware updating without removing the device from its circuit. Its in-system programming capability allows firmware to be updated after assembly.
Key characteristics include a 40 MHz operating speed, 64 KB of Flash program memory, 1.25 KB of RAM, 36 I/O pins, an internal oscillator, and Timer 2 output capability. Mouser describes the device as having 64 KB Flash, a 4 KB boot block, and 1 KB plus 256 bytes of RAM, which supports in-system firmware update workflows. The published listing also identifies the W78E365A40PL as a lead-free device.
The 44-LCC package provides 36 digital I/O pins around a relatively compact leaded footprint. This pin count suits control boards that need moderate amounts of discrete input and output while retaining a broadly available through-hole-style package. The 8052-compatible architecture also makes the device relevant to legacy 8051-family codebases where an established instruction set and peripheral arrangement are more important than a higher-bus-width processor.
Typical uses include industrial control modules, appliance controllers, instrumentation interfaces, programmable logic devices, embedded timers, and compact data-acquisition or monitoring boards. A 40 MHz clock gives an 8-bit design additional instruction throughput, while the 64 KB Flash area provides practical room for boot code, application logic, and in-field update tables.
When laying out a board, confirm the pin assignment and alternate-function multiplexing against the manufacturer datasheet before assigning external circuitry. Because this part is packaged in 44-LCC rather than a common small-outline package, verify connector footprint, hole pattern, and assembly thermal requirements early in the mechanical design.
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درخواست جایگزینW78E365A40PL حداکثر مقادیر مجاز و مشخصات الکتریکی
| Microcontroller Type | 8-bit microcontroller |
| Architecture | 8052-compatible |
| Maximum Speed | 40 MHz |
| Program Memory Size | 64 KB Flash |
| Program Memory Organization | 64K x 8 |
| Boot Block | 4 KB |
| RAM Size | 1.25 KB |
| RAM Organization | 1.25K x 8 |
| Number of I/O Pins | 36 pins |
| Oscillator Type | Internal |
| Package Type | 44-LCC (J-Lead) |
| Packaging | Tube |
| In-System Programming | Supported |
| Timer | Timer 2 with output capability |
| Lead-Free Status | Pb-free |
| Program Memory Type | In-system programmable Flash EPROM |
راهنمای پیکربندی پین W78E365A40PL 44-lcc (j-lead)
پیکربندی پین برای W78E365A40PL (پکیج 44-lcc (j-lead)). این IC دیجیتال شامل GPIO، رابط‌های ارتباطی (UART، SPI، I2C) و پین‌های تغذیه است. برای عملکردهای جایگزین پین و گزینه‌های پیکربندی به دیتاشیت سازنده مراجعه کنید. ضروری برای طراحی سیستم‌های نهفته و چیدمان PCB.
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کاربردهای معمول
W78E365A40PL مناسب است برای 6 کاربردs: Industrial Control Modules, Appliance and Equipment Controllers, Programmable Timing and Data Logging, Instrumentation and Sensor Hubs, Legacy 8052 Product Refresh, Programmable Logic and Relay Control.
Industrial Control Modules
The W78E365A40PL fits compact industrial control modules that need an established 8052-compatible code base and a moderate amount of parallel I/O. Its 36 I/O pins can handle limit switches, relay status inputs, actuator outputs, and panel signals, while the 40 MHz clock provides practical throughput for sequencing and state-machine control. The 64 KB Flash area allows application logic, tables, and boot code to coexist. Its 44-LCC package also supports inspection and repair processes that use leaded rather than fine-pitch devices. Before production release, confirm the rated operating voltage and temperature range for the intended industrial environment, and reserve the boot block for controlled firmware recovery.
پیشنهادی
Appliance and Equipment Controllers
The W78E365A40PL is appropriate for appliance and equipment controllers that combine simple user interfaces, motors, relays, and sensors. Thirty-six I/O pins reduce the need for external I/O expanders, and the 8052-compatible architecture allows control firmware to reuse established 8-bit routines. The in-system programmable Flash supports post-build updates and configurable product variants. At 40 MHz, the processor can service multiple timers and interrupt-driven tasks without moving to a higher-bus-width MCU. Engineers should map each signal to the correct port pin and account for alternate functions, then verify timing margins with the production oscillator and load conditions rather than relying only on the nominal 40 MHz grade.
پیشنهادی
Programmable Timing and Data Logging
The W78E365A40PL can serve as the controller in programmable timers, test fixtures, and compact data-logging systems. Its documented Timer 2 output capability supports timing-based functions, while 64 KB of Flash provides room for acquisition tables, event logs, and configuration handling. The 1.25 KB RAM budget suits applications where records are streamed out or processed in small batches. Because memory is relatively constrained, firmware designers should keep buffering bounded and use the boot block for recovery logic rather than a large application image. Verify oscillator accuracy, timer behavior, and serial-interface requirements against the manufacturer datasheet during schematic review.
پیشنهادی
Instrumentation and Sensor Hubs
The W78E365A40PL is suitable for compact instrumentation and sensor-hub boards that collect digital status from multiple sensors and present results through a simple local interface. Its 36 I/O pins allow concurrent connection of digital sensors, alarm lines, and operator inputs without an elaborate bus topology. The 8052-compatible core fits lightweight protocol handling, while in-system Flash programming allows configuration updates in deployed equipment. For analog channels, an external converter is required, and designers should use the datasheet pin table to avoid conflicts with oscillator, reset, programming, and interrupt functions. Confirm the final operating limits before using the device in laboratory or field measurement equipment.
پیشنهادی
Legacy 8052 Product Refresh
The W78E365A40PL is useful for maintaining legacy 8052 products that need a Flash upgrade path without moving to a modern instruction set. Existing control routines can remain within the 8052-compatible architecture, and the in-system programmable 64 KB memory enables firmware revision and field configuration. The 40 MHz speed grade provides more timing margin than many older 8-bit designs, while 36 I/O pins simplify peripheral consolidation. Migration still requires checking register compatibility, peripheral differences, and timing assumptions rather than assuming every 8051-family part is interchangeable. The 44-LCC footprint can also help existing leaded-product layouts retain a familiar assembly process.
پیشنهادی
Programmable Logic and Relay Control
The W78E365A40PL can act as the programmable controller in relay boards and small sequencing systems. Thirty-six I/O pins allow direct connection of relay drivers, interlocks, and status feedback, reducing the need for large I/O expander networks. The 8052-compatible instruction set supports compact ladder-like logic, timing tables, and diagnostic routines, and the 4 KB boot block provides a natural location for startup checks or firmware recovery. Designers should account for inductive transients, isolation requirements, and ground-current behavior at the board level; the MCU does not replace relay protection or isolation hardware. Validate every output sequence against worst-case timing before production release.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای W78E365A40PL — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
یادداشت‌های طراحی
Create the land pattern from the 44-LCC J-Lead package drawing rather than adapting a DIP or generic PLCC footprint. Confirm pad length, toe geometry, and solder-mask clearance, then check the assembly line's ability to handle a leaded surface-mount package. Place the decoupling network at the supply pins and route programming and reset signals away from switching nodes.
Do not treat every 8052-compatible MCU as a pin-compatible substitute. Verify the physical footprint, power pins, oscillator connections, reset behavior, programming interface, port mapping, and interrupt sources against the W78E365A40PL datasheet. The identical Winbond listing for W78E365A40PL should be reviewed at the manufacturer-record level before approval because catalog sources assign the same part number to different manufacturers.
Budget the supply for the MCU, oscillator, pull resistors, and any attached interface circuits rather than the controller alone. The published information establishes a 40 MHz speed grade but does not state the operating-voltage range, so select the power source and regulators from the manufacturer electrical characteristics. Confirm startup and brownout behavior before the board is committed to field deployment.
Assign board signals using the datasheet pin-configuration table because alternate functions can limit the practical use of the 36 I/O pins. Keep sensitive measurement or timing inputs away from relay drivers, high-current edges, and the oscillator loop. If firmware update is required in the field, route the programming interface to a connector or test pads that remain accessible after enclosure assembly.
اطلاعات انطباق
The Mouser listing identifies the W78E365A40PL as Pb-free. RoHS, REACH, halogen-free, and conflict-minerals status were not stated in the available data.
