MC908JL3ECDWE - 8-Bit 8MHz 4KB MCU | NXP | 28-SOIC
MPN: MC908JL3ECDWE ✗ Cuối đờiMC908JL3ECDWE Tóm tắt
An MCU is a semiconductor that integrates a processor core, program memory, data memory, and peripherals into one device. A microcontroller is therefore more specific than a general-purpose microprocessor: the embedded system can execute firmware and control I/O without requiring a separate external memory device. In the M68HC08 hierarchy, this device is an 8-bit MCU using the CPU08 central processing unit.
Verified distributor information identifies the MC908JL3ECDWE as an HC08 device with 8-bit architecture, 8 MHz operation, and 4 KB, or 4K by 8, Flash memory. Its 28-SOIC package supports surface mounting on existing legacy boards. The listed 3.3 V and 5 V compatibility is useful when servicing equipment designed around either supply level. Exact RAM, peripheral, electrical-limit, and temperature-range values were not supplied in the verified search data and therefore remain marked for data confirmation.
Typical uses for this class of controller include appliance controls, industrial equipment, instrumentation, simple motor-control nodes, and legacy embedded systems. Before substituting any MPN, engineers should compare the complete pinout, memory map, clock behavior, interrupt vector table, peripherals, electrical limits, and firmware compatibility. A matching package alone does not guarantee a functional drop-in replacement.
For a new design, prioritize an NXP part that NXP currently recommends for new designs. For an existing board, preservation of the original part number is preferable because changing instruction sets, peripherals, pin multiplexing, or memory organization can require firmware and hardware changes. The SOIC footprint is also larger than many current MCU packages, although that difference may be irrelevant when repairing an existing PCB.
Bộ thay thế dễ dàng lắp đặt cho MC908JL3ECDWE — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với MC908JL3ECDWE (cùng hình factor và footprint) — khác nhau ở Package, Product Type, Core, Program Memory, Program Memory Size.
Không có bộ thay thế dễ dàng lắp đặt sẵn có cho sản phẩm này.
Yêu cầu các bộ thay thếMC908JL3ECDWE Tỷ lệ tối đa & tính chất điện
| Product Type | 8-bit microcontroller unit (MCU) |
| Architecture | 8-bit HC08 CISC |
| CPU | M68HC08 CPU08 core |
| Tần số xung maksimum | 8 MHz |
| Flash Memory | 4 KB (4K x 8) |
| Program Memory Type | Flash |
| Supply Compatibility | 3.3 V and 5 V |
| Hộp | 28-pin SOIC wide |
| Kiểu lắp đặt | Surface mount |
| Series | MC908 |
| Microcontroller Family | M68HC08 |
| Trạng thái vòng đời | Obsolete |
| Lead-Free Status | PB-free finished goods |
| Program Memory Words | 4096 x 8 bits |
| Maximum Pin Count | 28 pins |
Hướng dẫn cấu hình chân MC908JL3ECDWE 28-pin soic wide
Cấu hình chân cho MC908JL3ECDWE (28-pin soic wide gói). IC số này bao gồm chân GPIO, giao diện truyền thông (UART, SPI, I2C) và chân nguồn. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết các chức năng chân thay thế và tùy chọn cấu hình. Cực kỳ quan trọng cho thiết kế hệ thống tích hợp và lập trình PCB.
Không có dữ liệu chân cụ thể sẵn có cho MC908JL3ECDWE.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
MC908JL3ECDWE phù hợp cho 6 Áp dụngs: Legacy Appliance Control, Industrial Instrumentation Repair, Simple Motor-Control Node, Embedded Data Acquisition, IoT Sensor Gateway Retrofit, Educational Electronics Platform.
Legacy Appliance Control
The MC908JL3ECDWE fits maintenance of an appliance controller that was designed around the 8-bit M68HC08 family, an 8 MHz operating point, and 4 KB of Flash. Its 28-SOIC package allows reuse of the original board footprint when components have been removed. The verified 3.3 V and 5 V compatibility can simplify inspection across related equipment revisions. Because the MCU is obsolete, engineers should prefer an exact original part, verify its date code, and preserve the existing firmware rather than assuming that a family variant is interchangeable.
Được đề xuất
Industrial Instrumentation Repair
The 8-bit CPU08 architecture and 4 KB program memory make the MC908JL3ECDWE relevant to legacy instruments that perform compact sequencing, measurement conditioning, status reporting, or actuator control. An 8 MHz clock supports the original product's control tasks, while the 28-SOIC package preserves established routing. For maintenance, first confirm the exact MCU marking and compare reset and peripheral connections. A newer controller should be selected for long-term availability when a redesign is acceptable, with firmware and board validation planned in parallel.
Được đề xuất
Simple Motor-Control Node
The MC908JL3ECDWE can be retained in a legacy low-speed motor-control or sequencing node when the existing firmware already matches its CPU08 core, 4 KB Flash, and peripheral configuration. Its 8 MHz operation and surface-mount 28-SOIC construction suit compact control boards built around the original design. Supply voltage must match the supported 3.3 V or 5 V equipment architecture. Do not substitute solely by family name, because timer channels, pin multiplexing, edge behavior, and drive timing must remain compatible with the existing firmware and power stage.
Được đề xuất
Embedded Data Acquisition
The MC908JL3ECDWE can support a legacy acquisition controller when it performs sensor selection, digital filtering, status logging, and communication through already verified board peripherals. Its 4 KB Flash constrains firmware size, while the 8 MHz HC08 core matches the processing assumptions of the original product. For an operating instrument, exact-part preservation reduces the chance of introducing sampling or timing changes. Confirm sensor interfaces, serial baud-rate support, ADC resources, and calibration routines from the complete manufacturer documentation before installation.
Được đề xuất
IoT Sensor Gateway Retrofit
The MC908JL3ECDWE may serve in a brownfield IoT retrofit where an existing 28-SOIC controller board reads local sensors and drives indicators or relays. The verified 8 MHz HC08 performance and 4 KB Flash are suitable only when the current firmware already fits that resource envelope. Compatibility with 3.3 V and 5 V helps during mixed-generation repairs. For connected equipment, cybersecurity and long-term supply constraints favor a supported MCU unless preserving the old controller is essential; any communication implementation should be audited before field deployment.
Được đề xuất
Educational Electronics Platform
The MC908JL3ECDWE remains useful for training an existing HC08 laboratory board because students can preserve the original CPU08 firmware, 28-SOIC footprint, and 8 MHz operating assumptions. It provides a concrete platform for studying an 8-bit CISC microcontroller, embedded memory, reset behavior, interrupts, and peripheral control. Because the part is obsolete, schools should inventory test samples and plan a planned migration before acquiring large quantities. Replacement boards should use a supported MCU and updated teaching material rather than treating unrelated HC08 models as pin-compatible.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MC908JL3ECDWE — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
Bảo phân biệt quan trọng
- Original CPU08 architecture and memory configuration (vsMC908JL3EMDWE)
- Exact-part maintenance support (vsMC908JK8CDWE)
- Known supply-voltage compatibility (vsMC908JK1ECDWER)
Ghi chú thiết kế
Do not infer pin compatibility from an HC08 family name. Confirm the exact package suffix, all 28 pin assignments, programming signals, reset behavior, clock pins, and alternate peripheral functions against the manufacturer data sheet. Several related MC908 identifiers appeared in the supplied search results, but no candidate was proven to be a drop-in replacement. For maintenance, use the original MPN whenever possible and verify the device marking, pin count, and supply requirements before soldering.
Identify whether the target board uses 3.3 V or 5 V before replacing the MCU. Both levels are mentioned in the verified source snippets, but maximum voltage, current, and detailed operating limits are not supplied. Check the board's regulator ratings, decoupling, reset pull-up, and programming-interface voltage. Misconnecting VDD or exposing an unsupported input voltage can permanently damage an obsolete replacement that may be difficult to source.
Preserve the original 28-SOIC land pattern and verify the package variant is the wide-body form associated with the target board. Inspect whether any replacement candidate has different terminal width, lead pitch, pin numbering, or exposed thermal features; the supplied evidence does not establish such compatibility. Clean pad oxidation, use appropriate lead-free rework profiles, and inspect the underside for bridging after reflow because adjacent 28-pin pads can short if solder bridges are not removed.
Thông tin tuân thủ
Mouser identifies the part as PB-free finished goods. Explicit RoHS, REACH, halogen-free, and conflict-minerals statements were not present in the supplied verified data.
