MC9S08JM8CLD - 8-Bit 48MHz USB MCU | NXP Semiconductors
部品番号: MC9S08JM8CLD ✗ 生産終了MC9S08JM8CLD 概要
A microcontroller is a programmable semiconductor that combines a processor core, memory, and peripherals in one integrated circuit. The MC9S08JM8CLD belongs to the S08 family of 8-bit microcontrollers and is positioned as an economical USB-capable controller for industrial, consumer, and portable-device designs. Its integrated USB interface simplifies USB-to-serial data exchange while conserving board space and reducing the number of external interface components.
The principal features include an S08 8-bit core operating at 48 MHz, 8 KB of flash program memory, 1024 bytes of RAM, and USB 2.0 full-speed device support. The 44-LQFP package provides 44 external leads and is suitable for automated board assembly. The device supports 3.3 V and 5 V operating environments, allowing its use in both legacy 5 V USB designs and modern 3.3 V systems. Exact peripheral inventories, electrical limits, and timing parameters should be confirmed in the manufacturer datasheet before final design release.
The S08 architecture uses an 8-bit processing model suited to control tasks, USB data handling, status reporting, and communication management rather than graphics, high-bandwidth storage, or intensive signal processing. Its integrated USB controller makes it useful as the principal application processor in compact USB peripherals, where a higher-performance MCU would add cost or design complexity without providing a corresponding system benefit.
Typical uses include USB-connected data acquisition devices, portable instrumentation, configuration tools, simple human-interface peripherals, and industrial service interfaces. Designers can place the device between a USB connector and the controlled subsystem, then use its on-chip USB peripheral to exchange serial data while timers, communications peripherals, and general-purpose I/O handle local control functions.
When laying out the board, route USB D+ and D- as a controlled impedance differential pair and minimize the distance between the controller, connector, and protection components. Confirm the pin-multiplexing and alternate-function requirements in the manufacturer pin-description table, and account for every supply and ground connection before routing. Because the device is listed as end of life, new production designs should include a formal lifecycle and sourcing review.
This page combines the manufacturer's lifecycle information, distributor specifications, technical search results, and application-oriented engineering guidance to clarify where the MC9S08JM8CLD fits. It also distinguishes verified drop-in options from merely similar devices, helping engineers avoid assuming that equal flash capacity and package size guarantee peripheral, pinout, timing, or software compatibility.
ドロップイン代替品: MC9S08JM8CLD — 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MC9S08JM8CLD 最大定格＆電気的特性
| Product Type | 8-bit USB microcontroller |
| Manufacturer | NXP Semiconductors |
| Processor Family | S08 |
| Processor Architecture | S08 8-bit CISC core |
| 最大クロック周波数 | 48 MHz |
| Flash Memory | 8 KB (8K x 8) |
| RAM | 1024 bytes |
| USB Interface | USB 2.0 full-speed device |
| 動作電源電圧 | 3.3 V or 5 V |
| パッケージ | 44-LQFP (10 x 10 mm) |
| 実装タイプ | Surface mount |
MC9S08JM8CLD 44-lqfp (10 x 10 mm) ピン配置ガイド
MC9S08JM8CLD (44-lqfp (10 x 10 mm) 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: MC9S08JM8CLD.
詳細は データシート をご参照ください。
主な用途
MC9S08JM8CLD の用途: 6 件s: USB Data Acquisition Adapter, Portable USB Test Instrument, Industrial Configuration Interface, Portable Medical Data Logger, USB Communications Peripheral, USB-Capable Sensor Node.
USB Data Acquisition Adapter
The MC9S08JM8CLD fits compact data-acquisition adapters because its 48 MHz 8-bit S08 core can coordinate USB 2.0 full-speed device communication while 8 KB of flash holds device firmware and 1024 bytes of RAM supports short command and data buffers. The device can poll sensors, format readings, and exchange configuration data over one USB connection without requiring an external USB controller. Designers should keep USB routing short, confirm available peripheral functions in the datasheet, and avoid treating the relatively small RAM as a substitute for external buffering.
おすすめ
Portable USB Test Instrument
A portable diagnostic instrument can use the MC9S08JM8CLD as the USB-facing controller for command parsing, status reporting, and control of local analog or switching hardware. Its 48 MHz processing rate supports responsive 8-bit firmware control, while 8 KB of flash is sufficient for focused single-purpose applications. The 44-LQFP 10 x 10 mm package helps preserve board area in handheld equipment. Firmware should include enumeration handling, timeout recovery, and a clear memory budget because the MCU includes only 1024 bytes of RAM.
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Industrial Configuration Interface
The MC9S08JM8CLD can serve as an embedded configuration interface in industrial equipment that exposes service settings or diagnostic records through USB. Its integrated USB 2.0 full-speed device interface reduces the need for separate communication hardware, and the 48 MHz S08 core can manage protocol handling alongside timers and I/O. A robust implementation should isolate external circuitry from USB lines, validate commands before changing machine state, and provide a safe recovery path if enumeration or power removal interrupts an update.
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Portable Medical Data Logger
The MC9S08JM8CLD can coordinate low-bandwidth acquisition and USB transfer in a portable medical data logger where device size and USB integration are important. The 8-bit S08 core at 48 MHz can supervise sensors and packet preparation, while the 8 KB flash stores firmware and limited configuration information. Medical designs require additional attention to electrical isolation, safety validation, data integrity, and regulatory evidence beyond ordinary commercial USB use. Firmware should include sequence checks and stored-data integrity validation before transmission.
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USB Communications Peripheral
The MC9S08JM8CLD is suitable for a dedicated USB communications peripheral that translates host commands into local control signals. Its USB 2.0 full-speed device capability handles the host link, while timers, serial functions, and general-purpose I/O can support relays, indicators, or external converters. The 1024-byte RAM constraint favors short packet processing and interrupt-driven data handling rather than large buffering. The design should define enumeration behavior and bus-powered current limits explicitly, then verify them against the complete electrical specification.
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USB-Capable Sensor Node
The MC9S08JM8CLD can form the core of a small USB-powered sensor node that samples a limited set of inputs and sends readings to a host computer. Its 48 MHz core provides headroom for straightforward control firmware, and 8 KB of flash accommodates a compact application while 1024 bytes of RAM supports immediate acquisition state. The node should use the MCU's USB interface for data transport, but it must also address sensor conditioning, input protection, and power-supply stability. End-of-life status requires an explicit availability plan before deployment.
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おすすめ製品の概要
エンジニアリング参考データ: MC9S08JM8CLD — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
主な差別化要因
- Higher listed clock rate than the closest identified S08 comparison （vs MC9S08AC8CFGE)
- Integrated USB connectivity in a compact 10 x 10 mm package （vs MC9S08AC8CFGE)
- Application-specific selection is constrained by end-of-life status （vs MC9S08AC8CFGE)
設計ノート
Route USB D+ and D- as a short, continuous impedance-controlled differential pair, with the MCU, connector, and protection components positioned to minimize stubs. Place required USB termination and bias components according to the manufacturer reference circuit. Decoupling capacitors should be located close to the device's supply pins, while the complete pin and alternate-function assignments must be taken from the manufacturer datasheet.
Design the USB and MCU supply path for the actual bus configuration, including attached-device versus self-powered operation. Confirm maximum supply voltage, input current, and internal regulator behavior in the electrical characteristics before adding local filtering. Avoid placing long unregulated supply traces between the USB connector and the MCU; verify startup behavior and the allowed operating sequence with the manufacturer's recommended circuit.
Do not assume that an 8 KB flash device with a 44-LQFP package is interchangeable with another S08 MCU. The clock rate, pin multiplexing, peripheral assignments, interrupt vectors, USB implementation, and software configuration can differ even when memory and package dimensions match. Create a pin-by-pin and register-level comparison before approving any substitution, and include application migration and USB enumeration testing.
Plan the firmware memory budget before committing to additional board functions. The MCU has 8 KB of flash and 1024 bytes of RAM, so USB descriptors, communication buffers, protocol handlers, and application logic must share a limited memory budget. Prefer interrupt-driven transfers, avoid unnecessary copies, and reserve stack space for USB interrupt and call nesting. Verify the supported USB boot and programming configuration before laying out test points.
コンプライアンス情報
The available product information identifies the device as an NXP S08 8-bit USB microcontroller and lists it as End of Life, but it does not state the requested compliance outcomes.
