MC9S08JS8CFK - 8-Bit 48MHz USB 2.0 MCU | NXP Semiconductors
部品番号: MC9S08JS8CFK ✓ 生産中MC9S08JS8CFK 概要
An HCS08 microcontroller is an 8-bit embedded-control processor within the broader microcontroller and semiconductor hierarchy. The S08JS family is intended for applications that need moderate processing performance, fast flash execution and direct USB connectivity without requiring a separate transceiver. Its bus-oriented architecture supports peripheral integration, event-driven control and low-cost USB peripheral designs.
Key device characteristics include an 8-bit CPU operating at up to 48 MHz, 8 KB of Flash organized as 8192 words, 512 bytes of RAM, a 24 MHz internal bus and a maximum supply voltage of 5.5 V. The listed operating temperature range is -40 °C to +85 °C, making the device suitable for industrial-temperature control equipment. The JS family also provides a full-speed USB 2.0 device controller with an on-chip transceiver.
The 48 MHz CPU provides useful headroom for protocol handling, state-machine control and peripheral servicing compared with slower 8-bit MCUs. Flash-resident firmware supports fast start-up, while the integrated USB transceiver reduces board area by removing the need for a discrete USB PHY. The small 5 mm by 5 mm package supports compact consumer, industrial and communications-oriented boards.
Typical uses include USB-connected data acquisition, HID peripherals, configuration tools, industrial control panels and compact consumer accessories. A system requiring direct USB enumeration can connect the MCU to a USB Type-A or Type-C interface through the appropriate protection, routing and connector implementation.
Designers should confirm the exact 24-pin signal map, supply operating range and peripheral assignments in the manufacturer datasheet before layout. Decoupling, USB impedance routing and firmware timing remain critical. When upgrading, verify USB enumeration behavior, interrupt priorities and any peripheral differences rather than treating a shared package as automatic software compatibility.
ドロップイン代替品: MC9S08JS8CFK — 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。
MC9S08JS16CFK
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MC9S08JS32CFK
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
MC9S08JS8CFK 最大定格＆電気的特性
| Manufacturer | NXP Semiconductors |
| Product Type | 8-bit Microcontroller |
| Processor Core | HCS08 S08 core |
| Processor Series | S08JS |
| データバス幅 | 8 bit |
| Maximum CPU Clock Frequency | 48 MHz |
| Internal Bus Frequency | 24 MHz |
| Flash Memory | 8 KB (8K x 8 words) |
| ROM Program Memory | 8192 words |
| RAM | 512 bytes |
| USB Interface | USB 2.0 full-speed device controller with integrated transceiver |
| Maximum Supply Voltage | 5.5 V |
| 動作温度範囲 | -40 °C to +85 °C |
| パッケージ | 24-HVQFN, 5 mm x 5 mm |
| 実装タイプ | Surface Mount |
| Process Technology | CMOS |
MC9S08JS8CFK 24-hvqfn, 5 mm x 5 mm ピン配置ガイド
MC9S08JS8CFK (24-hvqfn, 5 mm x 5 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: MC9S08JS8CFK.
詳細は データシート をご参照ください。
主な用途
MC9S08JS8CFK の用途: 6 件s: USB HID Control Peripherals, Compact USB Data Acquisition, Industrial Configuration Interface, USB-Connected Consumer Accessories, USB Communication Bridge, Automotive-Style Access Module.
USB HID Control Peripherals
The MC9S08JS8CFK fits USB keyboards, control panels and configuration interfaces because its integrated USB 2.0 full-speed transceiver removes the need for an external PHY. Its 48 MHz HCS08 CPU provides processing margin for debouncing, LED animation and host protocol handling, while 512 bytes of RAM supports compact packet and state-machine buffers. Firmware should remain within the 8 KB Flash limit and should use interrupt-driven USB servicing to avoid latency. Board implementation requires controlled-impedance D+ and D- routing, series-resistor placement consistent with the device recommendations and a compliant USB connector implementation.
おすすめ
Compact USB Data Acquisition
The MC9S08JS8CFK is suitable for compact USB-connected acquisition and monitoring equipment where an 8-bit processor is sufficient for sensor conditioning and digital filtering. Its 48 MHz CPU and 24 MHz internal bus support deterministic interrupt handling, while 512 bytes of RAM limits buffer depth and requires streaming-oriented firmware. The integrated USB full-speed transceiver simplifies the physical interface, but designers should budget USB settling time, calibration storage and protection components. A PCA9554ADBR can expand digital I/O for sensor multiplexing, while the MC9S08JS8CFK handles acquisition control and USB transfer.
おすすめ
Industrial Configuration Interface
The MC9S08JS8CFK works as a USB service interface for industrial equipment that needs local configuration, diagnostics and firmware updating. The -40 °C to +85 °C operating range supports industrial-temperature environments, and the 8-bit architecture is appropriate for menu handling, parameter validation and register-based communication. Its 512 bytes of RAM requires careful allocation among the USB stack, buffers and application state. PCF8575DBR or PCA9554ADBR can add low-speed digital I/O, while a transceiver such as SP485CN-L-TR supports robust wired diagnostic links when the enclosure requires longer-distance communication.
おすすめ
USB-Connected Consumer Accessories
The MC9S08JS8CFK is appropriate for compact USB accessories such as programmable keypads, LED controllers, interface adapters and status indicators. Its small 24-HVQFN 5 mm by 5 mm package preserves PCB area, and the integrated USB transceiver supports direct host connectivity. The 48 MHz CPU can manage indicator effects and USB reports concurrently, although 8 KB of Flash and 512 bytes of RAM favor compact state machines rather than large graphics or complex protocols. Designers should confirm USB current-budget requirements, add appropriate protection, and verify how USB suspend and wake behavior fits the accessory power architecture.
おすすめ
USB Communication Bridge
The MC9S08JS8CFK can serve as a compact bridge between USB and a simple serial interface in equipment with limited protocol complexity. Its USB 2.0 full-speed device controller and integrated transceiver reduce the component count, while the 48 MHz CPU provides enough headroom for framing, checksums and flow control. The 512-byte RAM limit makes buffering and scheduling central design considerations, especially when a peripheral driver generates data faster than the host acknowledges USB packets. An SP3232EEA-L-TR or SP485BN-L-TR can provide the external electrical interface, with protocol timing and isolation selected according to the target environment.
おすすめ
Automotive-Style Access Module
The MC9S08JS8CFK can support compact accessory-control modules that emulate USB-connected vehicle interface accessories, provided the complete design satisfies its own automotive qualification requirements. The -40 °C to +85 °C temperature range and 48 MHz processor support responsive control logic, while the 8 KB Flash footprint suits focused state machines. Automotive implementations require separate attention to transient immunity, load dump, ESD and regulatory qualification, none of which can be inferred from the MCU temperature rating alone. PCA9554ADBR can expand discrete control outputs, and protected serial transceivers can support diagnostic links where required.
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: MC9S08JS8CFK — 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 | MC9S08JS16CFK | MC9S08JS32CFK |
|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 24-HVQFN (5x5) | 24-HVQFN (5x5) - same | 24-HVQFN (5x5) - same |
| Processor Core | 8-bit HCS08 S08 core | 8-bit HCS08 S08 core | 8-bit HCS08 S08 core |
| Maximum CPU Clock Frequency | 48 MHz | 48 MHz | 48 MHz |
| Internal Bus Frequency | 24 MHz | 24 MHz | 24 MHz |
| Flash Memory | 8 KB (8K x 8 words) | 16 KB | 32 KB |
| ROM Program Memory | 8192 words | 16384 words | 32768 words |
| RAM | 512 bytes | 512 bytes | 512 bytes |
| USB Interface | USB 2.0 full-speed device controller with integrated transceiver | USB 2.0 full-speed device controller with integrated transceiver | USB 2.0 full-speed device controller with integrated transceiver |
| Maximum Supply Voltage | 5.5 V | 5.5 V | 5.5 V |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C |
主な差別化要因
- Lower Flash footprint for tightly constrained control firmware （vs MC9S08JS16CFK)
- Integrated USB full-speed physical interface （vs MC9S08JS32CFK)
- Compact 5 mm by 5 mm surface-mount footprint （vs MC9S08JS16CFK)
- Industrial-temperature operating capability （vs MC9S08JS32CFK)
設計ノート
Route the USB D+ and D- pair as a controlled-impedance differential pair, keep the pair length matched, and minimize stubs and test-point discontinuities. Place the required USB series resistors close to the MCU pins and maintain the placement and clearance specified by the manufacturer datasheet. Keep switching regulators, high-current LEDs and clock-producing circuitry away from the USB and crystal areas to limit radiated emissions and susceptibility errors.
Decouple the MCU supply pins with the recommended local ceramic capacitors and place them immediately beside the associated package pins. Include bulk capacitance near the board's power entry point and account for USB-attached load transients when defining the supply budget. The listed 5.5 V value is a maximum, not an operating target; select the supply voltage and tolerance from the manufacturer electrical characteristics.
Do not assume that a device in the same package is firmware-compatible. The MC9S08JS16CFK and MC9S08JS32CFK provide more Flash than the MC9S08JS8CFK, and changes in memory size, interrupt mapping, timers, USB behavior or peripheral assignments can affect the port. Compare the manufacturer pin tables and memory maps, rebuild with the appropriate linker configuration, and perform USB enumeration and peripheral regression tests before substitution.
Treat USB signal integrity and clock integrity as separate design tasks. Keep the oscillator and timing circuitry compact and away from noisy power stages, and follow the recommended ground reference arrangement under the device. Because the MCU has only 512 bytes of RAM, use interrupt-driven transfers and carefully sized buffers; excessive copying can consume RAM and introduce USB packet latency or overrun errors.
コンプライアンス情報
The product records identify the device as a CMOS microcontroller but do not provide explicit RoHS, REACH, lead-free, halogen-free or conflict-minerals declarations. AEC-Q100 qualification is not identified for this part.
