MC9S08SH4MSC - 8-Bit 40MHz S08 MCU, 4KB Flash, 8-SOIC | NXP
MPN： MC9S08SH4MSC ✗ 停產MC9S08SH4MSC 概覽
An S08 microcontroller is an 8-bit microcontroller based on the HCS08 family architecture. These devices combine a compact CPU core, embedded Flash and RAM, timers, serial interfaces, and basic input/output resources in a single integrated circuit. The MC9S08SH4MSC is appropriate when a control system needs deterministic embedded processing without the cost or complexity of a larger 16-bit or 32-bit microcontroller.
Key features include the 40 MHz maximum clock rate, 4 KB Flash memory, 512-byte RAM, 3.3 V and 5 V operation, and an 8-pin SOIC package. The integrated Flash supports firmware storage without an external memory device, while the high-speed serial interface can be used for communication with sensors, actuators, display modules, or external controllers.
The S08SH family is intended for small embedded systems such as appliance controls, simple motor-control boards, keypads, sensor nodes, and industrial interface modules. Its small package helps reduce board area when the application requires only a limited number of I/O connections. The 8-bit architecture and compact memory footprint are also appropriate for straightforward control loops and cost-sensitive production environments.
When designing a board around MC9S08SH4MSC, verify the device pin assignments, oscillator requirements, programming interface, and decoupling recommendations in the manufacturer datasheet. Because the product is listed as end of life by NXP, engineers should confirm supply status and any approved replacement before committing to new production. For current availability, pricing, and lifecycle planning, use the Request a Quote form on this page.
直接替換替代品，適用於 MC9S08SH4MSC — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： MC9S08SH4MSC （相同外形與佔位） — 差異在於 Architecture, Package, Supply Voltage.
此產品無可直接替換的替代品。
申請替代品MC9S08SH4MSC 最大額定值與電氣特性
| Product Type | 8-bit microcontroller |
| Architecture | S08 CISC |
| Maximum Operating Frequency | 40 MHz |
| Flash Memory | 4 KB (4K x 8) |
| RAM | 512 bytes |
| 供應電壓 | 3.3 V to 5 V |
| 封裝 | 8-pin SOIC |
| 安裝類型 | Surface mount |
| Core Family | HCS08 S08 |
| Program Memory Type | Flash |
| High-Speed Serial Interface | Present |
| Power Management | Present |
| 腳位數 | 8 pins |
MC9S08SH4MSC 8-pin soic 腳位配置指南
MC9S08SH4MSC（8-pin soic 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： MC9S08SH4MSC.
請參閱 資料表 以查看完整腳位配置。
典型應用
MC9S08SH4MSC 適用於 6 應用s: Appliance Control Boards, Simple Sensor Nodes, Small Motor and Actuator Controllers, Communication-Assisted Peripherals, Keypad and Human-Interface Modules, Legacy Embedded Product Maintenance.
Appliance Control Boards
The MC9S08SH4MSC suits compact appliance-control boards that coordinate buttons, indicators, relays, or simple sensors. Its 4 KB of on-chip Flash provides enough space for a focused control program when code size is carefully managed, while the 40 MHz S08 core supports responsive state-machine and timing routines. The 8-pin SOIC package reduces board area in space-constrained products. For a new appliance design, check the available I/O count and memory footprint against the control panel, actuator count, and diagnostic requirements before layout begins.
推薦
Simple Sensor Nodes
The MC9S08SH4MSC can act as the controller in a small sensor node that reads a limited number of digital inputs and communicates results through its serial interface. Its 512-byte RAM is sufficient for modest buffering, and 4 KB of Flash can hold a focused acquisition and reporting routine. The 3.3 V to 5 V operating range supports integration with both 3.3 V and 5 V system domains. Designers should budget memory for stack depth, communication buffers, and future diagnostics, since those uses can quickly consume the available RAM and Flash.
推薦
Small Motor and Actuator Controllers
The MC9S08SH4MSC is applicable to small motor, solenoid, or actuator-control modules where deterministic control logic is more important than high computing capacity. The 40 MHz maximum clock can support timed control sequences, while the S08 CISC architecture is straightforward for relay or motor-state firmware. The 8-pin package helps limit PCB area, but pin budgeting is critical because the device provides fewer I/O resources than larger MCUs. Confirm the exact pin functions, timer capabilities, and electrical limits in the manufacturer datasheet before assigning drives or protection circuitry.
推薦
Communication-Assisted Peripherals
The MC9S08SH4MSC is suitable for peripheral modules that need local control plus a high-speed serial connection to a host processor. The integrated serial interface can reduce the need for a separate communication IC, while the S08 core handles command parsing, status reporting, and local I/O. With 4 KB Flash and 512-byte RAM, the firmware should use compact protocols and avoid unnecessary buffering. For protocols requiring larger packet buffers, higher baud-rate support, or multiple peripherals, validate timing and resource margins against the family documentation before finalizing the design.
推薦
Keypad and Human-Interface Modules
The MC9S08SH4MSC can implement a compact keypad, button matrix, status-indicator, or menu controller because it combines an embedded processor with Flash in a small 8-pin SOIC package. A dedicated loop can scan inputs, manage debouncing, update indicators, and expose a status interface to a higher-level controller. The 40 MHz maximum clock provides timing headroom, but software should avoid blocking delays and should account for the limited 512-byte RAM. Validate matrix size, indicator drive requirements, and wake behavior against the exact pin assignment and electrical tables.
推薦
Legacy Embedded Product Maintenance
The MC9S08SH4MSC is primarily relevant to maintenance of an existing product that already uses the S08SH4 architecture, because the part is listed as End of Life and new production risk must be managed. Its 4 KB Flash, 512-byte RAM, 40 MHz clock, and 8-pin SOIC package make it useful for reproducing an established control or communication function. When servicing installed equipment, preserve the original package footprint, clock configuration, programming method, and peripheral mapping. For ongoing supply, request last-time-buy or replacement guidance through the Request a Quote form on this page.
推薦
工程參考資料，適用於 MC9S08SH4MSC — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 |
|---|---|
| Brand | NXP Semiconductors |
| Package | 8-pin SOIC |
| Architecture | 8-bit S08 CISC |
| Maximum Frequency | 40 MHz |
| Flash Memory | 4 KB |
| RAM | 512 bytes |
| Supply Voltage | 3.3 V to 5 V |
| Lifecycle Status | End of Life |
| High-Speed Serial Interface | Present |
| Power Management | Present |
主要差異化特點
- Compact 8-pin SOIC integration (對比MC9S08SH4CSC)
- 40 MHz maximum operating frequency (對比MC9S08SH8MSC)
- Cost-sensitive S08 control platform (對比MC9S08PA4VTG)
設計說明
Design the power rails around the MC9S08SH4MSC's 3.3 V to 5 V operating range. Place the required bypass capacitors close to the device power pins and keep the return path short, especially when the board also contains switching or relay circuitry. Confirm the recommended capacitor values, voltage tolerances, and power-sequencing limits in the manufacturer datasheet before releasing the PCB.
Use the 8-pin SOIC footprint associated with MC9S08SH4MSC and verify pin 1 orientation against the package drawing. Leave programming, clock, reset, and serial-test access reachable during manufacturing. Because the package exposes only eight pins, assign these functions before finalizing the schematic; late changes can create a footprint or routing conflict that cannot be corrected without a board respin.
Do not treat related S08SH4 or S08SH8 ordering codes as automatic drop-in replacements. Compare the exact package suffix, pin numbering, Flash and RAM capacity, clock setup, and lifecycle status. The MC9S08SH4MSC is listed as End of Life, so production planning should include a verified supply strategy and a manufacturer-approved migration path rather than relying only on family-name similarity.
Keep clock, serial-interface, and reset traces short and route them away from noisy switching nodes. Use a stable clock source and follow the recommended decoupling and grounding arrangement in the family datasheet. If the controller drives relays, motors, LEDs, or long cables, separate those paths from sensitive communication traces and validate the complete board for ringing and conducted-noise coupling.
合規資訊
No specific RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status is stated in the product information. Confirm these attributes with the manufacturer before regulated production use.