MC908QB4MDWE - 8-Bit 8MHz 4KB Flash MCU | NXP | SOIC-16
MPN： MC908QB4MDWE ✓ 啟用中MC908QB4MDWE 概覽
A microcontroller is a programmable embedded-control IC that integrates a CPU, memory, and peripheral interfaces on one semiconductor device. In the product hierarchy, this MCU is an embedded microcontroller within the M68HC08 family and uses the CPU08 CISC architecture. This architecture is suited to compact control systems that require deterministic peripheral operation, low pin count, and straightforward firmware-driven state machines.
The verified product information identifies flash program memory, an 8 MHz system clock, and an 8-bit CPU as the principal technical characteristics. The part is also listed in a 16-SOIC package, with industrial operating-temperature information reported by a distributor result. Because the supplied data does not include complete electrical tables, pin names, memory map details, or peripheral specifications, those values are not inferred here.
Typical embedded uses for this device include low-cost industrial controllers, small motor and relay-control systems, instrumentation, and compact consumer equipment. A designer should confirm the exact peripheral set, I/O assignments, clock requirements, and electrical limits against the manufacturer documentation before laying out a PCB.
The main design consideration is package and pinout validation: the MC908QB4MDWE is identified as a 16-SOIC device, so the footprint, programming header, and firmware configuration must match that package exactly. This page combines verified product, distributor, and cross-reference information with explicit data gaps rather than guessing unreported specifications.
直接替換替代品，適用於 MC908QB4MDWE — 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： MC908QB4MDWE （相同外形與佔位） — 差異在於 Package, Operating Temperature, Supply Voltage, Mounting Type, Core Architecture.
MC908QB8CDWE
✅ 直接替換聯絡詢價
查看資料表 →MC908QY4CDWER
✅ 直接替換📋 參考替代品（不在目錄中）
MC908QY4ACDWE
✅ 直接替換聯絡詢價
查看資料表 →MC908AP8CBE
✅ 直接替換聯絡詢價
查看資料表 →MC908JK3ECDWE
✅ 直接替換聯絡詢價
查看資料表 →MC908QB4MDWE 最大額定值與電氣特性
| Product Type | 8-bit microcontroller unit (MCU) |
| Product Family | M68HC08 / HC08Q family |
| Architecture | CISC with Von Neumann architecture |
| CPU | Enhanced M68HC08 CPU08 core |
| Core Width | 8-bit |
| Maximum Clock Speed | 8 MHz |
| Flash Memory | 4 KB |
| Program Memory Organization | 4K x 8 |
| 封裝 | 16-SOIC |
| 安裝類型 | SMD/SMT |
| Supplier Device Package | 16-SOIC |
| Supplier Packaging | Tube |
| 工作溫度 | -40°C to +125°C |
| 供應電壓 | 4.5 V to 5.5 V |
| 生命週期狀態 | Active |
MC908QB4MDWE 16-soic 腳位配置指南
MC908QB4MDWE（16-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： MC908QB4MDWE.
請參閱 資料表 以查看完整腳位配置。
典型應用
MC908QB4MDWE 適用於 6 應用s: Compact Industrial Control, Small Relay and Digital Actuator Control, Low-Cost Instrumentation Controller, Embedded Consumer Appliance, Educational MCU Platform, Simple Data Acquisition Front End.
Compact Industrial Control
The MC908QB4MDWE fits compact embedded-control tasks that need an 8-bit HC08 CPU, 4 KB flash, and an 8 MHz clock. Its 16-SOIC package can support a modest control board with external sensing and actuator interfaces. The verified data does not identify the available timers, GPIO count, communication peripherals, or memory beyond flash, so those functions must be confirmed before final component selection. A successful design would use the CPU08 firmware model to implement sequencing, debounce logic, and state-machine control while keeping the external interface simple.
推薦
Small Relay and Digital Actuator Control
MC908QB4MDWE can serve as the logic controller in a small relay or digital actuator board when the design operates from the verified 4.5 V to 5.5 V supply range and does not exceed the device's unreported current limits. The 8-bit CPU08 architecture and 4 KB flash are appropriate for deterministic control code, but the exact GPIO mapping and drive capability are not included in the supplied data. Use transistor or relay-driver stages outside the MCU where necessary, and verify absolute maximum ratings before connecting inductive loads.
推薦
Low-Cost Instrumentation Controller
The MC908QB4MDWE is a candidate for a compact instrumentation front end that performs local control, calibration bookkeeping, and switch input handling. The 4 KB flash program memory can hold focused firmware, while the 8 MHz CPU supports general embedded logic without requiring a high-performance processor. However, the verified results do not specify ADC, timer, serial, or analog peripherals. Therefore, confirm that the required sensing interface and measurement timing are present in the exact device datasheet before selecting this MCU.
推薦
Embedded Consumer Appliance
MC908QB4MDWE can support a small consumer appliance controller when the product needs embedded programmability, flash-resident firmware, and a relatively low-pin-count package. The 8-bit CISC CPU08 is useful for simple mode control, button handling, timing, and protection sequencing. The available evidence does not establish USB, wireless, display, or advanced communication support, so this application should not assume connectivity beyond the documented MCU resources. Validate standby behavior, supply tolerance, and all peripheral functions using the official datasheet.
推薦
Educational MCU Platform
MC908QB4MDWE is suitable for an educational embedded platform focused on CISC instruction-set learning, GPIO control, and flash-based firmware. Its 4 KB flash and 8 MHz operating rate make it appropriate for small demonstrations and laboratory exercises rather than demanding real-time processing. The 16-SOIC package is convenient for prototyping and socketed or adapter-board construction. Before publishing training material, obtain the complete pinout, clock tree, memory map, and peripheral reference so instructors and students do not rely on incomplete secondary listings.
推薦
Simple Data Acquisition Front End
MC908QB4MDWE may be evaluated for a compact data-acquisition controller when the required sensor outputs can be handled by the device's verified digital resources and the acquisition rate is modest. The 8-bit CPU can coordinate sampling commands, filtering, status reporting, and external data-transfer hardware. The supplied results do not confirm ADC resolution, sampling interfaces, serial protocols, or memory beyond 4 KB flash, so those requirements must be checked directly. A practical design should isolate analog conditioning externally and use the MCU for digital orchestration only after the timing and electrical limits are validated.
推薦
推薦產品摘要
工程參考資料，適用於 MC908QB4MDWE — 比較、設計指引及合規資訊。
選型指南
主要差異化特點
- Verified 4 KB flash target selection (對比MC908QB8CDWE)
- Known 16-SOIC package family candidate (對比MC908QY4CDWER)
- Direct 8 MHz and 4 KB flash identity (對比MC908AP8CBE)
設計說明
Design the board around the verified 16-SOIC footprint and confirm the official land pattern before routing. Do not infer pad dimensions or pin numbering from a marketplace image. Provide programming access, a stable 4.5 V to 5.5 V supply, and local decoupling according to the manufacturer reference design; the supplied data does not specify capacitor values, so those values must come from the datasheet.
The cross-reference results contain related HC08 devices, but a similar package or core does not prove replacement. Before substituting MC908QB8CDWE or another candidate, compare every pin, supply range, flash size, peripheral mapping, clock requirement, reset behavior, and programming algorithm. Firmware built for a different memory map or clock configuration can fail even when the PCB package appears identical.
Keep sensitive signal routing short and isolate external relay, motor, or power-stage switching from the MCU. The verified data confirms an 8 MHz clock and 16-SOIC package but does not provide timing margins or internal oscillator details. Validate oscillator layout, reset behavior, and decoupling using the official datasheet and application guidance before production release.
No verified operating-current or thermal-resistance data is supplied for MC908QB4MDWE, so a numerical power or junction-temperature calculation would be speculative. Estimate only after obtaining the manufacturer electrical table and defining the actual supply voltage, GPIO loading, clock, ambient temperature, and PCB copper area. Include external driver dissipation separately when the MCU controls relays or power devices.
合規資訊
The supplied verified data does not provide authoritative compliance declarations for MC908QB4MDWE.