MC908QB8CDWE - 8-Bit 8MHz MCU with 8KB Flash | NXP
部品番号: MC908QB8CDWE ✗ 生産終了| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
MC908QB8CDWE 概要
A microcontroller is a compact embedded-control device integrating a processor core, program memory, data memory, I/O, timers, and communication peripherals on one semiconductor die. The MC908QB8CDWE provides a low-cost, low-complexity platform for cost-sensitive automotive and industrial products where an 8-bit control engine is sufficient. Its 8KB flash stores firmware, while 192 bytes RAM supports working variables and stack operations.
The verified product information identifies an enhanced M68HC08 CPU core, 8-bit data width, 8MHz maximum clock frequency, and 8KB flash organized as 8K x 8. The 16 I/O lines provide interfaces for sensors, switches, indicators, actuators, and control logic. The device operates from 3.3V/5V according to the distributor datasheet listing, supporting both legacy 5V and lower-voltage industrial or embedded designs.
The HC08QB family is positioned for compact embedded controllers, particularly applications requiring economical flash programmability and broad I/O availability. Because this MCU is an 8-bit CISC device rather than a high-performance digital signal processor, its strength is deterministic control and simple peripheral integration, not intensive computation or high-bandwidth data processing. Firmware architecture, interrupt handling, and memory-efficient code design are therefore important.
Typical uses include automotive accessory controllers, industrial sequence controllers, motor or relay logic, sensor interfaces, and compact embedded control modules. The 16-pin SOIC package is also straightforward for through-hole assembly and prototype construction. Designers should verify pin multiplexing, timing, electrical limits, and peripheral availability against the manufacturer datasheet before committing a new design, because the supplied search results do not include every register or pin-level parameter.
This product page consolidates verified manufacturer and distributor information, lifecycle status, package data, and cross-reference findings. The manufacturer page identifies the device as end of life, so new production should be confirmed before use. Existing designs should verify stock, sourcing, and approved lifecycle-transition options rather than assuming a drop-in replacement is electrically identical.
ドロップイン代替品: MC908QB8CDWE — 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。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: MC908QB8CDWE （同一形状・フットプリント） — 相違点: Package, Architecture, Core, Program Memory Size, Mounting Type.
クイック比較ツール — 並列比較する代替部品を選択:
MC908QB8VDWE
✅ ドロップイン✓ 在庫あり
$3.95 / 個
データシートを見る →MC908QB8MDWE
✅ ドロップイン✓ 在庫あり
$3.65 / 個
データシートを見る →MC908QB8CDWER
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MC908QY8CDWE
✅ ドロップイン✓ 在庫あり
$2.1 / 個
データシートを見る →MC908QY8VDWE
✅ ドロップイン✓ 在庫あり
価格はお問い合わせください
データシートを見る →MC908QB8CDWE 最大定格＆電気的特性
| Product Type | 8-bit microcontroller |
| Core | HC08 enhanced M68HC08 CPU |
| 最大クロック周波数 | 8 MHz |
| データバス幅 | 8 bit |
| Flash Memory | 8 KB (8K x 8) |
| RAM | 192 bytes |
| I/O Lines | 16 |
| 電源電圧 | 3.3V/5V |
| Architecture | CISC with Von Neumann architecture |
| パッケージ | 16-pin SOIC |
| 実装タイプ | Surface mount |
| Family | HC08Q / M68HC08 |
| Processor Series | HC08QB |
MC908QB8CDWE 16-pin soic ピン配置ガイド
MC908QB8CDWE (16-pin soic 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: MC908QB8CDWE.
詳細は データシート をご参照ください。
主な用途
MC908QB8CDWE の用途: 6 件s: Automotive Accessory Control, Industrial Sequence Controller, Relay and Actuator Interface, Sensor Signal Conditioning, Compact Appliance Controller, Legacy Embedded System Maintenance.
Automotive Accessory Control
MC908QB8CDWE fits simple automotive accessory-control logic where an 8MHz 8-bit processor, 8KB flash, 192 bytes RAM, and 16 I/O lines are sufficient for switch scanning, relay sequencing, or actuator supervision. Its 3.3V/5V listing supports legacy and mixed-voltage design investigation, while the CISC HC08 core favors straightforward control code. The tradeoff is the verified end-of-life status: qualification, temperature range, electrical thresholds, and supply continuity must be approved before production use.
おすすめ
Industrial Sequence Controller
The MC908QB8CDWE is suitable for a compact sequence controller because its 16 I/O lines can support discrete inputs and outputs, while 8KB flash provides space for deterministic firmware and 192 bytes RAM supports control variables. The 8MHz HC08 CPU is appropriate for relay, lamp, pump, or interlock sequencing rather than high-bandwidth processing. Before deployment, confirm I/O voltage thresholds, output-drive limits, watchdog requirements, and environmental specifications, which are not fully present in the verified search data.
おすすめ
Relay and Actuator Interface
Use MC908QB8CDWE as the control brain for a relay or actuator interface when the system needs deterministic event handling and moderate I/O density rather than high computational throughput. Sixteen I/O lines can represent sensor inputs, status LEDs, and driver-enable signals, while the 8MHz CISC core supports straightforward state-machine firmware. Designers must add suitable driver transistors, protection networks, and flyback paths, then verify the device’s absolute maximum and output-current limits from the manufacturer datasheet.
おすすめ
Sensor Signal Conditioning
MC908QB8CDWE can supervise simple sensor inputs in a compact embedded module because its 16 I/O lines provide multiple digital connections and its 8MHz processor can execute calibration, filtering, thresholding, and status logic. The part is not presented in the verified data as a high-resolution analog converter, so analog front-end components remain necessary. Firmware should preserve memory headroom within 8KB flash and 192 bytes RAM, while hardware validation must confirm input thresholds, noise immunity, and any analog-interface requirements.
おすすめ
Compact Appliance Controller
The MC908QB8CDWE is a practical candidate for compact appliance and equipment controllers that use discrete sensors, LEDs, switches, relays, and small state machines. Its 8KB flash and 192 bytes RAM are adequate for modest firmware when code is kept compact, and the 8MHz clock provides ample control-loop headroom for non-real-time tasks. The engineering tradeoffs are limited memory, limited verified peripheral detail, and end-of-life availability, so firmware architecture and obsolescence planning should be addressed before a new platform is released.
おすすめ
Legacy Embedded System Maintenance
MC908QB8CDWE is most defensible for maintenance of an existing design whose firmware, schematic, and qualification history already match this exact part. The verified combination of 8MHz operation, 8KB flash, 192 bytes RAM, 16 I/O lines, and 16-SOIC packaging allows engineers to preserve an established architecture without changing the footprint or memory assumptions. For migration, compare the complete datasheet, pin assignments, timing, electrical limits, and lifecycle status; the supplied search results do not prove that any listed related part is a guaranteed drop-in replacement.
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: MC908QB8CDWE — 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 | MC908QB8VDWE | MC908QB8MDWE | MC908QB8CDWER | MC908QY8CDWE | MC908QY8VDWE |
|---|---|---|---|---|---|---|
| Package | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core | HC08 / M68HC08 | HC08 / M68HC08 | HC08Q family; detailed verification required | HC08Q family; detailed verification required | HC08Q family; detailed verification required | HC08Q family; detailed verification required |
主な差別化要因
- Exact identified resource set for legacy control designs （vs MC908QB8VDWE)
- Documented end-of-life visibility （vs Newer NXP MCU families)
- Compact 16-I/O control interface （vs MC908QY8CDWE)
- 3.3V/5V listing for mixed-voltage investigation （vs MC908QB8MDWE)
設計ノート
Do not treat a related HC08Q MPN as a drop-in replacement without checking the manufacturer pinout and electrical tables. The verified search results establish MC908QB8CDWE as an 8MHz, 8KB-flash, 16-I/O, 16-SOIC device, but they do not provide complete alternative specifications. Review reset, oscillator, supply, I/O, programming, and timing pins before approving any substitution.
The verified listing identifies 3.3V/5V operation, but the permitted input range and I/O thresholds are not included in the supplied data. Confirm supply tolerance, decoupling requirements, output-drive capability, and maximum pin currents from the manufacturer datasheet. For a 3.3V design, calculate external signal levels against the confirmed input thresholds rather than assuming every 5V-tolerant peripheral interface is compatible.
The MC908QB8CDWE is identified as a 16-pin SOIC device, so preserve the existing land pattern and pin-1 orientation during maintenance layouts. Verify that exposed leads, pad dimensions, solder mask, and assembly clearance match the selected SOIC footprint. If a replacement uses a different package suffix or tape orientation, treat it as a board-level change rather than a software-only migration.
The supplied verified data does not provide the operating-temperature range, thermal resistance, or maximum power dissipation, so no reliable junction-temperature calculation can be made. In legacy equipment, measure worst-case supply current and ambient temperature during operation, then verify the result against the manufacturer’s absolute maximum ratings and the system enclosure temperature. Treat any thermal estimate as [DATA_NEEDED] until those inputs are available.
コンプライアンス情報
The supplied distributor search result does not establish RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. Obtain current compliance documentation from NXP or the authorized distributor before release.
