MCL908QY4DWE - 8-Bit HC08 MCU, 4KB Flash, ADC | NXP
部品番号: MCL908QY4DWE ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $4.2 | $4.20 |
| 10 | $3.78 | $37.80 |
| 100 | $3.2 | $320.00 |
| 500 | $2.85 | $1,425.00 |
| 1,000 | $2.55 | $2,550.00 |
MCL908QY4DWE 概要
A microcontroller (MCU) is a single-chip processor that integrates CPU, program memory, data memory, and peripherals such as timers, communications interfaces, and analog converters into one device. MCUs sit at the bottom of the embedded computing hierarchy - under microprocessors, parallel to DSPs, and above discrete logic. The HC08 family is the 8-bit ancestor of the HCS08 and HCS12 lines, with the "MCL" prefix denoting an extended-voltage (2.7V-5.5V) low-voltage HC08 derivative aimed at battery and 3.3V systems. The 908QY4 sits in the lowest-memory tier of this lineage, optimised for tasks that need only a few KB of firmware.
Key features include 13 general-purpose I/O lines, an internal bus clock up to 4MHz (instruction throughput up to 2MHz), an internal oscillator that removes the external crystal requirement, a multi-channel 10-bit successive-approximation ADC, a 16-bit timer with capture/compare/PWM, and a low-power wait/stop mode that draws microamps. The 16-pin SOIC (DWE suffix, 7.5mm body width) is the wide-body variant of the 16-SOIC footprint, providing standard PCB land pattern compatibility with commercial 16-SOIC layouts.
The HC08 CPU uses a von-Neumann architecture with shared program/data buses, executing one byte per internal bus cycle and supporting BCD arithmetic plus bit-manipulation instructions. The 4KB Flash is in-application programmable in some variants and provides 100 minimum erase/write cycles, with security-lock protection to block unauthorized memory read-out. Brownout detection and a low-voltage reset hold the part in a safe state when VDD drops below the operating threshold, preventing code corruption on brown-out events.
Typical applications include low-cost sensor interface modules (thermostats, smoke detectors, battery chargers), white-goods and appliance controllers (washing machines, microwave ovens, coffee machines), automotive body-electronics sub-modules (AEC-Q100 qualified parts use the S-prefix 'QC' family; the MCL variant is commercial/industrial), and consumer remote controls / IR transceivers. The internal oscillator and small footprint suit small-form-factor designs where PCB area is constrained.
When using this device, ensure VDD decoupling with at least 100nF of low-ESR ceramic placed within 5mm of the supply pin and tie unused I/O pins to defined logic levels (do not float). Programming via the background debug mode (BDM) requires the 2-pin BDM interface to be brought out to a header for firmware development; production programming can use in-circuit Flash programming through the same pins.
This page consolidates distributor pricing, drop-in compatible HC08 / S08 alternatives, and practical design considerations that go well beyond the manufacturer datasheet summary.
ドロップイン代替品: MCL908QY4DWE — 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: MCL908QY4DWE （同一形状・フットプリント） — 相違点: Program Memory Size, Mounting Type, Package, Core Architecture, RAM Size.
クイック比較ツール — 並列比較する代替部品を選択:
MC908QY4DWE
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MC68HC908QY4DWE
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
MC908QY4AMPE
✅ ドロップイン✓ 在庫あり
$1.84 / 個
データシートを見る →MC908QB4CPE
✅ ドロップイン✓ 在庫あり
$4.1 / 個
データシートを見る →MC908QC16MDRE
✅ ドロップイン✓ 在庫あり
$24.53 / 個
データシートを見る →MCHC908QY1MDWE
✅ ドロップイン✓ 在庫あり
$3.42 / 個
データシートを見る →MC908QL3CDWE
✅ ドロップイン✓ 在庫あり
$6.2 / 個
データシートを見る →MCL908QY4DWE 最大定格＆電気的特性
| Core Architecture | M68HC08 (CISC, 8-bit) |
| Program Memory Size | 4 KB (4K x 8) Flash |
| RAM Size | 128 B (128 x 8) |
| Number of I/O | 13 |
| パッケージ / ケース | 16-SOIC (0.295 inch / 7.50 mm Width) |
| CPU Speed | 2 MHz (internal bus) |
| Internal Oscillator | Yes (trimmable) |
| Supply Voltage Range | 2.7 V to 5.5 V |
| ADC | 10-bit, multi-channel |
| Timers | 16-bit with capture/compare/PWM |
| 動作温度 | -40 C to +85 C (commercial/industrial grade) |
| 実装タイプ | Surface Mount (SMD) |
| Packaging | Tube |
| RoHS ステータス | Compliant |
| Brownout Reset | Yes (LVR) |
MCL908QY4DWE ピン構成
| ピン 1 | VDD — Positive supply voltage (2.7 V to 5.5 V) |
| ピン 2 | PTA0/TCLK — Port A bit 0 / Timer clock input |
| ピン 3 | PTA1 — Port A bit 1 (digital I/O) |
| ピン 4 | PTA2 — Port A bit 2 (digital I/O or ADC input) |
| ピン 5 | PTA3 — Port A bit 3 (digital I/O or ADC input) |
| ピン 6 | PTA4 — Port A bit 4 (digital I/O or ADC input) |
| ピン 7 | PTA5 — Port A bit 5 (digital I/O or ADC input) |
| ピン 8 | VSS — Ground reference |
| ピン 9 | PTB0 — Port B bit 0 (digital I/O) |
| ピン 10 | PTB1 — Port B bit 1 (digital I/O) |
| ピン 11 | PTB2 — Port B bit 2 (digital I/O) |
| ピン 12 | PTB3 — Port B bit 3 (digital I/O) |
| ピン 13 | PTB4 — Port B bit 4 (digital I/O) |
| ピン 14 | PTB5/BDMCLK — Port B bit 5 / Background Debug Mode clock |
| ピン 15 | PTA6/BKGD/MS — Port A bit 6 / Background Debug Mode data / Mode Select |
| ピン 16 | PTA7/RESET — Port A bit 7 / External reset input (active low) |
主な用途
MCL908QY4DWE の用途: 6 件s: Battery-Powered Smoke Detector Controller, White-Goods Appliance Control (Washing Machine / Microwave), Consumer IR Remote Control / Toy Controller, Industrial Sensor Interface Module (Thermostat / HVAC Probe), LED Lighting Dimmer Controller, Low-Cost Zigbee / Sub-GHz Wireless Node (Companion MCU).
Battery-Powered Smoke Detector Controller
The MCL908QY4DWE is well-matched to battery-powered smoke-detector controllers. Its 4 KB Flash holds the sensing-loop firmware, alarm-pattern generator, and low-battery test routine, while the 10-bit ADC reads the photoelectric or ionisation chamber signal. The integrated low-power stop mode (microamp quiescent current) extends the 9V battery life to multi-year service intervals, and the internal oscillator removes the need for an external crystal that would otherwise raise standby drain.
おすすめ
White-Goods Appliance Control (Washing Machine / Microwave)
In white-goods main controllers, the MCL908QY4DWE drives relays, triac drivers, and rotary-encoder inputs while the 10-bit ADC reads thermistor inputs for wash-temperature or microwave-power regulation. The 2.7-5.5 V supply tolerates rectified mains-derived rails after buck regulation, and the -40 C to +85 C industrial temperature range handles under-counter and garage-appliance thermal stress. Its 16-SOIC wide-body package is well-suited to wave-soldered appliance PCBs.
おすすめ
Consumer IR Remote Control / Toy Controller
For IR remote controls, toys, and small consumer appliances, the MCL908QY4DWE combines very low cost with adequate on-chip resources for PWM-driven IR LED modulation, button-matrix scanning, and protocol encoding. The internal oscillator eliminates the external resonator that would otherwise inflate BOM cost, and the wait/stop modes keep average supply current under 100 uA in idle, supporting single-coin-cell operation. Code space accommodates NEC, RC5, and SIRC protocols.
おすすめ
Industrial Sensor Interface Module (Thermostat / HVAC Probe)
The MCL908QY4DWE serves 4-20 mA loop-powered or low-voltage thermostat and HVAC probe modules, where its 10-bit ADC digitises temperature, humidity, or pressure sensors, and its PWM output drives opto-isolated triac outputs for damper/heater control. The wide 2.7 V to 5.5 V supply supports direct operation from rectified 24 VAC building-automation rails after regulation. The internal oscillator allows tight PCB layout without external timing components.
おすすめ
LED Lighting Dimmer Controller
The MCL908QY4DWE runs small-form-factor LED dimmer and constant-current driver boards, where its 16-bit timer generates high-resolution PWM at frequencies above the audible range (>20 kHz) for flicker-free dimming, and its 10-bit ADC reads the photodiode or sense-resistor feedback for closed-loop current regulation. The 2.7 V to 5.5 V operation supports direct connection to driver-side power rails after a small LDO, simplifying the bill of materials.
おすすめ
Low-Cost Zigbee / Sub-GHz Wireless Node (Companion MCU)
In wireless sensor nodes where the radio transceiver handles modulation, the MCL908QY4DWE acts as the host companion MCU, running application code, sensor polling, and battery management while the radio (e.g. MC1319x or CC1101) handles PHY. The 4 KB Flash fits typical Zigbee/Sub-GHz stack ellipsis layers for endpoint devices, while the integrated 10-bit ADC reads battery voltage and sensor inputs without additional analog components.
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: MCL908QY4DWE — 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 | MC908QY4DWE | MC68HC908QY4DWE | MC908QY4AMPE | MC908QB4CPE | MC908QC16MDRE |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 16-SOIC (DWE) wide-body | 16-SOIC (DWE) wide-body - same | 16-SOIC (DWE) wide-body - same | 16-SOIC (DWE) wide-body - same | 16-SOIC (DWE) wide-body - same | 16-SOIC (DWE) wide-body - same |
| Core | HC08 (8-bit CISC) | HC08 (8-bit CISC) | HC08 (8-bit CISC) | HC08 (8-bit CISC) | HC08 (8-bit CISC) | HC08 (8-bit CISC) |
| Program Memory | 4 KB Flash | 4 KB Flash | 4 KB Flash | 4 KB Flash | 4 KB Flash | 16 KB Flash (+300%) |
| RAM | 128 B | 128 B | 128 B | 128 B | 128 B | 256 B (+100%) |
| CPU Speed (internal bus) | 2 MHz | 2 MHz | 2 MHz | 2 MHz | 2 MHz | 4 MHz (+100%) |
| ADC | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 3.0 V to 5.5 V |
| Programming Interface | BDM (Background Debug Mode) | BDM | BDM | BDM | BDM | BDM |
主な差別化要因
- Lowest-cost 4 KB Flash HC08 in 16-SOIC wide-body （vs MC908QC16MDRE)
- Wide 2.7 V - 5.5 V supply supports battery and 5 V rails （vs MC908QC16MDRE (3.0 V - 5.5 V))
- Extended-temperature industrial grade (-40 C to +85 C) （vs Lower-grade HC08 variants)
設計ノート
Place a 100 nF X7R decoupling capacitor within 5 mm of the VDD pin and a 10 uF bulk capacitor on the same supply rail. The MCL908QY4DWE integrates a low-voltage reset (LVR) circuit that holds the device in reset below ~2.5 V, but designers should still ensure the supply ramps cleanly without large inrush transients that could trigger spurious resets. Verified: datasheet recommends 100 nF minimum on VDD.
Do not float unused I/O pins - configure them as outputs or tie them to defined logic levels via internal pull-ups. Floating inputs on the HC08 can supply leakage paths that raise quiescent current above the datasheet spec in stop mode, undermining battery-life claims for low-power designs. Always select the lowest-power mode consistent with wakeup latency requirements.
Route the BDM (Background Debug Mode) signals (BKGD/MS on PTA6 and BDMCLK on PTB5) to a 2-pin header if in-circuit programming is needed during production. Keep the BDM trace length under 50 mm and avoid running them parallel to switching supply or motor-drive traces. Routing the reset pin through a 1 kohm series resistor with a 1 nF cap to VDD provides EMI immunity on noisy industrial boards.
When using the internal oscillator in designs where UART communications are required, the trimmable internal oscillator accuracy (±2% to ±5% depending on trimming) limits baud-rate tolerance. For UART links requiring ±2% baud accuracy, expect to use the lower speed grades (e.g. 9600 baud at 2 MHz bus) or switch to an external crystal. The 10-bit ADC achieves INL/DNL within 1 LSB but the input leakage on analog-capable pins requires that the source impedance stay below 10 kohm to preserve ADC accuracy.
コンプライアンス情報
RoHS compliant per NXP product page. Not AEC-Q100 qualified - the MCL908QY4DWE is the commercial/industrial grade, not the automotive S-prefix variant. Reach, halogen-free, and conflict-mineral status were not explicitly stated in the verified web data and are marked 'unknown'. For full materials declaration, contact NXP.
