MPQ6411GS-AEC1-Z - Automotive Windowed Watchdog Timer, AEC-Q100 | MPS
부품 번호: MPQ6411GS-AEC1-Z ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.66 | $16.60 |
| 100 | $1.48 | $148.00 |
| 500 | $1.31 | $655.00 |
| 1,000 | $1.18 | $1,180.00 |
MPQ6411GS-AEC1-Z 개요
What is a Windowed Watchdog Timer? A windowed watchdog timer is a supervisory circuit that requires the host MCU to issue a periodic trigger pulse within a precisely defined upper-bound and lower-bound time window. If the trigger arrives too early, too late, or is missing entirely, the supervisor asserts a reset signal to the MCU. Compared to a simple watchdog (which only checks for missing triggers), a windowed watchdog also catches code-execution faults that would cause premature triggers - making it a cornerstone of ASIL-rated automotive firmware architectures.
Key features include a programmable watchdog timeout window, a fixed reset pulse width, an open-drain RESET output (active low), and an integrated mode selector (MODE pin) that toggles between windowed watchdog and standard watchdog behavior. The device operates across the full automotive -40C to +125C junction temperature range, draws minimal quiescent current (low-uA range) to preserve battery life in always-on subsystems, and provides power-on reset functionality during VCC ramp-up. The 8-pin SOIC (narrow body) footprint simplifies PCB layout and supports hand-rework for prototype builds.
The MPQ6411 uses a precision internal oscillator that defines the watchdog timing window with tight accuracy across temperature, removing the need for an external timing component. Communication with the MCU is via a single bidirectional WDI (watchdog input) pin and the RESET output pin, allowing firmware developers to implement a fail-safe heartbeat with minimal GPIO overhead. The MODE pin provides flexibility for OEMs that prefer a non-windowed standard watchdog in legacy firmware branches.
Typical applications include automotive body control modules, powertrain ECUs, chassis domain controllers, battery management system (BMS) main controllers, and ADAS sensor hubs. It is also used in industrial PLCs and railway signaling controllers where IEC 61508 SIL-rated supervision is required. The combination of AEC-Q100 Grade 1 qualification and a wide operating voltage makes the MPQ6411 a fit for 12V automotive bus systems.
When designing with the MPQ6411, place a 0.1 uF decoupling capacitor as close as possible to the VCC pin and keep the WDI trace short to avoid coupling noise that could be misinterpreted as a spurious trigger. Configure the WDI window in firmware to be at least 2x the worst-case MCU loop execution time to prevent false resets during transient processing peaks.
드롭인 대체품: MPQ6411GS-AEC1-Z — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: MPQ6411GS-AEC1-Z (동일 폼 팩터 및 풋프린트) — 차이점: Function, Operating Temperature Range, Package / Case, Packaging.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
MPQ6411GS-AEC1
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MPQ6411GS-33-AEC1-Z
✅ 드롭인✓ 재고 있음
$0.86 / 개
데이터시트 보기 →MPQ6411GS-33-AEC1
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MPQ6411GS-33-P
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MPQ6411GS-P
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
TPS3823-EP
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MPQ6411GS-AEC1-Z 사양
| 기능 | Windowed Watchdog Timer |
| Number of Supervisors | 1 Channel |
| Reset Output Type | Open Drain / Open Collector (active low) |
| 동작 온도 범위 | -40 C to +125 C (AEC-Q100 Grade 1) |
| Automotive Qualification | AEC-Q100 Qualified |
| 패키지 / 케이스 | 8-SOIC (narrow body, 3.90 mm) |
| 실장 유형 | Surface Mount |
| Packaging | Tape & Reel (Z suffix) |
| Trigger Input | WDI pin (watchdog input from MCU) |
| Mode Pin | Yes (selects windowed vs standard watchdog) |
| Power-On Reset | Yes (during VCC ramp-up) |
| RoHS 상태 | Compliant |
MPQ6411GS-AEC1-Z 핀 구성
| 핀 1 | RESET — Active-low open-drain reset output to MCU |
| 핀 2 | WDI — Watchdog trigger input from MCU |
| 핀 3 | MODE — Windowed vs standard watchdog mode select |
| 핀 4 | GND — Ground reference |
| 핀 5 | NC — Not connected (per datasheet) |
| 핀 6 | NC — Not connected (per datasheet) |
| 핀 7 | VCC — Supply voltage input |
| 핀 8 | MR — Manual reset input (active low) |
일반적인 애플리케이션
MPQ6411GS-AEC1-Z 적합 용도: 6 애플리케이션s: Automotive Body Control Module (BCM), Powertrain ECU (Engine / Transmission Control), Battery Management System (BMS) Main Controller, ADAS Sensor Hub (Radar / Camera Domain Controller), Industrial PLC and Safety Controller, Chassis Domain Controller (Brake / Steering ECU).
Automotive Body Control Module (BCM)
The MPQ6411GS-AEC1-Z fits automotive BCM watchdog applications because its AEC-Q100 Grade 1 qualification and -40 C to +125 C operating range directly meet body-electronics ECU thermal and reliability requirements. The windowed watchdog catches both missing AND premature MCU trigger pulses, providing stronger fault coverage than a simple watchdog - critical for BCM firmware that controls door locks, lighting, and wipers where a software hang could leave systems in an unsafe state. The 8-SOIC narrow-body package simplifies PCB layout in space-constrained BCM housings behind the dashboard.
추천
Powertrain ECU (Engine / Transmission Control)
The MPQ6411GS-AEC1-Z is well-suited for powertrain ECU watchdog supervision because its windowed timing catches firmware runaway conditions that a simple watchdog could miss - essential for engine and transmission controllers where a software fault could cause unintended acceleration or gear-selection errors. The AEC-Q100 Grade 1 qualification supports under-hood thermal environments, and the open-drain RESET output allows wired-OR connection with other supervisory signals in the ECU's safety chain. The 8-SOIC package handles the mechanical vibration profile of under-hood mounting.
추천
Battery Management System (BMS) Main Controller
The MPQ6411GS-AEC1-Z suits BMS main controller applications because its windowed watchdog prevents firmware from issuing spurious cell-balancing commands that could overcharge lithium-ion cells - a critical safety function in EV battery packs. The AEC-Q100 qualification and wide operating temperature range accommodate underbody or battery-pack mounting positions that see -40 C cold-start and high ambient heat. The low quiescent current minimizes parasitic drain on the high-voltage battery when the vehicle is parked for weeks at a time.
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ADAS Sensor Hub (Radar / Camera Domain Controller)
The MPQ6411GS-AEC1-Z is ideal for ADAS sensor hub watchdog supervision because its windowed detection provides the firmware-integrity assurance required for ASIL-B rated sensor fusion. A premature trigger from a corrupted radar processing loop is detected before safety-critical ADAS decisions are made, preventing false braking or steering interventions. The 8-SOIC package and tape-and-reel (Z suffix) packaging support the high-volume automated assembly lines typical of Tier 1 ADAS supplier production.
추천
Industrial PLC and Safety Controller
The MPQ6411GS-AEC1-Z serves industrial PLC watchdog applications because its windowed watchdog meets IEC 61508 SIL-2 firmware supervision requirements for process automation and safety instrumented systems. The wide operating temperature range supports factory-floor cabinet environments with elevated ambient temperatures, and the AEC-Q100 qualification provides headroom for harsh industrial installations. The 8-SOIC package is compatible with hand-soldering for prototype PLC designs and supports the wave-solder reflow profiles used in industrial PCB assembly.
추천
Chassis Domain Controller (Brake / Steering ECU)
The MPQ6411GS-AEC1-Z fits chassis domain controller watchdog supervision because its windowed timing catches firmware faults that could cause unintended braking or steering actuation - a primary safety concern in brake-by-wire and steer-by-wire systems. The AEC-Q100 Grade 1 qualification and open-drain RESET output support the fail-safe architecture required by ISO 26262 ASIL-D chassis systems. The 8-SOIC package with tape-and-reel (Z) packaging supports high-volume automotive production schedules for Tier 1 chassis suppliers.
추천
추천 제품 요약
엔지니어링 참조 데이터: MPQ6411GS-AEC1-Z — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | MPQ6411GS-AEC1 | MPQ6411GS-33-AEC1-Z | MPQ6411GS-33-AEC1 | MPQ6411GS-33-P | MPQ6411GS-P | TPS3823-EP |
|---|---|---|---|---|---|---|---|
| Package | 8-SOIC (narrow body) | 8-SOIC (narrow body) - same | 8-SOIC (narrow body) - same | 8-SOIC (narrow body) - same | 8-SOIC (narrow body) - same | 8-SOIC (narrow body) - same | 8-SOIC (narrow body) - same |
| Brand | Monolithic Power Systems (MPS) | Monolithic Power Systems (MPS) | Monolithic Power Systems (MPS) | Monolithic Power Systems (MPS) | Monolithic Power Systems (MPS) | Monolithic Power Systems (MPS) | Texas Instruments |
| Watchdog Type | Windowed | Windowed | Windowed | Windowed | Windowed | Windowed | Simple (non-windowed) |
| Automotive Grade | AEC-Q100 Grade 1 | AEC-Q100 Grade 1 | AEC-Q100 Grade 1 | AEC-Q100 Grade 1 | Industrial (no AEC-Q100) | Industrial (no AEC-Q100) | AEC-Q100 |
| VCC Variant | Standard | Standard | Fixed 3.3V | Fixed 3.3V | Fixed 3.3V | Standard | Multiple fixed thresholds |
| Packaging | Tape & Reel (Z) | Tube | Tape & Reel (Z) | Tube | Tube (P) | Tube (P) | Tape & Reel |
| Reset Output | Open Drain (active low) | Open Drain (active low) | Open Drain (active low) | Open Drain (active low) | Open Drain or Open Collector | Open Drain or Open Collector | Push-Pull / Open Drain options |
| Channel Count | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
주요 차별점
- Windowed watchdog detection vs simple watchdog (vs TPS3823-EP)
- Fixed 3.3V variant for tighter VCC threshold accuracy (vs MPQ6411GS-AEC1 (standard variant))
- Tape-and-reel packaging for high-volume automotive assembly (vs MPQ6411GS-AEC1 (tube packaging))
설계 노트
Place a 0.1 uF decoupling capacitor as close as possible to the VCC pin (pin 7) and a bulk capacitor on the same supply trace. Keep the WDI (watchdog input) trace short and routed away from switching noise sources such as MCU clock lines or DC-DC converter switching nodes - the WDI pin is sensitive to noise that can be misinterpreted as a spurious trigger, causing unintended resets. Use a ground pour under and around the IC to provide low-impedance return paths.
Configure the WDI trigger window in firmware to be at least 2x the worst-case MCU loop execution time. If the window is too tight, transient processing peaks (e.g., interrupt storms, RTOS context switches) will trigger false resets. Verify the MODE pin logic level matches your firmware expectation - high selects windowed watchdog, low selects standard watchdog. Do not leave MODE floating as it may oscillate and select neither mode reliably.
The open-drain RESET output requires an external pull-up resistor (typically 10 kOhm to VCC) for proper logic-high signaling. If multiple supervisory outputs are wired-OR'd together (e.g., MPQ6411 RESET + voltage supervisor RESET + manual reset), ensure each open-drain output can sink the combined pull-up current without exceeding its rated sink capability. Add a series resistor (100 Ohm) on the RESET line near the MPQ6411 to dampen ringing if the trace is long.
규정 준수 정보
AEC-Q100 Grade 1 qualified per MPS datasheet. RoHS and REACH compliant per MPS product page. Halogen-free per MPS environmental compliance statement. Z suffix denotes automotive-grade tape-and-reel packaging.
