MC908MR32VFUE - 8-bit HC08 MCU 32KB Flash 8MHz | NXP
Teilenummer: MC908MR32VFUE ✗ Abgekündigt| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $20.17 | $20,17 |
| 10 | $19.15 | $191,50 |
| 100 | $17.55 | $1.755,00 |
| 500 | $16.12 | $8.060,00 |
| 1.000 | $14.95 | $14.950,00 |
MC908MR32VFUE Übersicht
An 8-bit microcontroller is a single-chip computing device whose CPU processes data in 8-bit words, sitting within the broader hierarchy of MCU families: HC08 core -> M68HC08 family -> NXP/Freescale 8-bit MCUs -> embedded processing semiconductors. MCUs combine processor, memory, and peripherals on one die, making them the backbone of cost-sensitive embedded control systems where a 32-bit processor would be over-engineered.
Key features include the high-performance M68HC08 (CPU08) CISC architecture with fully static low-power design, up to 32 KB of in-system-programmable FLASH memory, an on-chip analog-to-digital converter, and up to 8.2 MHz internal bus speed. The device also provides a master reset pin, power-on reset (POR), low-voltage detection (LVD), stop and wait low-power modes, and break module (BRK) support for in-circuit debugging with a single breakpoint.
Technically, the HC08MR family is a member of the low-cost, high-performance M68HC08 Family based on the customer-specific integrated circuit (CSIC) design strategy. All family members use the enhanced CPU08 core and differ in memory size and peripheral mix. The FLASH-based program memory allows field reprogramming, a significant advantage over earlier one-time-programmable ROM or EEPROM-based HC08 variants, reducing update cost across a product lifecycle.
Typical applications include motor control and inverter drives (the MR family targets motor control directly), appliance and white-goods control boards, industrial sensing and actuation nodes, and automotive body-electronics submodules rated for 5 V operation. The rich PWM capability and ADC make it a strong fit for PWM-driven power stages.
When designing with this device, note it is officially End of Life per NXP product information: budget for last-time-buy inventory and evaluate the HC08 family replacement path early. Verify the 5 V supply rail compatibility before considering modern 3.3 V MCUs as successors.
This page synthesizes distributor pricing, verified lifecycle status, drop-in family alternatives, and practical design guidance not consolidated on the manufacturer datasheet alone.
Drop-in-Alternativen für MC908MR32VFUE – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit MC908MR32VFUE (gleiche Bauform und Footprint) – abweichend in RAM Size, Program Memory Size, Peripherals, ADC, Supply Voltage.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
MC68HC908MR32CFU
✅ Drop-In✓ Auf Lager
$9.4 / Stück
Datenblatt ansehen →MC908MR32CFUE
✅ Drop-In✓ Auf Lager
$7.15 / Stück
Datenblatt ansehen →MC908MR16CFUE
✅ Drop-In✓ Auf Lager
$4.48 / Stück
Datenblatt ansehen →MC68HC908MR16CFU
✅ Drop-In✓ Auf Lager
$4.45 / Stück
Datenblatt ansehen →MC908GZ32VFUE
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$5.15 / Stück
Datenblatt ansehen →MC908LK24CFUE
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
MC908MR32VFUE Grenzwerte & elektrische Eigenschaften
| Core Processor | HC08 (CPU08) |
| Core Size | 8-Bit |
| Architecture | CISC (M68HC08) |
| Maximum Clock Speed | 8 MHz |
| Internal Bus Frequency | Up to 8.2 MHz |
| Program Memory Size | 32KB (32K x 8) |
| Program Memory Type | FLASH |
| RAM Size | 768 x 8 |
| EEPROM Size | - |
| Number of I/O | 44 |
| Connectivity | SCI, SPI |
| Peripherals | LVD, POR, PWM |
| ADC | On-chip Analog to Digital Converter |
| Versorgungsspannung | 5 V |
| Gehäuse / Bauform | 64-QFP (14 x 14 mm) |
| Montageart | Surface Mount |
| Packaging | Tray |
| Part Status | End of Life (Not For New Designs) |
| Low Power Modes | Wait, Stop |
| Debug Support | Break module (BRK), single breakpoint, in-circuit simulation |
| Reset Features | Master reset pin (RST), Power-on Reset (POR) |
MC908MR32VFUE 64-qfp (14 x 14 mm) Pinbelegungsleitfaden
Pinbelegung für MC908MR32VFUE (64-qfp (14 x 14 mm)-Gehäuse). Dieser digitale IC umfasst GPIO, Kommunikationsschnittstellen (UART, SPI, I2C) und Versorgungspins. Alternative Pin-Funktionen und Konfigurationsoptionen entnehmen Sie dem Herstellerdatenblatt. Unverzichtbar für Embedded-System-Design und PCB-Layout.
Keine detaillierten Pinbelegungsdaten verfügbar für MC908MR32VFUE.
Siehe die Datenblatt für die vollständige Pin-Konfiguration.
Typische Anwendungen
MC908MR32VFUE ist geeignet für 6 Anwendungs: Motor Control and Inverter Drives, Appliance and White-Goods Control, Industrial Sensing and Actuation Nodes, Automotive Body Electronics Submodules, Power Supply and Battery Charger Supervision, Legacy Board Service and Repair.
Motor Control and Inverter Drives
The HC08MR family was architected specifically for motor control, and the MC908MR32VFUE reflects this with dedicated PWM outputs, an on-chip ADC for current and voltage feedback, and a 5 V I/O system that interfaces cleanly with gate drivers and optocouplers. At up to 8.2 MHz internal bus speed, it executes closed-loop scalar control for brushed DC, stepper, and low-end three-phase motors. Its 32KB FLASH permits field firmware updates to tune control parameters after deployment. The 44 I/O pins accommodate protection inputs, fault latching, and host communication over SCI or SPI. For drives that exceed 8-bit computational headroom, the same firmware structure can be ported to NXP's 32-bit families.
Empfohlen
Appliance and White-Goods Control
Washing machines, dishwashers, and small kitchen appliances need a low-cost controller combining PWM-driven motor speed control, ADC-based user-interface sensing, and robust 5 V noise immunity. The MC908MR32VFUE fits this profile with its integrated PWM, on-chip ADC, LVD, and POR for reliable power-cycle behavior in mains-derived supplies. The 32KB FLASH supports larger firmware images implementing multiple wash cycles, fault diagnostics, and serial links to display boards via SCI. Fully static low-power design with wait and stop modes helps meet standby power targets. Because the part is EOL, appliance manufacturers typically pair last-time-buy inventory with a planned migration to active NXP MC9S08 devices.
Empfohlen
Industrial Sensing and Actuation Nodes
Distributed industrial I/O modules benefit from the MC908MR32VFUE's combination of 44 general-purpose I/O pins, SPI for external ADC or DAC expansion, and SCI for RS-485-style host links through an external transceiver. The on-chip ADC digitizes sensor inputs such as pressure, temperature, and position feedback, while PWM outputs drive actuators, valves, or indicator dimming. LVD and POR ensure deterministic startup in electrically noisy factory environments, and the break module supports in-circuit diagnostics during commissioning. Its 5 V tolerance simplifies interfacing with legacy industrial sensors still operating at 5 V logic levels, avoiding level-shifting circuitry required by 3.3 V controllers.
Empfohlen
Automotive Body Electronics Submodules
The HC08MR family's wide temperature-grade options and 5 V robustness made it common in automotive body electronics such as mirror controllers, seat adjusters, and HVAC flap actuators. The MC908MR32VFUE's PWM channels drive DC motors for position control while the ADC reads potentiometer or Hall-effect position feedback, closing the loop in software. LVD protects against under-voltage events during engine cranking, and the master reset pin plus POR provide disciplined recovery after load-dump-protected supply transients. Its 32KB FLASH allows adaptive position-calibration tables to be updated in the field. Designers should verify the VFUE ordering suffix against NXP ordering tables to confirm the required automotive temperature grade.
Empfohlen
Power Supply and Battery Charger Supervision
In 5 V switch-mode power supplies and lead-acid or NiMH charger systems, the MC908MR32VFUE acts as a supervisory controller: its ADC monitors output voltage and current sense signals, PWM outputs adjust converter duty cycle or charger current, and LVD detects brown-out conditions to trigger safe shutdown. SCI communication reports status and fault codes to a front panel or host, while SPI interfaces to external precision measurement ICs. The 8.2 MHz bus executes constant-current/constant-voltage charging state machines with margin. Fully static operation and stop mode reduce quiescent draw in standby states. FLASH memory stores calibration constants and charge-history logs without external EEPROM.
Empfohlen
Legacy Board Service and Repair
For factories and service organizations maintaining installed HC08MR-based equipment, the MC908MR32VFUE remains the authentic repair component. Its FLASH program memory allows spare boards to be programmed with the latest firmware revision using the monitor mode entered via the master reset pin, keeping fleets of deployed controllers consistent. Compared with scavenging used parts from secondary markets, sourcing verified stock with traceable date codes avoids counterfeit risk that is elevated for EOL 8-bit MCUs. The same 64-QFP footprint accepts family variants (MR16, MR32 CFU) if the exact suffix is unavailable, provided firmware memory requirements fit the substitute's FLASH size.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für MC908MR32VFUE – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | MC68HC908MR32CFU | MC908MR32CFUE | MC908MR16CFUE | MC908LK24CFUE |
|---|---|---|---|---|---|
| Package | 64-QFP (14 x 14 mm) | 64-QFP (FU) - same footprint | 64-QFP (FUE) - same footprint | 64-QFP (FUE) - same footprint | 64-QFP (FUE) - same footprint |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core / Speed | HC08, 8 MHz | HC08, 8 MHz | HC08, 8 MHz | HC08, 8 MHz | HC08, 8 MHz |
| Program Memory | 32KB FLASH | 32KB class | 32KB FLASH | 16KB FLASH | 24KB FLASH |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V |
| Connectivity | SCI, SPI | SCI, SPI | SCI, SPI | SCI, SPI | SCI, SPI |
| Primary Differentiator | 32KB FLASH motor-control MCU | HC908 subfamily ordering option | Temperature-grade variant of same die | Cost-reduced 16KB option | LK family peripheral mix |
Wichtigste Unterscheidungsmerkmale
- Largest FLASH in the MR family (vs. MC908MR16CFUE)
- Reprogrammable FLASH rather than ROM (vs. MC68HC908MR32CFU)
- Dedicated motor-control peripheral set (vs. MC908LK24CFUE)
Designhinweise
The MC908MR32VFUE is End of Life per NXP product information. Before finalizing any new or refreshed design, execute a last-time-buy sized to cover the remaining service life of the product, and file the NXP discontinuance PCN with your change-control system. Do not use this part in new designs; if a redesign is unavoidable, evaluate the active MC9S08 family early enough to absorb firmware porting effort, since the CPU08-to-S08 instruction set differences and 3.3 V I/O levels both require rework.
The device operates from a 5 V supply with integrated LVD and POR. Decouple the VDD pin with 0.1 uF ceramic placed within a few millimeters of the pin, plus bulk capacitance near the board supply entry. When PWM outputs drive motor gate circuitry, keep high-current ground returns separate from the MCU analog ground and join them at a single star point to prevent ground bounce from corrupting ADC readings of current-sense signals. Verify the LVD trip point against the worst-case droop of your 5 V rail during motor stall transients.
The 64-QFP (14 x 14 mm) package uses 0.65 mm-pitch leads; specify a solder-mask-defined land pattern per the datasheet mechanical drawing and inspect with AOI to catch bridging. Route the oscillator traces short and guard them from PWM and motor-driver traces to preserve clock integrity. Keep the programming interface - reset and monitor-mode entry pins - accessible through test points so in-system FLASH reprogramming and break-module debugging remain possible after assembly, which is essential for firmware updates during EOL service.
Estimated: at 5 V and typical HC08-class active current on the order of tens of milliamperes, power dissipation is roughly 0.1-0.3 W, producing a junction temperature rise well within limits for a 64-QFP on a standard two-layer board with modest copper. Thermal design is rarely limiting for this MCU; concentrate instead on the motor driver stage thermals. Confirm exact current consumption figures against the family datasheet electrical characteristics tables rather than relying on this estimate.
Compliance-Informationen
Compliance status not stated in provided verified data. NXP product page lists Environmental Quality and Discontinuance sections for this part; consult nxp.com/part/MC908MR32VFUE for official RoHS/REACH declarations for the specific date code.
