MC68332ACEH25 - 32-Bit 25MHz MCU CPU32 | NXP | 132-PQFP
N.º de pieza: MC68332ACEH25 ✗ Fin de vida| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $42.5 | $42,50 |
| 10 | $39.2 | $392,00 |
| 100 | $35.8 | $3.580,00 |
| 500 | $32.1 | $16.050,00 |
| 1.000 | $29.5 | $29.500,00 |
MC68332ACEH25 Descripción general
A 32-bit modular microcontroller is a class of embedded processor built from independent functional blocks sharing a common intermodule bus (IMB). In the broader hierarchy, the MC68332 belongs to the Motorola-originated M683xx family of 68K-architecture microcontrollers, positioned above 8-bit and 16-bit MCUs in data-manipulation capability and below full application processors in complexity. Standardized modules allowed Motorola, later Freescale and now NXP, to rapidly derive application-tailored derivatives from the same die platform.
Key features include the 32-bit CPU32 core clocked at 25 MHz, ROMless program memory operation requiring external FLASH or RAM, the TPU coprocessor providing 16 independent timing channels for complex event sequencing without CPU intervention, and the QSM combining a queued serial peripheral interface with a serial communications interface on shared pins.
The IMB architecture decouples peripheral timing from CPU execution, so the TPU can generate PWM, capture, and motor-control timing waveforms with microsecond-level determinism while the CPU32 handles application logic. The SIM supplies system clock generation, external bus control, chip-select logic, and watchdog protection. According to the NXP MC68332 technical summary (MC68332TS), the modular design facilitates rapid development of devices tailored for specific applications.
Typical applications include industrial automation controllers, automotive body and powertrain modules, thermal sensor data loggers with external FLASH and RAM, and motor-control systems that exploit the TPU's 16 timing channels.
Designers must budget for external program memory since the part is ROMless, and must recalibrate clock-dependent firmware when substituting 16 MHz variants for 25 MHz parts.
This page synthesizes distributor pricing context, EOL status, drop-in alternative analysis, and practical design notes not found in the manufacturer datasheet.
Alternativas directas para MC68332ACEH25 — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con MC68332ACEH25 (mismo factor de forma y huella) — difiere en Core Processor, Intermodule Bus, Lifecycle Status, Maximum Clock Frequency, Peripherals.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
MC68332ACEH16
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$40.34 / unidad
Ver hoja de datos →MC68332ACEH20
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
SPAKMC332AVFC16
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MC68332GCFC16
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
MC68332ACEH25 Valores máximos y características eléctricas
| Core Processor | CPU32 (32-bit) |
| Core Size | 32-Bit |
| Frecuencia de reloj máxima | 25 MHz |
| Program Memory Type | ROMless |
| Product Series | M683xx |
| System Integration Module | SIM (included) |
| Time Processing Unit | TPU (included) |
| Queued Serial Module | QSM (included) |
| Intermodule Bus | IMB |
| Encapsulado | 132-PQFP (24.13 x 24.13 mm) |
| Tipo de montaje | Surface Mount |
| Architecture | Modular microcontroller (68K family) |
| Peripherals | TPU, QSM, SIM, watchdog |
| External Memory Support | External FLASH/RAM required (ROMless) |
| Manufacturer | NXP Semiconductors (originally Motorola/Freescale) |
| Estado del ciclo de vida | End-of-Life (per NXP Community, 2026) |
Guía de configuración de pines de MC68332ACEH25 132-pqfp (24.13 x 24.13 mm)
Configuración de pines para MC68332ACEH25 (encapsulado 132-pqfp (24.13 x 24.13 mm)). Este CI digital incluye GPIO, interfaces de comunicación (UART, SPI, I2C) y pines de alimentación. Consulte la hoja de datos del fabricante para conocer las funciones alternativas de los pines y las opciones de configuración. Esencial para el diseño de sistemas embebidos y el diseño de PCB.
No hay datos detallados de patillaje disponibles para MC68332ACEH25.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
MC68332ACEH25 es adecuado para 6 aplicacións: Industrial Automation Controllers, Thermal Sensor Data Acquisition, Automotive Body and Powertrain Modules, Motor Control Systems, Networking and Communication Equipment, Test and Measurement Instrumentation.
Industrial Automation Controllers
The MC68332ACEH25 fits industrial automation controllers where deterministic multi-channel timing and 32-bit data manipulation are both required. Its 25 MHz CPU32 handles protocol parsing and HMI logic while the 16-channel TPU generates PWM and captures encoder or sensor events in hardware, immune to CPU interrupt latency. The SIM's programmable chip selects simplify attaching external FLASH, RAM, and FPGA-based I/O over the 32-bit external bus. Because the part is ROMless, designers pair it with external nonvolatile memory sized to firmware needs. For retrofit and legacy-line maintenance, the MC68332 remains the path of least firmware risk; new controller designs should evaluate modern MCUs with hardware timer arrays.
Recomendado
Thermal Sensor Data Acquisition
NXP Community users describe MC68332 systems with external FLASH and RAM collecting data from thermal sensors, a pattern the MC68332ACEH25 serves well. The QSM's QSPI serial peripheral reads multiple temperature sensor channels (for example SPI-output digital sensors) while the CPU32 filters and logs samples to external memory. The TPU can time-stamp readings for trend analysis with hardware precision, and the SIM's watchdog protects long unattended logging sessions. The 132-PQFP footprint keeps the two-chip MCU-plus-memory solution compact. Given the family's EOL status, new logging designs should consider this architecture only where existing MC68332 firmware and toolchains are already validated and production stock is secured.
Recomendado
Automotive Body and Powertrain Modules
The MC68332 family was widely used in automotive electronic control units, where the CPU32's mature 68K instruction set and the TPU's 16 timing channels drove injectors, solenoids, and stepper actuators with hardware-level determinism. The ACE temperature grade supports extended ambient conditions typical of underhood and cabin modules. External FLASH plus the SIM's bus monitor and watchdog provided fail-safe behavior demanded by automotive QA. Although the family is now EOL and successors must meet current AEC-Q100 requirements, service organizations maintaining in-flight vehicle platforms still depend on MC68332-based ECUs, making remaining authorized stock valuable for repair and remanufacture rather than new automotive production.
Recomendado
Motor Control Systems
The TPU is the MC68332's decisive advantage in motor control: its 16 channels run microcode-based functions for BLDC commutation, stepper sequencing, and PWM generation without CPU loading, allowing the 25 MHz CPU32 to simultaneously run fieldbus protocols and supervisory control. TPU dead-time insertion and period measurement are handled in hardware, delivering deterministic edges that software timers struggle to match. The QSM's QSPI reads current-sense ADCs while the SIM generates the system clock and chip selects for external program memory. Designs preserving validated TPU microcode should stay on MC68332 family parts while stock lasts; new motor-control designs should map TPU functions to modern timer/MCAP peripherals.
Recomendado
Networking and Communication Equipment
Legacy industrial networking and telemetry equipment used the MC68332's QSM SCI for RS-232/RS-485 links and the 32-bit external bus for multi-port memory. The QSPI can bit-bang proprietary serial protocols to line cards and modems while the CPU32 runs higher-layer stack firmware from external FLASH. The SIM's programmable chip selects and bus monitor simplify multi-device bus design and recovery from bus faults. The 25 MHz grade (ACEH25) provides headroom for protocol processing versus 16 MHz variants, at the cost of stricter memory timing margins on the external bus. For maintaining installed communication racks, firmware-compatible speed-grade substitutions are possible with clock-dependent recalibration.
Recomendado
Test and Measurement Instrumentation
Bench and rack instrumentation built on the CPU32 exploited the TPU's precise time-interval measurement - input capture resolution is set by the TPU counter clock, giving sub-microsecond event timing independent of CPU activity. The MC68332ACEH25's 32-bit core computes calibration math and formats results for displays or the SCI interface, while QSPI scans front-panel ADCs and DACs. External FLASH holds calibration tables that field service can update. The 132-PQFP two-layer-friendly footprint supported dense analog/digital mixed layouts. Instruments already designed around CPU32 firmware and TPU microcode remain most safely maintained on family stock; new instruments should adopt modern MCUs with hardware capture timers and precision analog front-ends.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para MC68332ACEH25 — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | MC68332ACEH16 | MC68332ACEH20 | SPAKMC332AVFC16 | MC68332GCFC16 |
|---|---|---|---|---|---|
| Package | 132-PQFP (24.13 x 24.13 mm) | 132-PQFP (24.13 x 24.13 mm) - same | 132-PQFP (24.13 x 24.13 mm) - same | 132-PQFP (24.13 x 24.13 mm) - same | 132-PQFP (24.13 x 24.13 mm) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core | CPU32, 32-bit | CPU32, 32-bit | CPU32, 32-bit | CPU32, 32-bit | CPU32, 32-bit |
| Max Clock Frequency | 25 MHz | 16 MHz | 20 MHz | 16 MHz | 16 MHz |
| Program Memory | ROMless (external required) | ROMless (external required) | ROMless (external required) | ROMless (external required) | ROMless (external required) |
| TPU Timing Channels | 16 (TPU) | 16 (TPU) | 16 (TPU) | 16 (TPU) | 16 (TPU) |
| Firmware Compatibility | Baseline (25 MHz) | Runs, clock-dependent code recalibration needed | Runs, clock-dependent code recalibration needed | Runs without issues per NXP; recalibrate clock configs | Runs, clock-dependent code recalibration needed |
| Lifecycle Status | EOL | EOL | EOL | EOL (per NXP Community, 2026) | EOL |
Diferenciadores clave
- Fastest family speed grade (frente a MC68332ACEH16)
- TPU timing coprocessor (frente a MC68332ACEH20)
- ROMless flexibility (frente a SPAKMC332AVFC16)
Notas de diseño
The MC68332 family is a 5 V device; verify your supply regulation and decoupling budget across the 132-pin PQFP. Place at least one 0.1 uF ceramic decoupling capacitor per supply pin pair, plus bulk 10 uF near the corner power pins. Because the part drives a 32-bit external bus to ROMless FLASH/RAM, bus switching current peaks with address/data transitions - confirm supply headroom during FLASH erase/write bursts, which draw the largest simultaneous internal and external bus currents.
The single most common MC68332 substitution error is dropping a 16 MHz part (e.g., SPAKMC332AVFC16) onto a 25 MHz design without recalibrating clock-dependent configuration. Per the NXP Community response of March 2026, firmware runs without issues but all system-clock-dependent configurations - SCI baud rates, QSPI baud rates, TPU period registers, timer prescalers, and watchdog timeouts - must be recomputed for the 16 MHz system clock. Build these values from a single clock-frequency constant in firmware to make speed-grade swaps safe.
The 132-PQFP (24.13 x 24.13 mm) has 0.65 mm-pitch leads on four sides; use a grid-array footprint with 0.3 mm wide pads and inspect with magnification or X-ray for solder bridges. Route the external bus with controlled stub length - keep address/data lines under roughly 10 cm and series-terminate long traces to limit ringing at 25 MHz bus rates. The exposed numbering starts at the pin-1 dot at the top-left corner; verify against the datasheet pinout diagram before releasing the footprint.
The entire MC68332 family including SPAKMC332AVFC16 is End-of-Life per NXP (2026). Do not design it into new products. For legacy sustainment, secure last-time-buy stock now, qualify authorized excess brokers with date-code and provenance screening, and begin a redesign roadmap that maps TPU timing functions to modern MCU hardware timer arrays. Counterfeit risk on EOL 68K parts is high; prefer distributors with documented chain of custody.
Información de cumplimiento
The MC68332 is a legacy EOL part predating modern environmental compliance documentation; compliance status not stated in the provided verified data.
