MC68331CFC25B1 - 32-Bit 25 MHz ROMless MCU | NXP
Référence : MC68331CFC25B1 ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $0 | $0,00 |
| 10 | $0 | $0,00 |
| 100 | $0 | $0,00 |
| 500 | $0 | $0,00 |
| 1 000 | $0 | $0,00 |
MC68331CFC25B1 Présentation
A microcontroller is a semiconductor device that combines a processor core, memory interfaces, timers, communications peripherals, interrupt control, and other hardware functions on one integrated circuit. In the hierarchy of electronic components, the MC68331 belongs to the microcontroller, embedded processor, and semiconductor categories. Its ROMless architecture requires an external memory source for program storage, while its integrated peripherals can reduce the component count in an embedded control design.
The principal verified characteristics are a 32-bit CPU32 architecture, a 25 MHz operating frequency, ROMless operation, and a 132-pin PQFP package. These specifications define the external memory and clock requirements of the design while providing a large pin count for peripheral connections. The 24.13 mm by 24.13 mm package is substantially larger than a typical small-outline or compact QFP design, but it offers extensive package access for systems requiring numerous I/O, bus, control, and power connections.
The MC68331 technical summary describes a highly integrated 32-bit microcontroller with high-performance data-manipulation capabilities and powerful peripheral subsystems. Its standard modules communicate through a common intermodule bus, providing an organized architecture for connecting processor and peripheral functions. This makes the device relevant to established embedded platforms where the surrounding software, memory interface, and peripheral ecosystem are already designed around the MC68331 family.
Typical applications include industrial equipment, data acquisition systems, communications controllers, motion or machine control, test equipment, and embedded products that retain an existing MC68331-based architecture. Designers should confirm the exact pinout, electrical limits, memory requirements, timing, peripheral availability, and software compatibility against the relevant manufacturer technical summary before layout or firmware deployment. The verified search results do not provide a complete manufacturer pin table, so no pin names or electrical values are inferred here.
For new designs, the critical design trade-off is the ROMless requirement: external program-memory hardware must be specified separately, and the complete board-level memory map must be validated. For repair or continuation of an existing product, preserving the original memory interface, clock source, bus timing, and package footprint is generally more important than selecting a modern controller with a different architecture. The 132-PQFP package and 25 MHz CPU32 position should therefore be treated as fixed constraints when evaluating this MPN.
This page consolidates the verified distributor identity, package information, and cross-reference search context for MC68331CFC25B1. It distinguishes documented facts from unavailable technical parameters and emphasizes the need to validate memory, pin, electrical, and lifecycle details with the original technical documentation before making a production decision.
Alternatives de remplacement direct pour MC68331CFC25B1 — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
Aucune alternative de remplacement direct disponible pour ce produit.
Demander des alternativesMC68331CFC25B1 Valeurs maximales et caractéristiques électriques
| Product Type | 32-bit ROMless microcontroller |
| CPU Architecture | CPU32, 32-bit |
| Operating Frequency | 25 MHz |
| Program Memory | ROMless |
| Package Type | 132-pin PQFP |
| Package Dimensions | 24.13 mm x 24.13 mm |
| Type de montage | Surface mount |
| Process Technology | HCMOS |
| Intermodule Communication | Common intermodule bus (IMB) |
| Peripheral Integration | Integrated peripheral subsystems |
| Data Manipulation | 32-bit data processing |
| Statut RoHS | unknown |
| REACH Status | unknown |
| AEC-Q100 Qualification | unknown |
Guide de configuration des broches du MC68331CFC25B1 24.13 mm x 24.13 mm
Configuration des broches du MC68331CFC25B1 (boîtier 24.13 mm x 24.13 mm). Ce circuit intégré numérique comprend des GPIO, des interfaces de communication (UART, SPI, I2C) et des broches d'alimentation. Consultez la fiche technique du fabricant pour les fonctions alternatives des broches et les options de configuration. Indispensable pour la conception de systèmes embarqués et la conception de circuits imprimés.
Aucune donnée de brochage détaillée disponible pour MC68331CFC25B1.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
MC68331CFC25B1 convient pour 6 applications: Legacy Industrial Control, Data Acquisition Systems, Communications Equipment, Test and Measurement Instruments, Machine and Motion Control, Embedded OEM Equipment.
Legacy Industrial Control
The MC68331CFC25B1 is relevant to legacy industrial-control equipment where the existing controller uses the MC68331 CPU32 and IMB peripheral architecture. At 25 MHz, the device provides a defined processing platform for coordinating machine functions through its integrated peripheral subsystems. Because the verified data identifies a ROMless 132-pin PQFP design, the system must retain or reproduce its external program-memory interface and original pin-level connections. This application is most appropriate for maintenance, continuation, or redesign of proven equipment rather than a new design with unspecified industrial temperature and safety requirements.
Recommandé
Data Acquisition Systems
A 32-bit ROMless MC68331-based controller can fit an established data-acquisition system when the board already depends on the CPU32 instruction set and IMB-connected peripherals. The 25 MHz operating point provides the documented processing basis for sampling, digital filtering, and host-interface coordination. The 132-pin PQFP package offers many external connection points, but the available evidence does not identify ADC channels, timers, serial interfaces, or interrupt assignments. Those details must be matched to the original schematic and technical summary before selecting this MCU for a new acquisition platform.
Recommandé
Communications Equipment
MC68331CFC25B1 may be used in legacy communications equipment when the original firmware and peripheral subsystem assignments are already established. The CPU32 architecture and common intermodule bus provide a structured way to connect processor functions to communication peripherals, while the 25 MHz clock is the verified operating frequency. The supplied data does not confirm UART, SPI, CAN, Ethernet, or other interface availability, so communications suitability cannot be generalized. Engineers should verify the exact peripheral pins, timing, electrical limits, and external memory arrangement in the original MC68331 documentation.
Recommandé
Test and Measurement Instruments
An MC68331-based system can serve in test and measurement equipment that retains an established CPU32 control architecture. The 32-bit processing core and integrated peripheral subsystems can support sequencing, control logic, data formatting, and external instrument coordination. The verified package and frequency are suitable starting constraints for board continuity, but the available data does not identify measurement-specific peripherals, analog interfaces, timing accuracy, or operating-temperature limits. New test equipment should therefore use the original system architecture as the reference and verify all missing electrical and peripheral specifications before committing to the legacy MCU.
Recommandé
Machine and Motion Control
The MC68331CFC25B1 can be considered for a legacy machine-control design only when its original peripheral map and timing are already known to match the equipment. The 32-bit CPU32 architecture and 25 MHz operation provide the documented computational platform, while the integrated peripheral subsystems support a modular control implementation. The 132-pin PQFP package exposes a large number of connections but also requires careful PCB routing and assembly planning. Since motor-control timers, encoder interfaces, protection inputs, and electrical limits are not supplied, verify them in the MC68331 technical summary and original controller schematic.
Recommandé
Embedded OEM Equipment
MC68331CFC25B1 is appropriate for continuing production of OEM equipment when the original firmware, external memory, board layout, and peripheral assignments are available. Its documented 32-bit CPU32 core, 25 MHz frequency, ROMless configuration, and 132-pin PQFP package make board continuity the primary design benefit. A new OEM platform should not assume that the part has modern flash integration, current tooling, or broad regulatory certification. Instead, preserve the legacy architecture and validate supply voltage, timing, temperature, package land pattern, and programming process against the original product documentation.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour MC68331CFC25B1 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit |
|---|---|
| Brand | NXP Semiconductors |
| Package | 132-pin PQFP, 24.13 mm x 24.13 mm |
| CPU Architecture | CPU32, 32-bit |
| Operating Frequency | 25 MHz |
| Program Memory | ROMless |
| Process Technology | HCMOS |
| Intermodule Bus | Common intermodule bus (IMB) |
| Peripheral Integration | Integrated peripheral subsystems |
| Drop-In Status | Target reference part |
Principaux différenciateurs
- Legacy MC68331 architecture continuity (vs A modern flash microcontroller)
- ROMless implementation (vs A microcontroller with internal flash)
- Documented operating point (vs MC68331MEH16)
Notes de conception
Because MC68331CFC25B1 is ROMless, first confirm the external program-memory supply arrangement and the power architecture of the original board. The supplied data does not state supply voltage or current limits, so do not infer power values from the 25 MHz CPU frequency. Compare the original schematic's regulator ratings, decoupling network, reset circuitry, and external memory voltage against the original technical summary before rebuilding the power section. This is particularly important when substituting a part from different inventory or a different sourcing channel.
Use the original 132-pin PQFP land pattern and assembly drawings as the PCB-layout starting point. A 24.13 mm by 24.13 mm quad-flat package requires adequate routing escape, solder-mask and paste control, and component clearance around all leads. Do not assume that a smaller modern MCU can replace it without a footprint redesign. Verify pin numbering, pin functions, power pins, NC pins, clock pins, and IMB signals against the exact device documentation before releasing fabrication files.
The most common replacement error is treating a related MC68331 order code as automatically equivalent. MC68331MEH16 is mentioned in the supplied search results only as a comparison target; its pinout, package, voltage, memory interface, and timing were not verified here. Likewise, a modern controller with higher performance is not a drop-in replacement. Preserve the CPU32 memory map, startup sequence, reset behavior, peripheral assignments, and external program-memory connection, then validate firmware and timing on hardware before production substitution.
Informations de conformité
Compliance status was not present in the verified manufacturer or distributor data and must be confirmed with current supplier documentation.
