MC68EC040RC40A - 32-Bit 40MHz M680x0 MPU | NXP | 179-PGA
Référence : MC68EC040RC40A ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $145 | $145,00 |
| 10 | $130.5 | $1 305,00 |
| 100 | $115 | $11 500,00 |
| 500 | $98.75 | $49 375,00 |
| 1 000 | $87 | $87 000,00 |
MC68EC040RC40A Présentation
The MC68EC040 belongs to the Motorola/Freescale/NXP M68000 microprocessor family - a CISC 32-bit architecture that traces lineage back to the original MC68000 of 1979. Within the broader taxonomy, the M680x0 sits as a high-performance general-purpose MPU (distinct from the smaller ColdFire family that derives from it). Each successive generation added caches, MMUs, and FPU integration; the EC040 specifically adds caches but omits the MMU found in the full MC68040, giving embedded designers a deterministic, real-time-friendly memory model.
Key features include a 40 MHz maximum operating frequency, 5 V power supply, 32-bit data/address bus, separate 8 KB instruction and 8 KB data write-back caches, hardware multiply/divide, and a six-stage instruction pipeline. The part supports burst-mode memory accesses and a burst-fill bus protocol that maximises throughput to external SRAM. The 179-PGA ceramic package is designed for through-hole PCB mounting and socket insertion, which was standard for MPU evaluation platforms and industrial control boards of its era.
Typical applications include industrial process controllers, CNC machine tool controllers, medical instrumentation controllers, data acquisition systems, and legacy upgrade designs where the developer needs a 32-bit MPU with deterministic execution, on-chip cache, and pin compatibility with the full M68040 family footprint. Embedded Linux or RTEMS deployments that have already been ported to the EC040 can also benefit from a single-source upgrade to higher-speed variants.
When designing with this device, ensure proper power-supply decoupling (multiple bulk and 0.1 uF ceramic caps) on the 5 V rails, careful signal integrity planning for the 40 MHz system clock domain, and adequate thermal dissipation through the PGA heatsink interface. Bus arbitration and cache coherency must be managed explicitly in multi-master systems.
Alternatives de remplacement direct pour MC68EC040RC40A — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec MC68EC040RC40A (même facteur de forme et même empreinte) — différant par Mounting Type, Data Bus Width, Processor Type, Address Bus Width, Core Architecture.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
MC68EC040RC25A
✅ Remplacement direct✓ En stock
$92 / unité
Voir la fiche technique →MC68040RC40A
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC68040RC25A
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC68EC040RC50A
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC68EC040RC40A Valeurs maximales et caractéristiques électriques
| Processor Type | M680x0 32-Bit Microprocessor |
| Core Architecture | M68040 (M680x0 CISC) |
| Fréquence d'horloge maximale | 40 MHz |
| Core Count | 1 |
| Largeur du bus de données | 32-bit |
| Tension d'alimentation de fonctionnement | 5 V |
| Integrated Cache | 8 KB I-cache + 8 KB D-cache |
| MMU (Memory Management Unit) | Not present (EC variant) |
| FPU (Floating-Point Unit) | Not present (EC variant) |
| Package Type | 179-pin PGA (Pin Grid Array) |
| Package Dimensions | 47.24 x 47.24 mm |
| Type de montage | Through-Hole / Socket |
| Process Technology | HCMOS |
| Packaging (shipping) | Tray |
Guide de configuration des broches du MC68EC040RC40A 47.24 x 47.24 mm
Configuration des broches du MC68EC040RC40A (boîtier 47.24 x 47.24 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 MC68EC040RC40A.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
MC68EC040RC40A convient pour 7 applications: Industrial Process Controllers, Medical Instrumentation Controllers, CNC Machine Tool Controllers, Legacy Embedded Aerospace Avionics, Data Acquisition Front-End Processors, Network Routers and Bridge Platforms, Scientific Instruments and Test Equipment.
Industrial Process Controllers
The MC68EC040RC40A fits industrial process controllers because its 32-bit M680x0 architecture delivers deterministic execution without MMU-induced TLB miss penalties, while its 8 KB I-cache + 8 KB D-cache sustain real-time loop rates. Its 40 MHz clock handles PID computation, sensor fusion, and HMI refresh with comfortable overhead. The 5 V supply matches legacy industrial backplanes, and the 179-PGA ceramic package survives high-vibration factory-floor mounting. Designers porting VxWorks, RTEMS, or pSOS applications already running on M68040 platforms gain a head start on tooling, BSPs, and driver libraries, avoiding the cost of an MPU architecture switch.
Recommandé
Medical Instrumentation Controllers
The MC68EC040RC40A's deterministic execution and absence of MMU-induced latency make it well-suited to medical instrumentation such as patient monitors, infusion pumps, and laboratory analyzers. Its 32-bit data path handles 16-bit / 24-bit ADC sample streams and DSP-style filters; the 8 KB I-cache holds hot loop code while the D-cache buffers sample blocks. The 5 V supply and through-hole 179-PGA package simplify long-life-cycle medical equipment boards that often remain in production a decade or more, where component obsolescence planning matters as much as raw performance.
Recommandé
CNC Machine Tool Controllers
For CNC machine tool controllers, the MC68EC040RC40A provides the integer horsepower to interpolate multi-axis motion profiles and decode G-code in real time. The 32-bit ALU and hardware multiply/divide accelerate closed-loop servo calculations, while burst-mode memory access sustains the deterministic axis-update rate demanded by step/direction pulse generators. The 179-PGA package is mechanically robust for industrial enclosure mounting, and the mature software ecosystem (RTEMS, VxWorks, custom motion-control stacks) lowers firmware development cost for machine builders maintaining decades-long product support windows.
Recommandé
Legacy Embedded Aerospace Avionics
The MC68EC040RC40A is found in legacy aerospace avionics subsystems where DO-178B / MIL-HDBK-454 certified software stacks are deployed on long-running programs. Its deterministic interrupt latency, 32-bit instruction set, and heritage pedigree align with avionic mission computers, navigation aids, and flight data recorders. The 40 MHz clock handles sensor multiplexing, ARINC-429 bus protocol parsing, and built-in-test (BIT) routines. The 179-PGA ceramic package withstands the thermal and vibration environments of avionics bays; however, for new designs, BGA-packaged ColdFire variants are now preferred due to RoHS and counterfeit-risk concerns.
Recommandé
Data Acquisition Front-End Processors
The MC68EC040RC40A's 40 MHz 32-bit datapath suits data acquisition front-end processors that aggregate multiple high-speed ADC channels, perform digital filtering, and forward buffered packets to a host system. The 32-bit memory interface supports DMA bursts of multi-channel sample arrays; 8 KB each of I/D cache keeps the FIR/IIR filter inner loops resident. The cache architecture reduces average external memory access count, lowering overall board cost by allowing slower (and cheaper) external SRAM. The 5 V tolerant bus pairs naturally with 5 V industrial analog front-end ICs.
Recommandé
Network Routers and Bridge Platforms
Embedded routers and bridging equipment of the late 1990s and early 2000s often used the MC68EC040RC40A alongside dedicated Ethernet controllers and HDLC serial channels. Its deterministic 32-bit performance handles IP forwarding tables, routing daemons, and bridging tables at small-port-count scales. The 8 KB caches keep routing-table lookups fast, and the absence of MMU avoids TLB-walk stalls during packet-burst handling. The 179-PGA through-hole package is best suited to ruggedised rack-mounted systems. For new designs, ColdFire MCF5272/5307 with on-chip 10/100 Ethernet provides stronger BOM consolidation in a modern BGA package.
Recommandé
Scientific Instruments and Test Equipment
The MC68EC040RC40A sees use in scientific instruments like oscilloscopes, spectrum analyzers, and laboratory test gear from the 1990s. Its 32-bit performance handles waveform math, FFT pre-processing, and digital filter blocks in measurement firmware, while the hardware integer divide aids gain calibration. The 179-PGA ceramic package tolerates the elevated ambient temperatures found in instrument chassis, and the M68000 architecture was widely supported in vendor test-and-measurement code bases, supporting long-term firmware maintenance on deployed equipment that may remain in service 20+ years.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour MC68EC040RC40A — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | MC68EC040RC25A | MC68040RC40A | MC68040RC25A | MC68EC040RC50A |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors (originally Motorola/Freescale) | NXP Semiconductors / Motorola | NXP Semiconductors / Motorola | NXP Semiconductors / Motorola | NXP Semiconductors / Motorola |
| Package | 179-PGA (47.24 x 47.24 mm) | 179-PGA (47.24 x 47.24 mm) | 179-PGA (47.24 x 47.24 mm) | 179-PGA (47.24 x 47.24 mm) | 179-PGA (47.24 x 47.24 mm) |
| Maximum Clock Frequency | 40 MHz | 25 MHz (-37.5%) | 40 MHz (same) | 25 MHz (-37.5%) | 50 MHz (+25%) |
| Cache Size (I + D) | 8 KB + 8 KB (write-back) | 8 KB + 8 KB (same) | 8 KB + 8 KB (same) | 8 KB + 8 KB (same) | 8 KB + 8 KB (same) |
| MMU (Memory Management Unit) | Not present (EC variant) | Not present | Present (full MMU) | Present (full MMU) | Not present |
| FPU (Floating-Point Unit) | Not present (EC variant) | Not present | Present (full FPU) | Present (full FPU) | Not present |
| Operating Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V |
| Data Bus Width | 32-bit | 32-bit | 32-bit | 32-bit | 32-bit |
| Lifecycle Status | Obsolete (stock-only at licensed distributors) | Obsolete | Obsolete | Obsolete | Obsolete |
Principaux différenciateurs
- Cache-only M68040 variant without MMU/FPU complexity (vs MC68040RC40A)
- 40 MHz speed grade with full 32-bit M68040-family instruction set (vs MC68EC040RC25A)
- Through-hole ceramic PGA for long-lifecycle industrial designs (vs MC68LC040FE40A (184-CQFP))
- 8 KB + 8 KB split on-chip cache enables low SRAM BOM cost (vs MC68EC030 (no on-chip cache))
Notes de conception
The MC68EC040RC40A requires a tightly regulated 5 V supply with both bulk (>= 10 uF tantalum) and high-frequency ceramic (0.1 uF, one per VCC pin set) decoupling. Pin sequencing is critical: VCC must rise monotonically to 4.5 V within 50 ms; failure to meet this violates the POR (power-on-reset) requirements and risks latch-up. Designers should include a supervisor IC (e.g., MAX1232) on RESET to guarantee the part starts in a known state across all VIN ramp profiles. ESTIMATED: worst-case Icore at 40 MHz in the M68040 family is approximately 350 mA (~1.75 W) for the EC variant.
The 179-PGA ceramic package relies on top-side or bottom-side heatsink attachment. ESTIMATED: at full-load 40 MHz operation the EC040 part dissipates roughly 1.5 to 2 W internally; a simple aluminium heatsink is normally sufficient. Without heatsinking, junction temperature rise in a sealed enclosure may push the die above the 70 C ambient operating limit and trigger internal thermal warning. Always validate thermal margin with a thermocouple on the PGA top surface in the actual enclosure airflow profile.
M68040 bus signals transition at high edge rates; route the 32-bit address and data buses with matched length within each byte lane (within 0.5 inch skew). Place the external cache SRAM on the same side of the MPU to minimise trace inductance. Use a 4-layer PCB with dedicated power and ground planes; the 0 V plane aids impedance control and reduces return-path inductance. A series termination resistor (22 to 33 ohm) on the clock line reduces overshoot.
Do not confuse MC68EC040 (cache-only, no MMU/FPU) with MC68LC040 (reduced cache, also lacks FPU) or MC68040 (full MMU + FPU). Each has a different cache/MMU/FPU matrix. Verify the desired variant matches your memory model and floating-point needs. The "RC" package suffix specifically denotes the PGA carrier; "FE" denotes CQFP. Mixing PGA and CQFP versions requires PCB redesign.
The 40 MHz system clock generates significant EMI harmonics; place a ferrite on the clock line near the MPU and ensure the L2 cache SRAM implements flow-through mode with BUSREQ arbitration properly configured. Use an oscilloscope and current probe during board bring-up to verify ground bounce on the synchronous bus and clean up overshoot/undershoot on the data lines before finalising the layout.
Informations de conformité
RoHS compliance could not be confirmed from the verified data. M68040 family predates RoHS (2006) - many original parts are lead-containing. AEC-Q100 not applicable to commercial/industrial MPUs. Confirm RoHS status with the chosen distributor for any post-2006 production where lead-free reflow compatibility is required.
