MC68EC040RC33A-FR - 33MHz 68040 MPU 179-PGA | Freescale
N.º de pieza: MC68EC040RC33A-FR ⚠ Última compra| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $181.73 | $181,73 |
| 10 | $165 | $1.650,00 |
| 100 | $120 | $12.000,00 |
| 250 | $95 | $23.750,00 |
| 500 | $73.56 | $36.780,00 |
MC68EC040RC33A-FR Descripción general
A microprocessor (MPU) is the central processing unit of a computer system, executing instructions fetched from memory and controlling peripheral devices through buses. The MC68040 family belongs to the M68000 architecture hierarchy: 32-bit CISC microprocessor -> M680x0 family -> Motorola/NXP legacy portfolio -> embedded MPU. Its HCMOS fabrication process yields a typical 5 V single-rail supply, fast static design, and the classic 68000 programmer's model with eight 32-bit data registers and eight 32-bit address registers.
Key features include 33 MHz core clock, integrated 8 KB unified instruction/data cache (Harvard-style split internally), a 32-bit external data bus with dynamic bus sizing to 8/16 bits, and a built-in burst-mode memory controller. The 'EC' designation removes the full MMU found on the MC68040, replacing it with simple access protection suitable for real-time embedded operating systems. The 179-pin ceramic PGA provides robust thermal performance for industrial environments and supports socketed prototyping or production assembly.
The architecture combines a six-stage instruction pipeline with dual instruction-fetch and execution units, allowing the 68040 to approach RISC-like throughput on optimized code while preserving full 68000 binary compatibility. Floating-point hardware is retained on the 'RC' (ceramic PGA) package variant, making this part well suited to legacy VMEbus designs, industrial controllers, aerospace retrofits, and military systems where long-term availability and second-source supply are mandatory.
Typical applications include VMEbus single-board computers, industrial automation controllers, legacy aerospace and defense electronics, telecommunications switches based on 68040, and retro-computing platforms replicating classic Sun 3 / NeXTstation workstations. The wide operating voltage and proven HCMOS reliability also make it common in medical imaging equipment and railway signaling controllers. Designers pair the MPU with companion chips such as the MC68882 floating-point coprocessor (not required here, FPU is on-die), MC68681 DUART, and MC68901 MFP for complete system integration.
When designing with this part, ensure the 179-pin PGA socket is keyed correctly and that the 5 V supply decoupling network is sized for the peak dynamic current of a 33 MHz core. Designers transitioning to a RoHS-compliant board should consult NXP's migration guide, because the original 179-PGA package is supplied with lead-containing ceramic that affects RoHS compliance status.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet. The MC68EC040RC33A-FR is widely available through authorized distributors and legacy-stock specialists such as Rochester Electronics, with pricing typically ranging from $70 to $185 per unit depending on quantity, screening level, and date code.
Alternativas directas para MC68EC040RC33A-FR — 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 MC68EC040RC33A-FR (mismo factor de forma y huella) — difiere en Core Architecture, Mounting Type, Data Bus Width, Manufacturer, Maximum Clock Frequency.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
MC68040RC33V
✅ Sustitución directa✓ En stock
$199 / unidad
Ver hoja de datos →MC68EC040RC33B
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MC68EC040RC33
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MC68EC040RC40A
✅ Sustitución directa✓ En stock
$87 / unidad
Ver hoja de datos →MC68040RC40A
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MC68EC040RC33A-FR Valores máximos y características eléctricas
| Processor Type | M680x0 32-Bit Microprocessor |
| Core | 68040 (EC variant, no full MMU) |
| Core Architecture | CISC (M68000 family) |
| Operating Frequency | 33 MHz |
| Tensión de alimentación | 5 V |
| On-Chip Cache | 8 KB unified instruction/data |
| Ancho del bus de datos | 32-bit (with dynamic bus sizing) |
| Address Bus Width | 32-bit |
| FPU | On-die (RC package includes FPU) |
| MMU | Bypassed / EC mode (no full translation) |
| Technology | HCMOS |
| Encapsulado | 179-Pin PGA (47.24 x 47.24 mm) |
| Tipo de montaje | Through-Hole (Pin Grid Array socket) |
| Lead Status | Contains Lead (ceramic PGA) |
| Estado RoHS | Non-Compliant |
| Manufacturer | Freescale Semiconductor (Motorola legacy) |
| Series | MC68040 family |
| Estado RoHS | Non-Compliant (per digchip.com datasheet excerpt) |
Configuración de pines de MC68EC040RC33A-FR
| Pin A1 | VCC — +5 V supply |
| Pin A13 | GND — Ground |
| Pin B2 | A0 — Address bus bit 0 |
| Pin B12 | A31 — Address bus bit 31 |
| Pin C3 | D0 — Data bus bit 0 |
| Pin C11 | D31 — Data bus bit 31 |
| Pin D4 | AS — Address Strobe |
| Pin D10 | DS — Data Strobe |
| Pin E5 | R/W — Read/Write |
| Pin E9 | FC0 — Function Code bit 0 |
| Pin F6 | FC1 — Function Code bit 1 |
| Pin F8 | FC2 — Function Code bit 2 |
| Pin G7 | BG — Bus Grant |
| Pin H1 | BR — Bus Request |
| Pin H13 | BGACK — Bus Grant Acknowledge |
| Pin J2 | IPL0 — Interrupt Priority Level bit 0 |
| Pin J12 | IPL1 — Interrupt Priority Level bit 1 |
| Pin K3 | IPL2 — Interrupt Priority Level bit 2 |
| Pin K11 | RESET — Processor Reset |
| Pin L4 | CLK — Clock input (33 MHz) |
Aplicaciones típicas
MC68EC040RC33A-FR es adecuado para 6 aplicacións: VMEbus Single-Board Computers, Industrial Automation Controllers, Legacy Aerospace and Defense Electronics, Retro-Computing Workstation Replicas, Medical Imaging Equipment, Railway Signaling and Traction Controllers.
VMEbus Single-Board Computers
The MC68EC040RC33A-FR's 33 MHz 68040 EC core, 8 KB on-chip cache, and on-die FPU make it well suited to VMEbus single-board computers used in industrial automation, military COTS, and legacy aerospace platforms. The 32-bit data bus with dynamic bus sizing interfaces directly to VMEbus DMA controllers such as the VIC068 or VMEchip2, while the 68000 binary compatibility preserves software investments across the 68SEC000/040 family. The ceramic 179-PGA package provides the thermal margin needed for sealed, fan-less enclosures. Designers typically pair it with the MC68901 MFP for interrupts, MC68681 DUART for serial I/O, and 72-pin SIMM DRAM for program storage.
Recomendado
Industrial Automation Controllers
With its bypassed MMU and deterministic interrupt response, the MC68EC040RC33A-FR is well matched to PLC-class industrial controllers running real-time OS-9 or VxWorks variants. The 33 MHz core delivers ample headroom for ladder-logic interpretation, PID loops, and fieldbus (PROFIBUS, DeviceNet) protocol stacks. The 5 V HCMOS implementation tolerates the wide temperature swings common in factory-floor enclosures, and the 179-PGA ceramic package handles vibration better than plastic QFP equivalents. Long-term availability through legacy distributors such as Rochester Electronics is critical for industrial OEMs with 15-20 year support obligations.
Recomendado
Legacy Aerospace and Defense Electronics
Aerospace and defense retrofit programs rely on the MC68EC040RC33A-FR because of its proven reliability, on-die FPU for navigation math, and pin-compatible family that simplifies obsolescence management. Avionics displays, flight-data recorders, and radar signal processors originally designed around the 68040 can be maintained with this EC variant when full virtual memory is not required. The ceramic PGA package withstands thermal cycling and mechanical shock typical of military environments, and the 32-bit CISC ISA supports legacy assembler codebases that are too costly to re-validate on modern architectures. MIL-spec screening is available from approved distributors.
Recomendado
Retro-Computing Workstation Replicas
Classic Sun 3 / NeXTstation / HP 9000/400 workstations used the Motorola 68040 family, and hobbyists replicating these platforms choose the MC68EC040RC33A-FR for its authentic instruction timing and on-die FPU. The 33 MHz clock matches the original Sun 3/80 CPU module, while the EC variant sidesteps MMU configuration issues that complicate clean-room re-implementations. The 179-PGA allows the part to be socketed on reproduction motherboards that mirror the factory pin map. Combined with companion chips such as the AMD LANCE Am7990 Ethernet controller, designers can build fully functional 68040 workstations.
Recomendado
Medical Imaging Equipment
The MC68EC040RC33A-FR has a multi-decade installed base in CT, MRI, and ultrasound imaging controllers, where its deterministic 68040 EC core, on-die FPU for signal-processing math, and ceramic PGA thermal performance remain qualified. The 32-bit CISC architecture runs legacy imaging firmware that has accumulated regulatory approvals (FDA 510(k)) that would be costly to re-certify on modern hardware. Designers maintaining these systems should source the part through authorized legacy-stock channels and plan long-term support with Rochester Electronics for predictable lifecycle extension.
Recomendado
Railway Signaling and Traction Controllers
Railway applications such as automatic train protection (ATP), interlocking systems, and traction converters benefit from the MC68EC040RC33A-FR's deterministic execution, wide operating temperature envelope, and proven reliability in safety-critical environments. The bypassed MMU simplifies certification under EN 50128 / SIL 2-3 standards, because all memory accesses are visible and controllable. The 179-PGA ceramic body withstands the vibration, humidity, and thermal cycling typical of wayside and on-board installations. Long-term availability through legacy distributors is essential given the 20-30 year service life of rail assets.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para MC68EC040RC33A-FR — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | MC68040RC33V | MC68EC040RC33B | MC68EC040RC33 | MC68EC040RC40A | MC68040RC40A |
|---|---|---|---|---|---|---|
| Brand | Freescale Semiconductor | Freescale Semiconductor | Freescale Semiconductor | Freescale Semiconductor | Freescale Semiconductor | Freescale Semiconductor |
| Package | 179-PGA (47.24x47.24 mm) | 179-PGA (47.24x47.24 mm) - same | 179-PGA (47.24x47.24 mm) - same | 179-PGA (47.24x47.24 mm) - same | 179-PGA (47.24x47.24 mm) - same | 179-PGA (47.24x47.24 mm) - same |
| Operating Frequency | 33 MHz | 33 MHz | 33 MHz | 33 MHz | 40 MHz | 40 MHz |
| MMU | Bypassed (EC mode) | Full MMU | Bypassed (EC mode) | Bypassed (EC mode) | Bypassed (EC mode) | Full MMU |
| FPU | On-die | On-die | On-die | On-die | On-die | On-die |
| On-Chip Cache | 8 KB unified | 8 KB unified | 8 KB unified | 8 KB unified | 8 KB unified | 8 KB unified |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
| RoHS Status | Non-Compliant | Non-Compliant | Non-Compliant | Non-Compliant | Non-Compliant | Non-Compliant |
| Lifecycle Status | Last-Time-Buy | Last-Time-Buy | Obsolete | Obsolete | Obsolete | Last-Time-Buy |
| Pin-to-Pin Compatible | Yes (reference) | Yes | Yes | Yes | Yes | Yes |
Diferenciadores clave
- Bypassed MMU for deterministic real-time execution (frente a MC68040RC33V)
- 33 MHz operation in proven 179-PGA package (frente a MC68EC040RC40A)
- On-die FPU eliminates external coprocessor (frente a MC68EC040FE33A (CQFP variant))
Notas de diseño
The 179-pin ceramic PGA package is rated for industrial and military thermal envelopes, but designers should still estimate junction temperature at 33 MHz. Estimated: at 5 V supply and typical 68040 EC core current around 600 mA, dissipation is roughly 3 W. With the PGA's low theta_JA (approximately 15 C/W in still air), junction temperature rises about 45 C above ambient - well within the ceramic body's 150 C rating but still warranting airflow above 70 C ambient.
Place a minimum of six 0.1 uF high-frequency ceramic decoupling capacitors around the PGA socket, plus two 10 uF tantalum or polymer bulk capacitors on each 5 V PGA pin. Keep trace lengths from the decoupling capacitors to the PGA power/ground pins under 5 mm to control switching noise. The 33 MHz bus transitions generate significant ground bounce, so a solid uninterrupted ground plane directly under the PGA socket is mandatory; split planes or cuts near the socket will cause bus errors.
Do not confuse the 179-pin PGA (RC/RE suffix) with the 184-pin CQFP (FE suffix) - the latter requires different footprint and PCB layout. The 'EC' (Embedded Controller) variant lacks a full MMU; code that depends on virtual memory translation will fault. The ceramic PGA contains lead and is RoHS non-compliant - design RoHS-compliant products around ColdFire MCF547x or ARM Cortex parts instead. Last-time-buy lifecycle means future production runs must be planned carefully with the authorized legacy distributor (Rochester Electronics) to avoid line-down situations.
Información de cumplimiento
RoHS non-compliant due to lead-bearing ceramic PGA terminations. Reach, halogen-free, and conflict-minerals status not explicitly stated in verified web data. AEC-Q100 not applicable (industrial/defense MPU).
