MC68020CRC25E - 25MHz 32-Bit M68020 MPU | NXP | 114-PGA
Référence : MC68020CRC25E ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $145 | $145,00 |
| 10 | $132 | $1 320,00 |
| 100 | $118.5 | $11 850,00 |
| 500 | $105 | $52 500,00 |
| 1 000 | $92 | $92 000,00 |
MC68020CRC25E Présentation
The MC68020 belongs to the M68000 (M68K) family of CISC microprocessors, a lineage that originated with the Motorola 68000 in 1979. The M68020 introduced a true 32-bit internal architecture with a 32-bit data bus, 32-bit address bus, instruction cache, and a coprocessor interface. This places the MC68020 in the broader taxonomy of: microprocessor -> 32-bit MPU -> CISC MPU -> M68000 family -> M68020 generation. The MC68020 was historically used in workstations, laser printers, industrial controllers, and embedded aerospace/defense systems.
Key features of the MC68020CRC25E include: 25 MHz clock frequency, 32-bit data and address buses, 4-byte (32-bit) instruction prefetch queue, on-chip instruction cache, hardware multiply and divide, eight 32-bit general-purpose data registers, eight 32-bit address registers, and a coprocessor interface supporting the MC68881/MC68882 floating-point units. The 114-pin PGA package provides robust mechanical and thermal performance required for military and aerospace applications.
The architecture uses a memory management unit (MMU) for virtual memory support and offers enhanced addressing modes versus earlier M68K processors. The 25 MHz speed grade was a mainstream variant, with instruction timing measured in clock cycles (typically 3 cycles for a register move). Power is supplied from a single 5V rail, consistent with the M68K family standard. The device is fully static and supports both synchronous and asynchronous bus operation.
Typical applications include legacy industrial control systems, military/aerospace embedded computing, telecommunications switching equipment, VMEbus single-board computers, and replacement/maintenance of legacy M68K-based designs. The 114-PGA package is intended for through-hole socket mounting, making it serviceable in long-lifecycle programs.
When designing with the MC68020CRC25E, note that this is a legacy/obsolete part suitable only for sustaining-engineering and existing-platform maintenance. Modern designs should consider ARM-based replacements such as NXP's i.MX RT series, which offer vastly higher performance and lower power while preserving similar bus-style interfaces. The PGA package requires a matching PGA socket for PCB mounting, increasing assembly cost.
Alternatives de remplacement direct pour MC68020CRC25E — 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 MC68020CRC25E (même facteur de forme et même empreinte) — différant par Address Bus Width, Architecture, Clock Speed, Coprocessor Interface, Data Bus Width.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
MC68020RC25E
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC68020CRC33E
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC68020CRC20E
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC68020RC20E
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC68020CRC16E
✅ Remplacement direct✓ En stock
$98.5 / unité
Voir la fiche technique →MC68EC020RC25E
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC68020CRC25E Valeurs maximales et caractéristiques électriques
| Processor Type | M680x0 32-Bit Microprocessor |
| Core Count | 1 |
| Largeur du bus de données | 32 bit |
| Address Bus Width | 32 bit |
| Clock Speed | 25 MHz |
| Tension d'alimentation | 5 V |
| Boîtier / Format | 114-BPGA (34.55 x 34.55 mm) |
| Type de montage | Through Hole (PGA socket) |
| Operating Temperature Grade | Extended (suffix E) |
| Architecture | CISC, M68020 core |
| On-Chip Cache | Instruction cache (256 byte) |
| Coprocessor Interface | Yes (MC68881/MC68882 FPU support) |
| MMU Support | Yes (external MC68851) |
| Packaging | Tray |
| Lead Free Status | Lead Free |
| Statut RoHS | RoHS Compliant |
Configuration des broches de MC68020CRC25E
| Broche A1 | D17 — Data bus bit 17 |
| Broche A2 | D19 — Data bus bit 19 |
| Broche A3 | D20 — Data bus bit 20 |
| Broche A4 | D22 — Data bus bit 22 |
| Broche A5 | D24 — Data bus bit 24 |
| Broche A6 | D26 — Data bus bit 26 |
| Broche A7 | D28 — Data bus bit 28 |
| Broche A8 | D30 — Data bus bit 30 |
| Broche A9 | GND — Ground |
| Broche A10 | A1 — Address bus bit 1 |
| Broche A11 | A3 — Address bus bit 3 |
| Broche A12 | A5 — Address bus bit 5 |
| Broche A13 | A7 — Address bus bit 7 |
| Broche B1 | D16 — Data bus bit 16 |
| Broche B2 | D18 — Data bus bit 18 |
| Broche B3 | D21 — Data bus bit 21 |
| Broche B4 | D23 — Data bus bit 23 |
| Broche B5 | D25 — Data bus bit 25 |
| Broche B6 | D27 — Data bus bit 27 |
| Broche B7 | D29 — Data bus bit 29 |
| Broche B8 | D31 — Data bus bit 31 |
| Broche B9 | VCC — +5V supply |
| Broche B10 | A0 — Address bus bit 0 |
| Broche B11 | A2 — Address bus bit 2 |
| Broche B12 | A4 — Address bus bit 4 |
| Broche B13 | A6 — Address bus bit 6 |
Applications typiques
MC68020CRC25E convient pour 6 applications: Legacy VMEbus Single-Board Computers, Military and Aerospace Embedded Computing, Industrial Process Control Systems, Telecommunications Switching Equipment, High-Resolution Laser Printer Controllers, Medical Diagnostic Imaging Systems.
Legacy VMEbus Single-Board Computers
The MC68020CRC25E was the workhorse processor for VMEbus single-board computers (SBCs) throughout the 1990s. Its 32-bit data and address buses, DMA-friendly bus arbitration (BR/BG/BBG), and 25 MHz clock delivered sufficient compute for industrial control and aerospace SBCs. The 114-PGA ceramic package was standard for VME processor modules, providing reliable through-hole socketing for field-replaceable units. Sustaining-engineering programs in defense and process control continue to require this part. Replacement MC68020RC25E parts are drop-in for the same 114-PGA socket. VME SBC companion chips include the MC68851 MMU and MC68881/MC68882 FPU for full virtual-memory and floating-point support.
Recommandé
Military and Aerospace Embedded Computing
The MC68020CRC25E with extended-temperature grade ('E' suffix) was qualified into numerous military and aerospace embedded computing platforms. Its 114-ceramic-PGA package withstands thermal cycling, vibration, and conformal coating common in avionics. Programs such as the F-16 Mission Computer, the Patriot missile system, and various radar signal processors used the MC68020 family. Its 5V supply, predictable interrupt latency, and full 32-bit address space made it suitable for real-time control and signal processing. Modern replacements require extensive re-qualification, so the MC68020CRC25E remains in sustainment programs worldwide. Companion parts include MIL-STD-1553 databus interfaces and radiation-hardened memory.
Recommandé
Industrial Process Control Systems
The MC68020CRC25E powered programmable logic controller (PLC) CPUs, distributed control system (DCS) controllers, and human-machine interface (HMI) platforms throughout the late 1980s and 1990s. Its 25 MHz clock, MMU-enabled virtual memory, and 32-bit arithmetic supported ladder-logic execution, PID control, and operator-interface rendering in real time. Major automation vendors (Allen-Bradley/Rockwell, ABB, Siemens) used the MC68020 in flagship PLC CPUs. The 114-PGA ceramic package provides long-term reliability in factory environments with temperature swings, dust, and vibration. Sustainment programs require this part for legacy plant equipment where modernization would require re-validation.
Recommandé
Telecommunications Switching Equipment
The MC68020CRC25E was deployed in central-office telephone switches, PBX systems, and digital cross-connect equipment during the early digital telecom era. Its deterministic interrupt handling, ample 4 GB address space, and support for memory-mapped I/O made it well-suited to switching fabrics and call-processing software. The extended-temperature grade supports the temperature-controlled but vibration-prone central-office environment. The 114-PGA package was preferred for its field-replaceable socket design. Sustainment programs at major telcos continue to require the MC68020CRC25E for legacy Class-5 switches where replacement would require regulatory re-certification.
Recommandé
High-Resolution Laser Printer Controllers
The MC68020CRC25E powered the raster image processor (RIP) controllers in high-end laser printers and typesetters from manufacturers such as Adobe, HP, and Linotype. Its 32-bit datapath handled bitmap manipulation for 600+ dpi rendering at full-page speeds, while the on-chip instruction cache and 25 MHz clock sustained real-time page rasterization. The MC68881/MC68882 FPU accelerated font hinting and PostScript transform computations. The 114-PGA package suited the high-end commercial printer market where reliability and serviceability were paramount. Sustainment programs for legacy print-on-demand equipment continue to source the MC68020CRC25E.
Recommandé
Medical Diagnostic Imaging Systems
The MC68020CRC25E was used in medical imaging modalities such as CT scanners, MRI controllers, and ultrasound systems where real-time image reconstruction and operator-interface rendering required 32-bit processing. Its deterministic bus cycle timing and predictable interrupt latency were critical for synchronized data acquisition. The 114-ceramic-PGA package and extended-temperature grade suited the high-availability, long-lifecycle requirements of medical equipment. Sustainment programs at hospitals and OEMs continue to require this part for installed-base imaging systems. FDA re-validation costs discourage modernization, sustaining demand for the MC68020CRC25E.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour MC68020CRC25E — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | MC68020RC25E | MC68020CRC33E | MC68020CRC20E | MC68020RC20E | MC68EC020RC25E |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 114-BPGA (34.55x34.55) | 114-BPGA (34.55x34.55) - same | 114-BPGA (34.55x34.55) - same | 114-BPGA (34.55x34.55) - same | 114-BPGA (34.55x34.55) - same | 114-BPGA (34.55x34.55) - same |
| Clock Speed | 25 MHz | 25 MHz | 33 MHz | 20 MHz | 20 MHz | 25 MHz |
| Data Bus Width | 32 bit | 32 bit | 32 bit | 32 bit | 32 bit | 32 bit |
| Address Bus Width | 32 bit | 32 bit | 32 bit | 32 bit | 32 bit | 32 bit |
| Coprocessor Interface | Yes (MC68881/MC68882) | Yes | Yes | Yes | Yes | No (EC variant) |
| On-Chip Instruction Cache | 256 byte | 256 byte | 256 byte | 256 byte | 256 byte | 256 byte |
| Operating Voltage | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
| Temperature Grade (E suffix) | Extended | Not explicitly E | Extended | Extended | Not explicitly E | Extended |
Principaux différenciateurs
- Explicit extended-temperature grade designation (E) on the MPN (vs MC68020RC25E)
- Same-package upgrade path to 33 MHz without redesign (vs MC68020CRC33E)
- Mainstream M68K performance tier with full coprocessor support (vs MC68EC020RC25E)
Notes de conception
Estimated: At 25 MHz with 5 V supply, the MC68020CRC25E dissipates approximately 1.5 W to 2.0 W (no datasheet figure provided). The 114-pin ceramic PGA package provides good thermal conduction via its through-hole pin grid; no external heatsink is needed. Ensure chassis airflow keeps the PGA junction below 100C in extended-grade designs. Forced-air cooling is recommended when ambient exceeds 50C. The ceramic body provides low thermal resistance to the PCB copper pour beneath the socket.
The 114-PGA package requires a 115-position PGA socket on the PCB (pin A1 keyed). Use a machine-pin socket for field-replaceable service. Provide a continuous ground/power plane beneath the socket for low-impedance VCC/GND distribution. Route the 32-bit data and address buses in matched-length groups to minimize bus skew. The 5 V supply should be decoupled with 0.1 uF ceramic capacitors near each VCC pin group and a bulk 10 uF tantalum at the socket edge.
Do not confuse the MC68020CRC25E with the MC68030CRC25C (different generation with on-chip data cache). Verify bus cycle timing against the MC68020 User's Manual (MC68020UM.pdf) section on asynchronous vs synchronous operation. When using the MC68851 MMU, ensure translation tables are initialized before enabling address translation. The coprocessor interface for MC68881/MC68882 requires correct reset sequencing; both must be reset together.
Informations de conformité
RoHS compliant per DigChip listing for the Rochester Electronics variant. REACH compliance, halogen-free status, and conflict-minerals status were not stated in the verified web data. AEC-Q100 not applicable (this is an MPU, not an automotive analog IC).
