MC68020CRC25E - 25MHz 32-Bit M68020 MPU | NXP | 114-PGA
Артикул: MC68020CRC25E ✗ Снят с производства| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 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 Обзор
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.
Аналоги без доработки для MC68020CRC25E — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с MC68020CRC25E (тот же форм-фактор и посадочное место) — отличается по Address Bus Width, Architecture, Clock Speed, Coprocessor Interface, Data Bus Width.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
MC68020RC25E
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
MC68020CRC33E
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
MC68020CRC20E
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
MC68020RC20E
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
MC68020CRC16E
✅ Прямая замена✓ В наличии
$98.5 / шт.
Открыть даташит →MC68EC020RC25E
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
MC68020CRC25E Максимальные параметры и электрические характеристики
| Processor Type | M680x0 32-Bit Microprocessor |
| Core Count | 1 |
| Разрядность шины данных | 32 bit |
| Address Bus Width | 32 bit |
| Clock Speed | 25 MHz |
| Напряжение питания | 5 V |
| Корпус / Типоразмер | 114-BPGA (34.55 x 34.55 mm) |
| Тип монтажа | 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 |
| Статус RoHS | RoHS Compliant |
Конфигурация выводов MC68020CRC25E
| Контакт A1 | D17 — Data bus bit 17 |
| Контакт A2 | D19 — Data bus bit 19 |
| Контакт A3 | D20 — Data bus bit 20 |
| Контакт A4 | D22 — Data bus bit 22 |
| Контакт A5 | D24 — Data bus bit 24 |
| Контакт A6 | D26 — Data bus bit 26 |
| Контакт A7 | D28 — Data bus bit 28 |
| Контакт A8 | D30 — Data bus bit 30 |
| Контакт A9 | GND — Ground |
| Контакт A10 | A1 — Address bus bit 1 |
| Контакт A11 | A3 — Address bus bit 3 |
| Контакт A12 | A5 — Address bus bit 5 |
| Контакт A13 | A7 — Address bus bit 7 |
| Контакт B1 | D16 — Data bus bit 16 |
| Контакт B2 | D18 — Data bus bit 18 |
| Контакт B3 | D21 — Data bus bit 21 |
| Контакт B4 | D23 — Data bus bit 23 |
| Контакт B5 | D25 — Data bus bit 25 |
| Контакт B6 | D27 — Data bus bit 27 |
| Контакт B7 | D29 — Data bus bit 29 |
| Контакт B8 | D31 — Data bus bit 31 |
| Контакт B9 | VCC — +5V supply |
| Контакт B10 | A0 — Address bus bit 0 |
| Контакт B11 | A2 — Address bus bit 2 |
| Контакт B12 | A4 — Address bus bit 4 |
| Контакт B13 | A6 — Address bus bit 6 |
Типичное применение
MC68020CRC25E подходит для 6 применениеs: 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.
Рекомендуется
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.
Рекомендуется
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.
Рекомендуется
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.
Рекомендуется
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.
Рекомендуется
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.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для MC68020CRC25E — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | 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 |
Ключевые отличия
- Explicit extended-temperature grade designation (E) on the MPN (против MC68020RC25E)
- Same-package upgrade path to 33 MHz without redesign (против MC68020CRC33E)
- Mainstream M68K performance tier with full coprocessor support (против MC68EC020RC25E)
Заметки по проектированию
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.
Информация о соответствии
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).
