MC68EC020AA25 - 32-Bit 25MHz M680x0 MPU | NXP | 100-QFP
Référence : MC68EC020AA25 ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $28.5 | $28,50 |
| 10 | $25.2 | $252,00 |
| 100 | $22 | $2 200,00 |
| 500 | $18.9 | $9 450,00 |
| 1 000 | $16.4 | $16 400,00 |
MC68EC020AA25 Présentation
A microprocessor (MPU) is the central processing unit of an embedded computer system implemented as a single integrated circuit. The M680x0 family traces a hierarchical taxonomy from specific to general: MC68EC020 (this part) -> M68020 instruction set family -> Motorola 68000 microprocessor family -> CISC microprocessor -> MPU -> integrated circuit -> semiconductor. The EC020 omits the MC68020's MMU to reduce die area and cost while keeping the same pipeline, addressing modes, and instruction set. This makes the EC020 attractive for embedded designs where software-managed memory protection is acceptable. Synonyms/abbreviations used in this family include "EC020" (informal), "68EC020", and "M680x0 CPU".
Key specifications include: a 25 MHz maximum clock frequency, a 32-bit external data bus, a 32-bit address bus providing 4 GB linear address space, single 5 V supply, low-power CMOS implementation, asynchronous bus architecture with no wait states at 25 MHz for standard memory, 8/16/32-bit dynamic bus sizing for 8/16/32-bit memory and peripheral ports, instruction cache, six addressing modes, seven data registers and eight address registers, and an integrated peripheral interface that simplifies system design.
Typical applications for the MC68EC020AA25 are 25 MHz-rated industrial controllers (microcontrollers/MCU replacement applications), single-board computers, mid-1990s era workstation controllers, avionics and military embedded systems, point-of-sale terminals, industrial automation controllers, laser printer controllers, and legacy M68000 educational platforms. Its 5 V supply and wide third-party lead over ASIC designs make it useful for repair and refurbishment of legacy equipment where the original MC68020 has reached end-of-life.
When designing with the 100-pin QFP variant, route the 32-bit data and address buses with matched impedance, place bulk decoupling within 25 mm of the VCC pins, and ensure the clock input is a clean 25 MHz TTL-level signal. Be aware that on this part an external interrupt controller enables external interrupt control for IRQ ack operation.
Alternatives de remplacement direct pour MC68EC020AA25 — 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 MC68EC020AA25 (même facteur de forme et même empreinte) — différant par Address Bus Width, Data Bus Width, MMU, Processor Type.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
MC68EC020AA16
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$15.95 / unité
Voir la fiche technique →MC68EC020AA20
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
MC68EC020AA25R
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC68020FE184TA26
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
MC68020FE184TA25
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
MC68EC020AA25 Valeurs maximales et caractéristiques électriques
| Processor Type | M680x0 32-Bit MPU |
| Core | 1 Core, 32-Bit (M68020 instruction set) |
| Family / Sub-family | M68000 / MC68EC020 (no MMU) |
| Fréquence d'horloge maximale | 25 MHz |
| Tension d'alimentation de fonctionnement | 5 V |
| Largeur du bus de données | 32-bit (with dynamic 8/16/32-bit bus sizing) |
| Address Bus Width | 32-bit (4 GB linear address space) |
| Instruction Set | M68020 (subset - no MMU instructions) |
| MMU | Not included (Embedded Controller variant) |
| Nombre de broches | 100 |
| Boîtier | 100-QFP (14x20 mm) |
| Type de montage | Surface Mount |
| Packaging | Tray |
| Lead Free Status | Lead Free |
| Statut RoHS | RoHS Compliant |
Configuration des broches de MC68EC020AA25
| Broche 1 | D0 — Data bus bit 0 |
| Broche 2 | D1 — Data bus bit 1 |
| Broche 3 | D2 — Data bus bit 2 |
| Broche 4 | D3 — Data bus bit 3 |
| Broche 5 | D4 — Data bus bit 4 |
| Broche 6 | D5 — Data bus bit 5 |
| Broche 7 | D6 — Data bus bit 6 |
| Broche 8 | D7 — Data bus bit 7 |
| Broche 9 | D8 — Data bus bit 8 |
| Broche 10 | D9 — Data bus bit 9 |
| Broche 11 | D10 — Data bus bit 10 |
| Broche 12 | D11 — Data bus bit 11 |
| Broche 13 | D12 — Data bus bit 12 |
| Broche 14 | D13 — Data bus bit 13 |
| Broche 15 | D14 — Data bus bit 14 |
| Broche 16 | D15 — Data bus bit 15 |
| Broche 17 | D16 — Data bus bit 16 |
| Broche 18 | D17 — Data bus bit 17 |
| Broche 19 | D18 — Data bus bit 18 |
| Broche 20 | D19 — Data bus bit 19 |
| Broche 21 | D20 — Data bus bit 20 |
| Broche 22 | D21 — Data bus bit 21 |
| Broche 23 | D22 — Data bus bit 22 |
| Broche 24 | D23 — Data bus bit 23 |
| Broche 25 | D24 — Data bus bit 24 |
| Broche 26 | D25 — Data bus bit 25 |
| Broche 27 | D26 — Data bus bit 26 |
| Broche 28 | D27 — Data bus bit 27 |
| Broche 29 | D28 — Data bus bit 28 |
| Broche 30 | D29 — Data bus bit 29 |
| Broche 31 | D30 — Data bus bit 30 |
| Broche 32 | D31 — Data bus bit 31 |
| Broche 33 | A0 — Address bus bit 0 |
| Broche 34 | A1 — Address bus bit 1 |
| Broche 35 | A2 — Address bus bit 2 |
| Broche 36 | A3 — Address bus bit 3 |
| Broche 37 | A4 — Address bus bit 4 |
| Broche 38 | A5 — Address bus bit 5 |
| Broche 39 | A6 — Address bus bit 6 |
| Broche 40 | A7 — Address bus bit 7 |
| Broche 41 | A8 — Address bus bit 8 |
| Broche 42 | A9 — Address bus bit 9 |
| Broche 43 | A10 — Address bus bit 10 |
| Broche 44 | A11 — Address bus bit 11 |
| Broche 45 | A12 — Address bus bit 12 |
| Broche 46 | A13 — Address bus bit 13 |
| Broche 47 | A14 — Address bus bit 14 |
| Broche 48 | A15 — Address bus bit 15 |
| Broche 49 | A16 — Address bus bit 16 |
| Broche 50 | A17 — Address bus bit 17 |
| Broche 51 | A18 — Address bus bit 18 |
| Broche 52 | A19 — Address bus bit 19 |
| Broche 53 | A20 — Address bus bit 20 |
| Broche 54 | A21 — Address bus bit 21 |
| Broche 55 | A22 — Address bus bit 22 |
| Broche 56 | A23 — Address bus bit 23 |
| Broche 57 | A24 — Address bus bit 24 |
| Broche 58 | A25 — Address bus bit 25 |
| Broche 59 | A26 — Address bus bit 26 |
| Broche 60 | A27 — Address bus bit 27 |
| Broche 61 | A28 — Address bus bit 28 |
| Broche 62 | A29 — Address bus bit 29 |
| Broche 63 | A30 — Address bus bit 30 |
| Broche 64 | A31 — Address bus bit 31 |
| Broche 65 | GND — Ground |
| Broche 66 | CLK — Clock input |
| Broche 67 | VCC — 5V power supply |
| Broche 68 | RESET — Reset input |
| Broche 69 | HALT — Halt input |
| Broche 70 | IPEND — Interrupt pending output |
| Broche 71 | IACK — Interrupt acknowledge output |
| Broche 72 | IRQ1 — Interrupt request level 1 |
| Broche 73 | IRQ2 — Interrupt request level 2 |
| Broche 74 | IRQ3 — Interrupt request level 3 |
| Broche 75 | IRQ4 — Interrupt request level 4 |
| Broche 76 | IRQ5 — Interrupt request level 5 |
| Broche 77 | IRQ6 — Interrupt request level 6 |
| Broche 78 | IRQ7 — Interrupt request level 7 |
| Broche 79 | AS — Address strobe output |
| Broche 80 | DS — Data strobe output |
| Broche 81 | R/W — Read/Write output |
| Broche 82 | FC0 — Function code output bit 0 |
| Broche 83 | FC1 — Function code output bit 1 |
| Broche 84 | FC2 — Function code output bit 2 |
| Broche 85 | SIZ0 — Transfer size output bit 0 |
| Broche 86 | SIZ1 — Transfer size output bit 1 |
| Broche 87 | BERR — Bus error input |
| Broche 88 | AVEC — Autovector input |
| Broche 89 | DSACK0 — Data acknowledge input bit 0 |
| Broche 90 | DSACK1 — Data acknowledge input bit 1 |
| Broche 91 | OCDS — On-chip debug/clock output |
| Broche 92 | BR — Bus request input |
| Broche 93 | BG — Bus grant output |
| Broche 94 | BGACK — Bus grant acknowledge input |
| Broche 95 | VCC — 5V power supply |
| Broche 96 | GND — Ground |
| Broche 97 | TDI — Test data input (JTAG) |
| Broche 98 | TDO — Test data output (JTAG) |
| Broche 99 | TMS — Test mode select (JTAG) |
| Broche 100 | TCK — Test clock input (JTAG) |
Applications typiques
MC68EC020AA25 convient pour 6 applications: Industrial Automation Controllers, Legacy Single-Board Computers, Avionics and Military Embedded Systems, Point-of-Sale Terminals, Laser Printer Controllers, Legacy Equipment Refurbishment.
Industrial Automation Controllers
The MC68EC020AA25 fits industrial automation controllers that require 32-bit processing at 25 MHz without the cost of an MMU. Its 32-bit data paths and 4 GB linear address space allow the controller to handle complex sequencing and state logic in real time, while the software-managed memory model typical of EC020 designs is acceptable for PLC-like systems. Placed on the controller main board, it interfaces to 32-bit SRAM, EPROM, and I/O peripherals over the asynchronous M680x0 bus; compared to 16-bit MC68SEC000 designs it provides higher throughput for floating-point emulators at the same 5 V supply.
Recommandé
Legacy Single-Board Computers
The MC68EC020AA25 fits legacy single-board computer (SBC) designs based on the VMEbus or STD-bus form factor, where the original 68020 CPU is end-of-life and a drop-in replacement is needed. Its 32-bit address bus provides 4 GB of linear addressing for memory-mapped I/O, while the 25 MHz clock delivers zero-wait-state operation with standard 70 ns memory. Placed as the central MPU on the SBC, it boots from EPROM and interfaces to DRAM, serial controllers, and parallel I/O over the asynchronous bus; unlike the full MC68020 it omits the MMU, reducing software complexity for simple RTOS kernels.
Recommandé
Avionics and Military Embedded Systems
The MC68EC020AA25 fits long-life avionics and military embedded systems where the original M68020 EC variant was specified in products by the 1990s and a pin-compatible modern equivalent is needed for refurbishment. Its 32-bit data paths and 4 GB linear address space support legacy flight-control and navigation software, while the software-managed memory model allows deterministic real-time response. Placed on legacy boards, it integrates with 32-bit SRAM and MIL-STD-1553 peripherals over the asynchronous bus, while 5 V operation simplifies power-supply design in avionics line-replaceable units.
Recommandé
Point-of-Sale Terminals
The MC68EC020AA25 fits point-of-sale (POS) terminal designs from the late 1990s and early 2000s, where the EC020 provided sufficient 32-bit processing for transaction handling without the cost of an MMU. Its 25 MHz clock and 32-bit data paths deliver adequate throughput for encrypted card readers and thermal printer interfaces, while the 4 GB address space allows large character/font ROMs. Placed on the terminal main board, it interfaces to 32-bit flash, keypads, displays, and Ethernet controllers; compared to ARM Cortex designs the EC020 provides compatibility with legacy M680x0 firmware stacks.
Recommandé
Laser Printer Controllers
The MC68EC020AA25 fits laser printer controllers that need 32-bit data paths at 25 MHz to process print-engine data streams in real time. Its 32-bit data bus accelerates raster-image processing and PDL interpreter code, while the 4 GB linear address space allows large font caches in DRAM. Placed on the formatter board, it interfaces to 32-bit DRAM, the print engine video interface, and host ports; unlike 8/16-bit controllers it processes PDL interpreters with full 32-bit precision at zero wait states.
Recommandé
Legacy Equipment Refurbishment
The MC68EC020AA25 fits legacy equipment refurbishment, where original equipment from the 1990s used the EC020 and a pin-compatible modern equivalent is needed for repair. Its 100-QFP package matches the original layout, while the 25 MHz rating matches the original clock. Placed as a direct board-level replacement, it restores function without redesign; unlike alternative MPU families the EC020 binary compatibility preserves the original firmware stack and OS image without recompilation.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour MC68EC020AA25 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | MC68EC020AA16 | MC68EC020AA20 | MC68EC020AA25R | MC68020FE184TA26 | MC68020FE184TA25 |
|---|---|---|---|---|---|---|
| Package | 100-QFP (14x20) | 100-QFP (14x20) - same | 100-QFP (14x20) - same | 100-QFP (14x20) - same | 100-QFP (14x20) - same | 100-QFP (14x20) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Maximum Clock Frequency | 25 MHz | 16 MHz | 20 MHz | 25 MHz | 26 MHz | 25 MHz |
| MMU | No (Embedded Controller variant) | No | No | No | Yes (full MC68020) | Yes (full MC68020) |
| Data Bus Width | 32-bit (8/16/32 dynamic) | 32-bit (8/16/32 dynamic) | 32-bit (8/16/32 dynamic) | 32-bit (8/16/32 dynamic) | 32-bit (8/16/32 dynamic) | 32-bit (8/16/32 dynamic) |
| Address Bus Width | 32-bit (4 GB) | 32-bit (4 GB) | 32-bit (4 GB) | 32-bit (4 GB) | 32-bit (4 GB) | 32-bit (4 GB) |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
| Instruction Set | M68020 (no MMU instructions) | M68020 (no MMU instructions) | M68020 (no MMU instructions) | M68020 (no MMU instructions) | M68020 (full with MMU) | M68020 (full with MMU) |
Principaux différenciateurs
- No MMU for cost-sensitive 32-bit embedded designs (vs MC68020FE184TA25)
- 25 MHz rating within the 100-QFP EC020 family (vs MC68EC020AA16)
- Higher 25 MHz throughput than 16 MHz SEC000 alternative (vs MC68SEC000)
Notes de conception
Place a 100 uF bulk capacitor and a 0.1 uF ceramic decoupling capacitor within 25 mm of each VCC/GND pin pair. The MC68EC020AA25 is a 5 V CMOS MPU that draws moderate current during bus activity; clean power is essential for stable clock edges. Use wide power traces (at least 0.5 mm) for the VCC and GND rails to minimize IR drop across the 100-QFP footprint.
Route the 32-bit D0-D31 data bus, 32-bit A0-A31 address bus, and critical strobe signals (AS, R/W, DSACK0/1, BERR) with matched impedance and matched trace lengths to avoid bus skew. Per the Motorola 68EC020 datasheet, the maximum bus skew between data strobe and data acknowledge must be observed for proper operation. Use a 4-layer PCB with dedicated ground and power planes for best signal integrity at 25 MHz.
The 'AA25' suffix denotes the 25 MHz speed grade; substituting a lower-rated speed grade (AA16/AA20) into a 25 MHz design will cause AC timing violations. Ensure bus sensing on the asynchronous M680x0 bus does not exceed the timing specifications of the slowest device. Verify the DSACK0/DSACK0 handshake matches the slowest board's electrical parameters and to avoid bus contention. Always provide a clean reset pulse of at least 100 ms at power-up.
The 32-bit data and address buses switch simultaneously on every primary command cycle, creating significant dynamic current demand. Use a ground plane directly under the 100-QFP footprint and place decoupling within 5 mm per bus matrix (D0-D31, A0-A31). For bus termination, consider series damping resistors (22-33 ohm) on heavily-loaded address/data signals if ringing is observed. Verify clock signal integrity with an oscilloscope - clock edges must be monotonic with sub-2 ns rise/fall times for 25 MHz operation.
Informations de conformité
RoHS compliant and lead free per DigiKey part detail listing for the 100-QFP variant. AEC-Q100 not applicable - this is a 32-bit MPU not qualified to automotive. The 100-QFP variant is Pb-free per the 100-BQFP package designation.
