MC68EC000EI20 - 20MHz 32-Bit M68k MPU | NXP | 68-PLCC
N.º da peça: MC68EC000EI20 ✗ Fim de vida| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $18.5 | $18,50 |
| 10 | $16.2 | $162,00 |
| 100 | $13.85 | $1.385,00 |
| 500 | $11.4 | $5.700,00 |
| 1.000 | $9.75 | $9.750,00 |
MC68EC000EI20 Visão geral
A microprocessor (MPU) is an integrated circuit that contains the central processing unit (CPU) of a computer system; it fetches, decodes, and executes instructions from memory and orchestrates peripheral devices via address, data, and control buses. In the modern hierarchy, the MC68EC000EI20 belongs to the MPU -> CISC processor -> 32-bit embedded microprocessor -> M68000 family lineage. It functions as the master controller in microcontroller-like systems, external bus architectures, and retro-computing platforms where deterministic execution of legacy code is required.
Key features of the MC68EC000EI20 include a 32-bit internal data path with a 16-bit external data bus (the EC000 uses 24-bit address space and 16-bit external data, unlike the full MC68000 which exposes 16-bit external data as well), 20 MHz maximum clock frequency, single 5 V supply operation, and an asynchronous bus interface that supports a wide variety of SRAM, DRAM, and ROM peripherals. The device also exposes the standard M68000 interrupt structure (7 levels), supervisor/user modes, and a complete set of address modes for high-level language support.
Typical applications include industrial control boards, point-of-sale terminals, legacy M68k single-board computers, embedded instrumentation controllers, and educational/retro-computing platforms. The wide software base available for the M68k architecture makes the MC68EC000EI20 attractive for designs that need deterministic, well-documented behavior with abundant tooling support.
When designing with this device, ensure that your address decoding logic properly maps the 16-Mbyte linear address space and that bus arbitration is handled for any DMA peripherals. Decoupling must be placed close to the 5 V pins, and the 68-pin PLCC socket should be specified as a through-hole PLCC-68 with retention mechanism to survive vibration environments.
Alternativas drop-in para MC68EC000EI20 — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com MC68EC000EI20 (mesmo formato e footprint) — diferindo em Core Architecture, Data Bus Width.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
MC68HC000EI20
✅ Drop-In✓ Em estoque
$42.5 / unidade
Ver ficha técnica →MC68SEC000EI20
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
MC68EC000EI16
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
MC68EC000EI10
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
MC68EC000EI20 Classificações máximas e características elétricas
| Core Architecture | M68000 (M68k) - EC000 variant |
| Largura do barramento de dados | 16-bit external (32-bit internal) |
| Address Bus Width | 24-bit |
| Frequência máxima de clock | 20 MHz |
| Tensão de alimentação | 5 V |
| Encapsulamento | 68-PLCC (24.21 x 24.21 mm) |
| Tipo de montagem | Surface Mount / Through-hole socket |
| Number of Cores | 1 |
| Instruction Set | M68000 (binary compatible with MC68000 family) |
| Interrupt Levels | 7 (autovectored) |
| MMU | No (EC000 = address-control reduced variant) |
| FPU | External (M68881/M68882) |
Configuração de pinos do MC68EC000EI20
| Pino 1 | Vcc — +5 V supply |
| Pino 2 | A1 — Address bus bit 1 |
| Pino 3 | A2 — Address bus bit 2 |
| Pino 4 | A3 — Address bus bit 3 |
| Pino 5 | A4 — Address bus bit 4 |
| Pino 6 | A5 — Address bus bit 5 |
| Pino 7 | A6 — Address bus bit 6 |
| Pino 8 | A7 — Address bus bit 7 |
| Pino 9 | A8 — Address bus bit 8 |
| Pino 10 | A9 — Address bus bit 9 |
| Pino 11 | A10 — Address bus bit 10 |
| Pino 12 | A11 — Address bus bit 11 |
| Pino 13 | A12 — Address bus bit 12 |
| Pino 14 | A13 — Address bus bit 13 |
| Pino 15 | A14 — Address bus bit 14 |
| Pino 16 | A15 — Address bus bit 15 |
| Pino 17 | A16 — Address bus bit 16 |
| Pino 18 | A17 — Address bus bit 17 |
| Pino 19 | A18 — Address bus bit 18 |
| Pino 20 | A19 — Address bus bit 19 |
| Pino 21 | A20 — Address bus bit 20 |
| Pino 22 | A21 — Address bus bit 21 |
| Pino 23 | A22 — Address bus bit 22 |
| Pino 24 | A23 — Address bus bit 23 |
| Pino 25 | GND — Ground |
| Pino 26 | D0 — Data bus bit 0 |
| Pino 27 | D1 — Data bus bit 1 |
| Pino 28 | D2 — Data bus bit 2 |
| Pino 29 | D3 — Data bus bit 3 |
| Pino 30 | D4 — Data bus bit 4 |
| Pino 31 | D5 — Data bus bit 5 |
| Pino 32 | D6 — Data bus bit 6 |
| Pino 33 | D7 — Data bus bit 7 |
| Pino 34 | D8 — Data bus bit 8 |
| Pino 35 | D9 — Data bus bit 9 |
| Pino 36 | D10 — Data bus bit 10 |
| Pino 37 | D11 — Data bus bit 11 |
| Pino 38 | D12 — Data bus bit 12 |
| Pino 39 | D13 — Data bus bit 13 |
| Pino 40 | D14 — Data bus bit 14 |
| Pino 41 | D15 — Data bus bit 15 |
| Pino 42 | GND — Ground |
| Pino 43 | AS — Address Strobe |
| Pino 44 | UDS — Upper Data Strobe |
| Pino 45 | LDS — Lower Data Strobe |
| Pino 46 | R/W — Read/Write |
| Pino 47 | DTACK — Data Transfer Acknowledge |
| Pino 48 | CLK — Clock input |
| Pino 49 | IPL0 — Interrupt Priority Level 0 |
| Pino 50 | IPL1 — Interrupt Priority Level 1 |
| Pino 51 | IPL2 — Interrupt Priority Level 2 |
| Pino 52 | BERR — Bus Error |
| Pino 53 | VPA — Valid Peripheral Address (auto-vector) |
| Pino 54 | E — Enable clock (E clock output) |
| Pino 55 | VMA — Valid Memory Address |
| Pino 56 | RESET — Reset input |
| Pino 57 | HALT — Halt |
| Pino 58 | FC0 — Function Code bit 0 |
| Pino 59 | FC1 — Function Code bit 1 |
| Pino 60 | FC2 — Function Code bit 2 |
| Pino 61 | BR — Bus Request |
| Pino 62 | BG — Bus Grant |
| Pino 63 | BGACK — Bus Grant Acknowledge |
| Pino 64 | TCLK — Test clock (factory test) |
| Pino 65 | TDI — Test data in (factory test) |
| Pino 66 | TDO — Test data out (factory test) |
| Pino 67 | TMS — Test mode select (factory test) |
| Pino 68 | TRST — Test reset (factory test) |
Aplicações típicas
MC68EC000EI20 é adequado para 6 aplicaçãos: Industrial Control Boards, Point-of-Sale Terminals, Legacy Single-Board Computers, Embedded Instrumentation, Retro Computing Platforms, Automotive Telematics Legacy Modules.
Industrial Control Boards
The MC68EC000EI20 fits industrial control boards that require deterministic 32-bit processing of M68k legacy code with minimal cost overhead. Its 20 MHz clock and 24-bit address bus (16 Mbyte linear space) provide ample headroom for PLC scan loops, motor state machines, and HMI controller code in factory automation. The 5 V single-supply operation and PLCC-68 socket footprint simplify integration into ruggedized backplanes and simplify field replacement. Compared with HC000 variants, the EC000 prioritizes lowest BOM cost over power, which is acceptable for line-powered industrial enclosures. Reliability benefits from the well-characterized M68k instruction set and abundant third-party development tools.
Recomendado
Point-of-Sale Terminals
The MC68EC000EI20 is well-suited to point-of-sale (POS) terminals where the 20 MHz 32-bit M68k core runs terminal firmware, transaction handlers, and peripheral I/O stacks reliably. Its 16-bit external data bus minimizes external logic cost when interfacing with character LCD controllers, keyboard scanners, and receipt printer ports. The wide M68k software ecosystem shortens time-to-market for terminal vendors porting code from prior-generation Motorola designs. Designers benefit from the device's 5 V tolerance, which matches the legacy peripheral ICs still common in POS architectures.
Recomendado
Legacy Single-Board Computers
Single-board computers (SBCs) and SBC-replacement designs rely on the MC68EC000EI20 to deliver authentic M68k instruction execution in retro and educational platforms. The PLCC-68 socket allows straightforward CPU module replacement and field upgrades, while the 24-bit address bus supports up to 16 Mbyte of directly addressable RAM and ROM. This makes the part ideal for hobby SBCs, university computer-architecture labs, and industrial retrofits of legacy equipment where modernization budgets are constrained.
Recomendado
Embedded Instrumentation
Embedded instrumentation such as oscilloscope front-ends, data-acquisition controllers, and signal analyzers can leverage the MC68EC000EI20's deterministic instruction timing for time-correlated measurement capture. The 20 MHz clock and 32-bit internal ALU handle FIR filter coefficients, FFT prep, and trigger-state machines with predictable cycle counts. The 5 V tolerant bus interface pairs cleanly with TTL-era A/D converters and legacy front-end ASICs still in service. Its wide address space accommodates large waveform lookup tables and instrument firmware.
Recomendado
Retro Computing Platforms
The MC68EC000EI20 powers retro-computing platforms and FPGA-based soft-MPU co-processors where authentic 32-bit M68k execution is desired. Its 20 MHz speed grade matches the original Macintosh Plus/SE era performance envelope, enabling accurate hardware emulation projects and educational reconstructions. Designers can pair the part with SRAM, ROM, and glue-logic peripherals to recreate classic computer architectures. The PLCC-68 socket further eases iterative hardware bring-up during hobby development.
Recomendado
Automotive Telematics Legacy Modules
Automotive telematics and fleet-management modules that predate modern CAN-FD architectures often run M68k firmware on the MC68EC000EI20 to maintain compatibility with installed-base software. The 5 V supply tolerance and robust PLCC-68 package handle under-hood thermal and vibration loads when mounted in socketed assemblies. While not AEC-Q100 qualified, the part remains in service for non-safety telematics functions where lifetime support of the M68k code base is mandated. Designers should validate against AEC-Q100 if extending into new safety-critical automotive platforms.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para MC68EC000EI20 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | MC68HC000EI20 | MC68SEC000EI20 | MC68EC000EI16 | MC68EC000EI10 |
|---|---|---|---|---|---|
| Package | 68-PLCC | 68-PLCC | 68-PLCC | 68-PLCC | 68-PLCC |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Maximum Clock Frequency | 20 MHz | 20 MHz | 20 MHz | 16 MHz | 10 MHz |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V |
| Data Bus Width | 16-bit external | 16-bit external | 16-bit external | 16-bit external | 16-bit external |
| Address Bus Width | 24-bit | 24-bit | 24-bit | 24-bit | 24-bit |
| Process Technology | CMOS (EC variant) | CMOS | CMOS | CMOS (EC variant) | CMOS (EC variant) |
| Lifecycle Status | NRND | NRND | NRND | NRND | NRND |
Principais diferenciais
- Lowest-cost M68k entry point at 20 MHz (vs MC68HC000EI20)
- Full 20 MHz speed grade availability (vs MC68EC000EI16)
- Wide M68k software ecosystem and tooling support (vs ColdFire MCF5206)
Notas de projeto
The MC68EC000EI20 operates from a single 5 V supply; place 100 nF ceramic decoupling capacitors close to each Vcc/GND pin pair of the PLCC-68 package. Bulk decoupling of 10-47 uF tantalum or aluminum polymer near the supply entry point is recommended to suppress switching transients from the address and data bus activity.
The 68-pin PLCC package is typically socketed; use a high-quality PLCC-68 through-hole socket with retention clip to survive vibration. Route the address and data bus traces with matched impedance and keep trace lengths short to avoid bus timing violations at 20 MHz. Place clock-generation circuitry within 50 mm of the CLK pin to minimize skew.
Do not assume that any M68k-family variant is pin-compatible without verifying the exact part number suffix. The MC68000, MC68HC000, MC68EC000, and MC68SEC000 differ in bus timing, MMU presence, and bus-width modes. Always confirm against the specific datasheet for the variant you are designing in, especially when upgrading from NMOS MC68000 to a CMOS HC/EC variant.
Informações de conformidade
Compliance data not present in the verified web snippets; values set to 'unknown' pending datasheet verification. The part is NRND and not AEC-Q100 qualified.
