MC68HC000IEI16R - 16MHz 32-bit M68K MPU, 68-PLCC | NXP
Référence : MC68HC000IEI16R ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $57.98 | $57,98 |
| 10 | $48.5 | $485,00 |
| 100 | $39.2 | $3 920,00 |
| 500 | $31.75 | $15 875,00 |
| 1 000 | $27.4 | $27 400,00 |
MC68HC000IEI16R Présentation
What is a 32-bit MPU/M68000 microprocessor? An MPU (Microprocessor Unit) is an integrated processor that requires external memory and peripherals to form a complete computer system. The Motorola/NXP 68000 (M68K) family introduced a flat 32-bit programming model with 24-bit external address space, fifteen general-purpose 32-bit data registers, and eight 32-bit address registers, and is the architectural ancestor of the ColdFire family. The MC68HC000 variant is the original HCMOS (high-speed CMOS) implementation, balancing low power consumption with deterministic real-time interrupt handling, which made it the dominant embedded CPU of the 1980s and 1990s in industrial controllers, laser printers, telecom switches, and arcade systems.
Key features of the MC68HC000IEI16R include a 16 MHz maximum CPU clock yielding approximately 2 MIPS peak throughput, a 16-bit external data bus multiplexed onto the 32-bit internal register file, an asynchronous bus interface with DTACK handshaking that supports slow peripherals without glueless logic glue, a vectored interrupt controller with seven autovector levels and 256 programmable vectors, a supervisor/user privilege model with separate stack pointers, and instruction prefetch with a 4-byte queue. The device is a static-core design, allowing the clock to be stopped for low-power wait states.
Architecturally, the M68K ISA uses a flat non-segmented memory model, two-address orthogonally organized instruction set, and efficient bit-field operations including BCHG, BCLR, BSET, BTST, and TAS, which makes firmware development unusually compact. Compared to the original MC68000, the MC68HC000 reduces active current draw by roughly a factor of 5x thanks to HCMOS fabrication, while retaining object-code compatibility.
Typical applications include industrial PLC controllers, automotive engine management ECUs (legacy), telecom switching fabrics, point-of-sale terminals, medical instrumentation, military and aerospace embedded systems, vintage arcade/gaming hardware (Sega System 16/18, Amiga 500 early revs, Atari ST), and legacy upgrade/repair scenarios where original 68000 sockets must be repopulated. The wide third-party ecosystem of assemblers, compilers, RTOSes (pSOS, VRTX, OS-9), and emulators makes this part a familiar workhorse for maintenance engineers.
When designing with this MPU, observe the asynchronous bus termination rules: every memory cycle must assert DTACK or be aborted with BERR, otherwise the bus will hang. Add a watchdog timer or external supervisor to recover from bus faults, and pay attention to the 24-bit address space limit (16 MB), which constrains modern memory expansion.
This page synthesizes distributor pricing, cross-reference alternatives, and practical design notes that go beyond what is found in the manufacturer datasheet alone, helping sourcing engineers and maintenance designers evaluate the MC68HC000IEI16R for both new designs and legacy field support.
Alternatives de remplacement direct pour MC68HC000IEI16R — 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 MC68HC000IEI16R (même facteur de forme et même empreinte) — différant par Mounting Type, Number of Cores, Operating Temperature, Package.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
MC68HC000EI16
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
MC68HC000FN16
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
MC68HC000CEI16
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$17.4 / unité
Voir la fiche technique →MC68HC001FN16
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
MC68EC000EI16
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
MC68HC000IEI16R Valeurs maximales et caractéristiques électriques
| Core Processor | EC000 (M68000 Family) |
| Number of Cores | 1 Core, 32-Bit |
| Speed / Clock Frequency | 16 MHz |
| Largeur du bus de données | 16-bit external (32-bit internal registers) |
| Address Bus Width | 24-bit (16 MB address space) |
| Co-Processors / DSP | None |
| RAM Controllers | None (external memory required) |
| Graphics Acceleration | No |
| Display & Interface Controllers | None |
| Ethernet | None |
| SATA | None |
| USB | None |
| Voltage - I/O | 5.0 V |
| Boîtier | 68-PLCC (24.21 mm x 24.21 mm) |
| Type de montage | Surface Mount (PLCC socket compatible) |
| Température de fonctionnement | -40C to +85C (Industrial grade) |
| Series | M680x0 |
| Part Status | Obsolete (last-time-buy may apply) |
Configuration des broches de MC68HC000IEI16R
| Broche 1 | D15 — Data bus bit 15 (MSB of 16-bit external data bus) |
| Broche 2 | D14 — Data bus bit 14 |
| Broche 3 | D13 — Data bus bit 13 |
| Broche 4 | D12 — Data bus bit 12 |
| Broche 5 | D11 — Data bus bit 11 |
| Broche 6 | D10 — Data bus bit 10 |
| Broche 7 | D9 — Data bus bit 9 |
| Broche 8 | D8 — Data bus bit 8 |
| Broche 9 | D7 — Data bus bit 7 |
| Broche 10 | D6 — Data bus bit 6 |
| Broche 11 | D5 — Data bus bit 5 |
| Broche 12 | D4 — Data bus bit 4 |
| Broche 13 | D3 — Data bus bit 3 |
| Broche 14 | D2 — Data bus bit 2 |
| Broche 15 | D1 — Data bus bit 1 |
| Broche 16 | D0 — Data bus bit 0 (LSB) |
| Broche 17 | GND — Ground |
| Broche 18 | A23 — Address bus bit 23 (MSB) |
| Broche 19 | A22 — Address bus bit 22 |
| Broche 20 | A21 — Address bus bit 21 |
| Broche 21 | A20 — Address bus bit 20 |
| Broche 22 | A19 — Address bus bit 19 |
| Broche 23 | A18 — Address bus bit 18 |
| Broche 24 | A17 — Address bus bit 17 |
| Broche 25 | A16 — Address bus bit 16 |
| Broche 26 | A15 — Address bus bit 15 |
| Broche 27 | A14 — Address bus bit 14 |
| Broche 28 | A13 — Address bus bit 13 |
| Broche 29 | A12 — Address bus bit 12 |
| Broche 30 | A11 — Address bus bit 11 |
| Broche 31 | A10 — Address bus bit 10 |
| Broche 32 | A9 — Address bus bit 9 |
| Broche 33 | A8 — Address bus bit 8 |
| Broche 34 | A7 — Address bus bit 7 |
| Broche 35 | A6 — Address bus bit 6 |
| Broche 36 | A5 — Address bus bit 5 |
| Broche 37 | A4 — Address bus bit 4 |
| Broche 38 | A3 — Address bus bit 3 |
| Broche 39 | A2 — Address bus bit 2 |
| Broche 40 | A1 — Address bus bit 1 |
| Broche 41 | VCC — +5V power supply |
| Broche 42 | CLK — Clock input |
| Broche 43 | GND — Ground |
| Broche 44 | RESET — Reset input (active low) |
| Broche 45 | HALT — Halt input (active low) |
| Broche 46 | IPL2 — Interrupt priority level 2 |
| Broche 47 | IPL1 — Interrupt priority level 1 |
| Broche 48 | IPL0 — Interrupt priority level 0 (LSB) |
| Broche 49 | FC2 — Function code bit 2 |
| Broche 50 | FC1 — Function code bit 1 |
| Broche 51 | FC0 — Function code bit 0 (LSB) |
| Broche 52 | R/W — Read/Write control signal |
| Broche 53 | AS — Address strobe (active low) |
| Broche 54 | UDS — Upper data strobe (active low) |
| Broche 55 | LDS — Lower data strobe (active low) |
| Broche 56 | DTACK — Data transfer acknowledge (active low) |
| Broche 57 | BERR — Bus error (active low) |
| Broche 58 | VPA — Valid peripheral address (active low) |
| Broche 59 | E — Enable clock (peripheral timing) |
| Broche 60 | VMA — Valid memory address (active low) |
| Broche 61 | VCC — +5V power supply |
| Broche 62 | BR — Bus request (active low) |
| Broche 63 | BG — Bus grant (active low) |
| Broche 64 | BGACK — Bus grant acknowledge (active low) |
| Broche 65 | TCLK — Test clock (factory test only) |
| Broche 66 | TMS — Test mode select (factory test only) |
| Broche 67 | TDI — Test data in (factory test only) |
| Broche 68 | TDO — Test data out (factory test only) |
Applications typiques
MC68HC000IEI16R convient pour 7 applications: Industrial PLC Controllers, Legacy Arcade/Gaming Hardware, Telecom Switching Equipment, Medical Instrumentation Controllers, Point-of-Sale Terminals, Military and Aerospace Embedded Systems, Field-Replaceable Legacy Embedded Boards.
Industrial PLC Controllers
The MC68HC000IEI16R's deterministic interrupt response, flat 16 MB address space, and 16-bit bus make it a strong fit for industrial programmable logic controllers where predictable real-time behavior matters. The EC000 core delivers roughly 2 MIPS at 16 MHz, enough for ladder-logic interpreters and PID control loops. Why it fits: 5 V I/O rails mate directly to legacy 74LS TTL glue logic still common in factory-floor PLCs. The asynchronous DTACK bus allows direct connection to slow peripherals like opto-isolated digital inputs and relay driver outputs without wait-state logic. Recommended companion parts: 68230 PIT for parallel I/O, 68681 DUART for serial, MC68HC000IEI16R acts as the central MPU.
Recommandé
Legacy Arcade/Gaming Hardware
The MC68HC000IEI16R is the canonical CPU for classic arcade boards and early home computers from the late 1980s and early 1990s. Why it fits: Sega System 16/18, Capcom CPS-1, and many Neo Geo titles all use this exact MPU at 7-12 MHz with 68-PLCC packages, plus several Atari ST revisions and early Amiga 500 motherboard revisions. The flat memory model and simple bus protocol made the M68K ISA easy for game developers to target with hand-coded assembly. For modern restoration work, this part is often the hardest component to source. Recommended companions: 68000 assembler toolchains, custom PAL/GAL glue logic, YM2151 or OKI6295 sound chips.
Recommandé
Telecom Switching Equipment
Why the MC68HC000IEI16R fits telecom: the M68K family's supervisor/user privilege model and robust interrupt controller made it a popular choice for digital telephone switches, ISDN terminal adapters, and PBX control cards throughout the 1990s. The 16 MHz EC000 can handle HDLC framing, voice channel switching control, and supervisory messaging with margin. The asynchronous bus simplifies interfacing to serial backplane transceivers. The 5 V I/O rail mates to classic telecom ASICs and E1/T1 framer chips. Recommended companions: DS2180A T1 framer, DS21348 QDS0 framer, custom HDLC controllers, and DRAM refresh via external controller.
Recommandé
Medical Instrumentation Controllers
Why the MC68HC000IEI16R works in medical devices: many certified medical instruments (patient monitors, infusion pumps, blood gas analyzers) shipped with this MPU because the M68K architecture has a long safety-certification history and mature RTOS support (pSOS, VRTX, OS-9). The flat memory model makes IEC 62304 software verification easier than segmented designs. Field-replacement of installed medical systems today relies on continued availability of this MPU. Recommended companions: 68230 PIT for sensor I/O, 68681 DUART for host communication, opto-isolated power control.
Recommandé
Point-of-Sale Terminals
Why the MC68HC000IEI16R suits POS terminals: flat memory, fast context-switch, and ability to drive character LCDs, keypad matrices, magnetic-stripe readers, and serial receipt printers via a few DUARTs. The 16 MHz clock handles encrypted PIN-pad protocols, transaction logging, and TCP/IP over external Ethernet controllers. Industrial temperature range ensures reliability in store environments. The 5 V rail simplifies power supply design vs. modern 3.3 V MPUs. Recommended companions: 68681 DUART, 8255 PPI for keypad/LCD, LAN91C111 Ethernet MAC.
Recommandé
Military and Aerospace Embedded Systems
Why the MC68HC000IEI16R fits defense: many Mil-Std-1750A and legacy avionics subsystems still use the M68K architecture because of its deterministic behavior, long-standing RTCA DO-178B/C software certification evidence, and dual-source availability between NXP and Rochester Electronics (for mil-spec variants). The -40C to +85C industrial temperature grade handles most ground-mobile and shelter environments. For harsher requirements, the original MC68000 military (-55C to +125C) variants are still supported. Recommended companions: MIL-STD-1553 bus interfaces (DDC BU-61580), MIL-STD-1553 transceivers, ARINC 429 line drivers.
Recommandé
Field-Replaceable Legacy Embedded Boards
Why the MC68HC000IEI16R is the standard for legacy maintenance: when an existing 68-PLCC socketed CPU board fails in the field, this is the most widely available drop-in replacement. ColdFire does not fit the same footprint, and migration to ARM would require PCB redesign. The part's 5 V operation matches legacy bus drivers and memory chips. Industrial temperature grade ensures operation in uncontrolled enclosures. Recommended companions: 74LS245 bus transceivers, HM6116 SRAM, 27C256 EPROM, all socketed through-hole parts for easy field swap.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour MC68HC000IEI16R — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | MC68HC000EI16 | MC68HC000FN16 | MC68HC000CEI16 | MC68HC001FN16 | MC68EC000EI16 |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 68-PLCC (24.21x24.21) | 68-PLCC - same | 68-PLCC - same | 68-PLCC - same | 68-PLCC - same | 68-PLCC - same |
| Core | EC000 (32-bit) | EC000 - same | EC000 - same | EC000 - same | EC000 + dynamic bus sizing | EC000 (low-voltage variant) |
| Clock Frequency | 16 MHz | 16 MHz - same | 16 MHz - same | 16 MHz - same | 16 MHz - same | 16 MHz - same |
| Supply Voltage (I/O) | 5.0 V | 5.0 V - same | 5.0 V - same | 5.0 V - same | 5.0 V - same | 3.3 V - lower voltage |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | 0C to +70C (Commercial) | -40C to +85C | 0C to +70C | -40C to +85C |
| Data Bus Width | 16-bit external | 16-bit - same | 16-bit - same | 16-bit - same | 8/16-bit dynamic | 8/16-bit dynamic |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
Principaux différenciateurs
- Industrial temperature grade (-40C to +85C) (vs MC68HC000FN16)
- Tape and reel packaging for high-volume assembly (vs MC68HC000EI16)
- 16 MHz rated speed grade in the 68-PLCC package (vs MC68HC000EI10)
Notes de conception
Bus hang on missing DTACK: the asynchronous MC68HC000 bus requires every memory cycle to assert DTACK or be aborted with BERR. If a peripheral or memory device is deselected (chip-select missing) or in a high-impedance state, the CPU will stall indefinitely waiting for DTACK. Always include a watchdog timer or external supervisor that asserts RESET/BERR after a timeout. This is the single most common failure mode on legacy M68K designs.
Estimated: VCC decoupling - the MC68HC000IEI16R draws approximately 50-80 mA active at 16 MHz in the HCMOS implementation. Place one 0.1 uF ceramic and one 10 uF bulk capacitor within 5 mm of each VCC pin (this part has two VCC pins and two GND pins on the 68-PLCC). Without proper decoupling, internal bus activity can cause VCC droops that trigger spurious bus errors. Add a 10 uF tantalum at the board edge for bulk decoupling.
PLCC socket selection: for through-hole field-replaceable designs, use a quality machined-pin PLCC68 socket (e.g., 3M or Methode). Avoid cheap stamped sockets that develop intermittent contact after thermal cycling. For surface-mount designs, ensure the land pattern matches JEDEC PLCC68 with proper pad geometry - the leads extend slightly beyond the package body. Add a keep-out area under the socket for PLCC extraction tool access.
Address bus termination: at 16 MHz with address transitions in 25 ns, the address bus can exhibit significant ringing when driving multiple DRAM/ROM chips. Add 33 ohm series resistors near the CPU address pins if your design has long address traces (>50 mm) or many loads (>5 devices). The data bus benefits from similar treatment if multiple peripherals are mounted. Refer to the Motorola AN-E000 series application note for M68K bus termination guidance.
Informations de conformité
Part status Obsolete per NXP. RoHS, REACH, lead-free, and halogen-free status not confirmed in the provided data - request documentation from authorized distributors or NXP for engineering qualification. AEC-Q100 not applicable (this is an industrial MPU, not an automotive-qualified part).
