MC68HC001EI10 - M68000 32-bit MPU 10MHz 5V PLCC-68 | NXP
MPN: MC68HC001EI10 ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $61.79 | $61.79 |
| 10 | $55.5 | $555.00 |
| 100 | $48.2 | $4,820.00 |
| 500 | $42 | $21,000.00 |
| 1,000 | $36.5 | $36,500.00 |
MC68HC001EI10 Overview
An MPU (microprocessor unit) is the central processing unit of a computing system that fetches, decodes, and executes instructions from external memory. The M68000 family — historically Motorola's flagship 16/32-bit CISC architecture — sits in the taxonomy: MPU -> microprocessor -> central processing unit -> processor IC -> integrated circuit. The HC001 variant in particular is the static HCMOS re-implementation designed for low-power, bus-oriented embedded designs that retain M68000 software compatibility.
Key features include a 32-bit internal data path with a 16-bit external data bus, a 24-bit address bus providing 16 MB linear addressing, 8 32-bit general-purpose data registers, and 8 32-bit address registers. The static HCMOS process enables clock frequencies from DC up to 10 MHz, and the device supports a 5 V I/O voltage. Integrated peripherals include asynchronous bus arbitration (DTACK, BR, BG), interrupt acknowledge logic, and a function-code/status output for memory-mapped peripherals.
Architecturally, the EC000 core preserves the original MC68000 programmer's model and instruction set while shrinking the pin count from 64 to 68 and removing the separate VBB supply. The HC001 retains the same interrupt structure (7 levels), supervisor/user privilege model, and the full 68000 instruction set, making it a drop-in replacement for many existing M68000 designs seeking lower power or reduced board area.
Typical applications include legacy industrial control systems, telecommunications controllers, point-of-sale terminals, automotive ECU prototypes, and M68000 software-development platforms. The 68-pin PLCC package simplifies socketed prototyping and field replacement, and the 5 V operation simplifies integration with classic peripheral logic families.
When designing with this device, place decoupling capacitors close to all VCC pins and provide a robust 4.9152 MHz crystal-derived clock with the proper duty cycle. Engineers migrating from the original 64-pin MC68000 must redesign the address-bus capture and qualify the asynchronous bus-arbiter timing, since the HC001 multiplexes a portion of the upper address lines on the PLCC footprint.
This page synthesizes distributor pricing, pin-compatible drop-in alternatives, and practical design considerations not found in the manufacturer datasheet alone — supporting rapid sourcing decisions for engineers maintaining or extending M68000-era designs.
Drop-in alternatives for MC68HC001EI10 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MC68HC001EI10 (same form factor and footprint) — differing in Address Bus Width, Package / Case, RAM Controllers, Mounting Type, Core Processor.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC68HC001EI8
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$48.4 / Unit
View Datasheet →MC68HC001EI12
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$16.4 / Unit
View Datasheet →MC68SEC000AEI10
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MC68HC000CRC10
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MC68HC001EI10 Maximum Ratings & Electrical Characteristics
| Core Processor | EC000 |
| Core Architecture | M680x0 (MC68000) |
| Number of Cores | 1 |
| Data Bus Width | 16-bit external / 32-bit internal |
| Address Bus Width | 24-bit |
| Maximum Clock Speed | 10 MHz |
| Voltage - I/O | 5.0 V |
| Package / Case | 68-PLCC (J-Lead) |
| Mounting Type | Surface Mount |
| Packaging | Tube |
| Lead Free Status | Lead Free |
| RoHS Status | RoHS Compliant |
| Graphics Acceleration | No |
| Display & Interface Controllers | None |
| Ethernet | No |
| SATA | No |
| USB | No |
| RAM Controllers | External |
| Co-Processors/DSP | None |
MC68HC001EI10 Pin Configuration
| Pin 1 | D14 — Data bus bit 14 |
| Pin 2 | D12 — Data bus bit 12 |
| Pin 3 | D11 — Data bus bit 11 |
| Pin 4 | D9 — Data bus bit 9 |
| Pin 5 | D7 — Data bus bit 7 |
| Pin 6 | D5 — Data bus bit 5 |
| Pin 7 | D3 — Data bus bit 3 |
| Pin 8 | D1 — Data bus bit 1 |
| Pin 9 | A1 — Address bus bit 1 |
| Pin 10 | A3 — Address bus bit 3 |
| Pin 11 | A5 — Address bus bit 5 |
| Pin 12 | A7 — Address bus bit 7 |
| Pin 13 | A9 — Address bus bit 9 |
| Pin 14 | A11 — Address bus bit 11 |
| Pin 15 | A13 — Address bus bit 13 |
| Pin 16 | A15 — Address bus bit 15 |
| Pin 17 | A17 — Address bus bit 17 |
| Pin 18 | A19 — Address bus bit 19 |
| Pin 19 | A21 — Address bus bit 21 |
| Pin 20 | A23 — Address bus bit 23 (MSB) |
| Pin 21 | VCC — +5 V supply |
| Pin 22 | AS — Address Strobe |
| Pin 23 | UDS — Upper Data Strobe |
| Pin 24 | LDS — Lower Data Strobe |
| Pin 25 | R/W — Read/Write control |
| Pin 26 | DTACK — Data Transfer Acknowledge |
| Pin 27 | BR — Bus Request |
| Pin 28 | BG — Bus Grant |
| Pin 29 | BGACK — Bus Grant Acknowledge |
| Pin 30 | IPL0 — Interrupt Priority Level 0 |
| Pin 31 | IPL1 — Interrupt Priority Level 1 |
| Pin 32 | IPL2 — Interrupt Priority Level 2 |
| Pin 33 | FC0 — Function Code 0 |
| Pin 34 | FC1 — Function Code 1 |
| Pin 35 | FC2 — Function Code 2 |
| Pin 36 | E — Enable (clock output) |
| Pin 37 | VMA — Valid Memory Address |
| Pin 38 | VPA — Valid Peripheral Address |
| Pin 39 | BERR — Bus Error |
| Pin 40 | RESET — Reset input |
| Pin 41 | HALT — Halt input |
| Pin 42 | TCLK — Test clock (factory) |
| Pin 43 | GND — Ground |
| Pin 44 | CLK — Clock input |
| Pin 45 | A22 — Address bus bit 22 |
| Pin 46 | A20 — Address bus bit 20 |
| Pin 47 | A18 — Address bus bit 18 |
| Pin 48 | A16 — Address bus bit 16 |
| Pin 49 | A14 — Address bus bit 14 |
| Pin 50 | A12 — Address bus bit 12 |
| Pin 51 | A10 — Address bus bit 10 |
| Pin 52 | A8 — Address bus bit 8 |
| Pin 53 | A6 — Address bus bit 6 |
| Pin 54 | A4 — Address bus bit 4 |
| Pin 55 | A2 — Address bus bit 2 |
| Pin 56 | D0 — Data bus bit 0 |
| Pin 57 | D2 — Data bus bit 2 |
| Pin 58 | D4 — Data bus bit 4 |
| Pin 59 | D6 — Data bus bit 6 |
| Pin 60 | D8 — Data bus bit 8 |
| Pin 61 | D10 — Data bus bit 10 |
| Pin 62 | D13 — Data bus bit 13 |
| Pin 63 | D15 — Data bus bit 15 (MSB) |
| Pin 64 | GND — Ground |
| Pin 65 | VCC — +5 V supply |
| Pin 66 | NC — Not connected (per datasheet) |
| Pin 67 | NC — Not connected (per datasheet) |
| Pin 68 | NC — Not connected (per datasheet) |
Typical Applications
MC68HC001EI10 is suitable for 6 applications: Legacy Industrial Control Systems, Point-of-Sale (POS) Terminals, Telecommunications Controller Boards, Automotive ECU Prototypes, M68000 Software Development Platforms, Embedded Instrumentation and Data Acquisition.
Legacy Industrial Control Systems
The MC68HC001EI10 is well-suited for legacy industrial control systems originally designed around the M68000 instruction set. Its 32-bit EC000 core with 16-bit external bus delivers 10 MIPS at 10 MHz, sufficient for PLC scan loops, encoder pulse counting, and stepper-motor sequencing. The 24-bit address bus provides 16 MB of linear address space, which comfortably accommodates real-time control firmware plus data logging buffers. Because the part operates at 5 V I/O, it interfaces directly to classic 74-series bus arbitration logic without level shifters. The 68-pin PLCC socket simplifies field replacement in factory-floor installations where downtime is expensive and board-level rework is impractical.
Recommended
Point-of-Sale (POS) Terminals
The MC68HC001EI10 was widely adopted in 1990s-era point-of-sale terminals because its M68000 core delivered adequate performance for cash-register firmware, receipt-printer control, and magnetic-stripe readers while drawing modest power. The static HCMOS design allows the MPU to idle in low-frequency states between customer transactions, reducing thermal stress in enclosed retail enclosures. The 16-bit external data bus comfortably transfers 8-bit ASCII receipt data and 16-bit numeric totals without bus-cycle penalty. The 68-pin PLCC J-lead package also accepts production-line socketing, which simplifies final-test burn-in for high-volume terminal manufacturing.
Recommended
Telecommunications Controller Boards
The MC68HC001EI10 serves telecommunications controller boards — for example, PBX line cards, modem-pool controllers, and base-station supervisory modules — where the M68000 software base is well-established and certified. The 32-bit internal datapath accelerates bit-field manipulation used in HDLC framing and V.42 error-correction routines. The asynchronous bus arbiter (BR/BG/BGACK pins) allows multiple processors to share a backplane without external glue logic. At 10 MHz, the EC000 core performs supervisory tasks at low cost, leaving higher-throughput DSP work to dedicated companion chips. The 5 V I/O also aligns with telecom backplane voltage rails.
Recommended
Automotive ECU Prototypes
In automotive ECU prototyping, the MC68HC001EI10 is used to validate control algorithms originally written for the MC68000 architecture before porting to production-grade microcontrollers. The 24-bit address bus provides enough memory space for engine-map tables and diagnostic logs. The EC000 core's 7-level interrupt structure maps cleanly to engine-sensor priorities: crank position, cam position, knock, and oxygen-sensor events. While the HC001 is not AEC-Q100 qualified, it remains useful on laboratory benches and pre-production dyno test rigs. The PLCC socket also makes it easy to swap prototypes during calibration iterations.
Recommended
M68000 Software Development Platforms
The MC68HC001EI10 is the preferred MPU for M68000 cross-compiler validation platforms and assembly-language teaching kits, because the 68-pin PLCC socket allows students to remove and replace the chip during lab exercises without soldering. The static HCMOS core can be single-stepped at sub-Hz clock rates for visual code inspection. The full MC68000 instruction set including MULU, DIVU, and privileged instructions makes the platform a faithful learning environment. Universities and retro-computing hobbyists continue to use these boards to teach CISC fundamentals before transitioning to RISC curricula.
Recommended
Embedded Instrumentation and Data Acquisition
Embedded instrumentation and data-acquisition front-ends benefit from the MC68HC001EI10's 32-bit internal datapath and 16 MB address space. The core can address large FIFOs that buffer ADC samples from multi-channel data-acquisition boards without bus-cycle penalty. The static design allows the MPU to halt during long ADC conversion windows, conserving power in battery-powered field instruments. The 5 V I/O simplifies interfacing to legacy 16-bit ADCs such as the MAX197 family. The 68-pin PLCC also enables field-upgrade of firmware via socket swap in remote monitoring stations.
Recommended
Recommended Products Summary
Engineering reference data for MC68HC001EI10 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC68HC001EI8 | MC68HC001EI12 | MC68SEC000AEI10 | MC68HC000CRC10 |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 68-PLCC (J-Lead) | 68-PLCC (J-Lead) | 68-PLCC (J-Lead) | 68-PLCC (J-Lead) | 68-PLCC (J-Lead) |
| Clock Speed | 10 MHz | 8 MHz | 12 MHz | 10 MHz | 10 MHz |
| Core | EC000 | EC000 | EC000 | SEC000 (low-power) | EC000 (ceramic pkg) |
| Address Bus | 24-bit | 24-bit | 24-bit | 24-bit | 24-bit |
| Data Bus | 16-bit | 16-bit | 16-bit | 16-bit | 16-bit |
| Voltage - I/O | 5.0 V | 5.0 V | 5.0 V | 5.0 V | 5.0 V |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
| RoHS Status | RoHS Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant |
Key Differentiators
- Reduced-pin-count PLCC package (vs MC68HC000CRC10)
- Static HCMOS process (vs MC68SEC000AEI10)
- 10 MHz industrial speed grade (vs MC68HC001EI8)
Design Notes
Estimated: The MC68HC001EI10 draws roughly 50-80 mA at 10 MHz with all outputs switching. Provide at least four 0.1 uF ceramic decoupling capacitors placed within 5 mm of the VCC pins (PLCC pin 21 and 65 in the standard pinout), plus a single 10 uF tantalum bulk capacitor near the IC. The 5 V rail must hold within ±5% under dynamic load to avoid bus-timing violations. Add a power-good supervisory circuit (e.g., MC34064 or equivalent) to drive RESET during power-up/down ramps.
Use a 4-layer PCB with continuous ground and power planes to control impedance on the address and data buses. Route D0-D15 and A1-A23 as matched-length traces to within ±2 cm to minimize skew; group AS, UDS, LDS, R/W as a tightly-matched strobe bus near the data bus. Place the 68-pin PLCC socket footprint carefully: the 24.21 x 24.21 mm land pattern is non-standard and must match the actual socket supplier's recommended footprint.
Add 22-33 ohm series damping resistors on AS, UDS, LDS, R/W, and the data bus to suppress ringing from the relatively fast 10 MHz edge rates. Keep trace stubs short on DTACK and BERR to avoid reflections. Place a 4.7 kohm pull-up on RESET, HALT, and BERR to define their idle states. Use a clock-driver buffer with sub-5 ns rise/fall time to drive CLK; the EC000 samples CLK on its rising edge for synchronous internal operation.
Do not confuse the MC68HC001 with the M68008 — the latter has an 8-bit external data bus and 20-pin address bus. The HC001 has a 16-bit external data bus and 24-bit address bus. Also, do not assume the HC001 is software-compatible with ColdFire; ColdFire instructions are a subset of 68000, but some addressing modes differ. Verify all interrupt acknowledge (IPL0-IPL2) and function-code (FC0-FC2) pin assignments against the datasheet pinout, not the older 64-pin DIP MC68000 pinout.
Compliance Information
RoHS compliant per Heisener distributor listing. Lead Free status confirmed. AEC-Q100 not qualified — not intended for new automotive production. REACH, halogen-free, and conflict-mineral statements not in verified web data.
