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NXP Semiconductors MC68HC000EI16R2
- Part No.:
- MC68HC000EI16R2
- Manufacturer:
- NXP Semiconductors
- Category:
- Microprocessors
- Package:
- 68-LCC (J-Lead)
- Datasheet:
-
MC68HC000EI16R2.pdf
- Description:
- IC MPU M680X0 16MHZ 68PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,184
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Product details
Overview
MC68HC000EI16R2 from Motorola is a static 32-bit embedded microprocessor with 24-bit address bus and statically selectable 8-/16-bit data bus, operating at 16 MHz with 3.3V or 5.0V supply, delivering object-code compatibility with the M68000 Family and pin-for-pin compatibility with MC68EC000 in QFP/TQFP packages for portable low-power systems including PDAs and battery-operated handheld instruments.
For engineers reviewing the MC68HC000EI16R2 datasheet, MC68HC000EI16R2 pinout, MC68HC000EI16R2 application, or MC68HC000EI16R2 equivalent, key selection considerations include static low-power operation (0.5 µA standby), 16-Mbyte linear addressing, interrupt priority handling (7 levels), and hardware/software compatibility with legacy M68000 toolchains and codebases.
Technical Context
The MC68HC000EI16R2 implements a static HCMOS version of the M68000 architecture with eight 32-bit data registers, eight 32-bit address registers, 14 addressing modes, and memory-mapped I/O. Its execution unit supports 56 instruction types across five data types, enabling efficient high-level language compilation.
It features asynchronous bus control via AS, R/W, UDS/LDS, and DTACK signals, full bus arbitration (BR/BG), and processor status outputs (FC2–FC0) indicating supervisor/user mode and address space. Interrupt handling includes autovectoring (AVEC) and three IPL inputs for seven priority levels, with nonmaskable Level 7.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | M68000-family 32-bit CPU with 24-bit address bus (16 Mbyte linear space) |
| Operating Frequency | 16 MHz - defines maximum instruction throughput and system timing budget |
| Supply Voltage | 3.3 V or 5.0 V - enables dual-voltage system integration without level-shifting |
| Standby Current | Typical 0.5 µA at 3.3 V - enables extended battery life in sleep-mode portable devices |
| Data Bus Width | Statically selectable 8- or 16-bit - reduces PCB trace count and simplifies memory interface design |
| Interrupt Levels | 7 priority levels with autovectoring - supports deterministic real-time response to external events |
| Package Type | 64-pin plastic Quad Flat Pack (QFP) - surface-mount compatible with standard reflow processes |
Pinout & Package
MC68HC000EI16R2 is housed in a 64-lead plastic Quad Flat Pack (QFP) with 0.8 mm lead pitch and 14.0 mm × 14.0 mm body size. Pin functions are electrically and physically identical to MC68EC000 in this package variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A23 | Address bus outputs | 24-bit unidirectional address lines; A3–A1 encode interrupt level during vector fetch |
| D0–D15 | Data bus bidirectional I/O | 16-bit data path; width selected statically by MODE pin (8- or 16-bit mode) |
| AS | Address strobe output | Indicates valid address on A-bus; used to latch address in external logic or memory |
| R/W | Read/write control output | Defines direction of D-bus transfer; active-high = read, active-low = write |
| UDS/LDS | Upper/lower data strobes | Enable byte-level access to 16-bit data bus; essential for 8-bit peripheral interfacing |
| DTACK | Data transfer acknowledge input | Externally generated signal confirming memory/peripheral readiness; controls cycle timing |
| IPL0–IPL2 | Interrupt priority level inputs | Three-bit encoded input selecting one of seven maskable interrupt levels (0–6); Level 7 is nonmaskable |
| AVEC | Autovector enable input | When asserted, enables automatic vector address generation based on IPL state |
| FC0–FC2 | Function code outputs | Encode current processor mode (user/supervisor) and address space (data/program/space) during AS assertion |
| CLK | System clock input | Accepts single-phase clock; internal static design allows clock stoppage without state loss |
| RESET | Active-low reset input | Initializes CPU registers and starts execution from vector at 0x000000; synchronous to CLK |
| HALT | Active-low halt input | Stops instruction execution while preserving register and bus state; resumes on next CLK edge |
Key Features
| Feature | Design Value |
|---|---|
| Static core architecture | Enables zero-power clock gating and deterministic low-power mode entry/exit without state loss |
| Pin-for-pin compatibility with MC68EC000 (QFP) | Allows drop-in replacement in existing MC68EC000 designs without PCB revision |
| Object-code compatibility with full M68000 Family | Permits reuse of legacy assembly/C firmware and development tools across performance tiers |
| Configurable 8-/16-bit data bus | Reduces memory subsystem cost and complexity by supporting either narrow or wide peripherals |
| Seven-level programmable interrupt controller | Supports prioritized real-time event handling with autovectoring for rapid ISR dispatch |
Applications
| Portable Medical Instruments | Industrial Handheld Data Loggers |
|---|---|
|
Use Scenario: Battery-powered glucose meters and portable ECG monitors requiring long operational life between charges. IC Role / Device Role / Timing Role: Main system controller executing sensor acquisition, display management, and flash-based data storage. Use Value: 0.5 µA static standby current extends battery life to months; 16-Mbyte addressing supports local firmware + calibration table storage. |
Use Scenario: Ruggedized field instruments capturing temperature, pressure, and humidity over extended duty cycles. IC Role / Device Role / Timing Role: Real-time data acquisition engine interfacing with analog front-ends and SD card storage. Use Value: Asynchronous bus protocol (AS/R/W/DTACK) enables reliable communication with slow industrial sensors and memory cards. |
| Consumer Electronic Games | Embedded Control Panels |
|
Use Scenario: Low-cost handheld gaming consoles with monochrome LCD and tactile button interface. IC Role / Device Role / Timing Role: Game logic processor managing sprite rendering, audio synthesis, and user input polling. Use Value: 16 MHz clock and 56-instruction set deliver responsive gameplay; 8-/16-bit bus flexibility supports both simple ROM and expanded SRAM cartridges. |
Use Scenario: Front-panel controllers for HVAC systems, vending machines, and test equipment with LED/LCD displays and keypad input. IC Role / Device Role / Timing Role: Human-machine interface coordinator handling display refresh, button debounce, and serial communication to main controller. Use Value: Seven interrupt levels allow concurrent handling of display updates, keypad scan, and UART receive events without polling overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar embedded microprocessor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC68EC000RC16 | Same 16 MHz speed, 5 V only, no static low-power mode (typ. 15 mA active, >100 µA standby) | Lacks ultra-low-power capability; unsuitable for battery-critical designs | Select MC68HC000EI16R2 when standby current <1 µA and dual-voltage support are required |
| MC68332ACPV16 | Integrated 32-bit CPU32 core, on-chip RAM/ROM, timers, and QSM module; 16 MHz max | Higher integration reduces BOM count but increases footprint and software migration effort | Select MC68HC000EI16R2 when leveraging existing M68000 toolchain and discrete memory architecture is preferred |
Compared with MC68EC000RC16 and MC68332ACPV16, the MC68HC000EI16R2 uniquely balances legacy compatibility, ultra-low static power, and flexible voltage operation-making it optimal for cost-sensitive, battery-constrained M68000-based upgrades where minimal hardware change is critical.
Availability
MC68HC000EI16R2 is available at Aetrix Electronics and suitable for portable medical instruments, industrial handheld data loggers, and consumer electronic games requiring stable component supply and long-term lifecycle support.
Supply support for MC68HC000EI16R2 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Motorola Semiconductor (later Freescale, now NXP) pioneered high-reliability embedded microprocessors for industrial and portable applications, emphasizing architectural longevity and toolchain stability.
The MC68HC000EI16R2 belongs to the MC68SEC000 family, designed specifically to extend the M68000 ecosystem into ultra-low-power embedded systems while preserving binary and pin compatibility with prior generations.
FAQ
What is the operating voltage range supported by the MC68HC000EI16R2?
The MC68HC000EI16R2 operates across two nominal supply rails: 3.3 V ± 0.3 V and 5.0 V ± 10%. This dual-voltage capability allows direct integration into mixed-signal systems without external level shifters, and enables backward compatibility with legacy 5 V designs while supporting newer low-voltage peripherals. The MC68HC000EI16R2 maintains full functionality-including 16 MHz operation and interrupt response-at both voltages.
Is the MC68HC000EI16R2 pin-compatible with the MC68EC000?
Yes, the MC68HC000EI16R2 is pin-for-pin compatible with the MC68EC000 when both are packaged in the 64-lead plastic QFP. Signal assignments, power/ground pin locations, and timing interface definitions match exactly, enabling drop-in replacement in existing MC68EC000 layouts. The MC68HC000EI16R2 retains identical AS, R/W, UDS/LDS, DTACK, and IPL signaling behavior.
What is the minimum standby current specification for the MC68HC000EI16R2?
The MC68HC000EI16R2 draws a typical 0.5 µA in static standby mode at 3.3 V, with all clocks halted and internal state preserved. This quiescent current enables multi-month battery operation in intermittent-use devices like handheld meters. The MC68HC000EI16R2 achieves this via fully static HCMOS logic design-no refresh cycles or leakage-prone dynamic nodes are present.
Does the MC68HC000EI16R2 support 8-bit peripheral interfacing?
Yes, the MC68HC000EI16R2 supports 8-bit peripheral interfacing through its statically configurable data bus: the MODE pin selects either 8-bit or 16-bit operation at power-up. In 8-bit mode, D0–D7 are active, and LDS/UDS operate independently to enable byte-select access-allowing seamless connection to 8-bit memories, UARTs, and GPIO expanders without glue logic.
How many interrupt priority levels does the MC68HC000EI16R2 provide?
The MC68HC000EI16R2 provides seven maskable interrupt priority levels (0–6) plus one nonmaskable Level 7, controlled by the three IPL inputs (IPL0–IPL2). Autovectoring via the AVEC input allows automatic vector address generation during interrupt acknowledge cycles, reducing ISR latency and eliminating software polling. This interrupt structure is identical to the MC68EC000 and fully supported in the MC68HC000EI16R2.
MC68HC000EI16R2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 68-LCC (J-Lead)
- Series:
- M680x0
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Core Processor:
- EC000
- Number of Cores/Bus Width:
- 1 Core, 32-Bit
- Speed:
- 16MHz
- Co-Processors/DSP:
- -
- RAM Controllers:
- -
- Graphics Acceleration:
- No
- Display & Interface Controllers:
- -
- Ethernet:
- -
- SATA:
- -
- USB:
- -
- Voltage - I/O:
- 5.0V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Security Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 68-PLCC (24.21x24.21)
- Additional Interfaces:
- -
MC68HC000EI16R2 FAQ
1.How can I place an order for MC68HC000EI16R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC68HC000EI16R2 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MC68HC000EI16R2 reliable?
The price and inventory of MC68HC000EI16R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC68HC000EI16R2 is usually 5 days.
3.What payment methods are accepted for MC68HC000EI16R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC68HC000EI16R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC68HC000EI16R2?
MC68HC000EI16R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC68HC000EI16R2 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MC68HC000EI16R2?
For technical support, including MC68HC000EI16R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC68HC000EI16R2 requirements.
6.How does Aetrix verify that MC68HC000EI16R2 is sourced from the original manufacturer or authorized distributors?
All MC68HC000EI16R2 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MC68HC000EI16R2 meets industry standards.
7.What is the process for return or replacement of MC68HC000EI16R2?
All MC68HC000EI16R2 units undergo pre-shipment inspection (PSI). If there is an issue with MC68HC000EI16R2, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MC68HC000EI16R2 part is unused and in its original packaging.
Return procedure for MC68HC000EI16R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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