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NXP Semiconductors MC68HC11D0CFNE2
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- Part No.:
- MC68HC11D0CFNE2
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 44-LCC (J-Lead)
- Datasheet:
-
MC68HC11D0CFNE2.pdf
- Description:
- IC MCU 8BIT ROMLESS 44PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,870
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Product details
Overview
MC68HC11D0CFNE2 from Freescale Semiconductor is a ROM-based 8-bit microcontroller unit (MCU) built on the MC68HC11E9 architecture, featuring 4 KB of mask-programmed ROM, 192 bytes of static RAM (retained in standby), and a 16-bit programmable timer system with four-stage prescaler. It operates at up to 3 MHz bus speed, supports single-chip and expanded multiplexed modes, and integrates SCI, SPI, pulse accumulator, COP watchdog, and RTI - used in legacy industrial control, automotive body electronics, and embedded instrumentation.
For engineers reviewing the MC68HC11D0CFNE2 datasheet, MC68HC11D0CFNE2 pinout, MC68HC11D0CFNE2 application, or MC68HC11D0CFNE2 equivalent, key selection criteria include its 40-pin DIP package, -40°C to +85°C industrial temperature range, OTPROM-free ROM execution model, and compatibility with HC11 development toolchains and assembly-level firmware migration paths.
Technical Context
The MC68HC11D0CFNE2 implements a fully static CISC CPU core derived from the Motorola 6800 architecture, supporting 16 addressing modes and a 64 KB linear memory map with separate I/O register space. Its memory organization includes 4 KB ROM (mask-programmed, non-erasable), 192 B SRAM, and no on-chip EEPROM or flash - requiring external nonvolatile storage for field updates.
Peripheral integration centers on deterministic real-time control: the 16-bit timer supports input capture (IC1–IC4), output compare (OC1–OC5), and pulse accumulation; SCI provides NRZ asynchronous serial communication with idle-line and address-mark wakeup; SPI operates in master/slave mode with configurable clock polarity and phase. All peripherals are memory-mapped and interrupt-capable.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | 8-bit CISC, 6800-compatible instruction set, 16 addressing modes - enables direct porting of legacy HC11 assembly code. |
| Bus Speed | Up to 3 MHz - defines maximum instruction throughput and peripheral timing margins in single-chip mode. |
| ROM Size | 4 KB mask-programmed ROM - fixed firmware image; no field reprogramming capability. |
| RAM Size | 192 bytes static RAM - fully retained during STOP/WAIT low-power modes. |
| Operating Temp | -40°C to +85°C - qualified for industrial and under-hood automotive environments. |
| I/O Ports | 4 × 8-bit bidirectional ports (PA–PD) with individual data direction registers - supports parallel interface, GPIO, and bus expansion. |
| Timer System | 16-bit programmable timer with 4-stage prescaler, 5 output compare channels, 4 input capture inputs - enables PWM generation, encoder counting, and time-stamped event logging. |
Pinout & Package
MC68HC11D0CFNE2 is housed in a 40-pin plastic dual in-line package (DIP), Case 711-03, with 0.6-inch width and through-hole mounting. Pin assignments follow standard HC11 DIP layout per Appendix A of MC68HC711D3 Rev. 2.1 datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PA0–PA7 | Port A Data I/O | 8-bit general-purpose bidirectional port; PA0–PA3 also serve as timer input capture/compare pins in alternate functions. |
| PB0–PB7 | Port B Data I/O | 8-bit general-purpose bidirectional port; PB0–PB1 double as SCI transmit/receive lines (TXD/RXD). |
| PC0–PC7 | Port C Data I/O | 8-bit general-purpose bidirectional port; PC0–PC3 double as SPI signals (MISO/MOSI/SCK/SS). |
| PD0–PD7 | Port D Data I/O / Bus Control | 8-bit port with PD0–PD1 as R/W and AS (address strobe); PD6–PD7 support external memory bus in expanded mode. |
| XTAL / EXTAL | Crystal Oscillator Input/Output | Supports 3.2768 kHz to 8 MHz crystal or external clock source - determines E-clock frequency and system timing base. |
| RESET | Active-Low Reset Input | Asynchronous reset assertion clears CPU registers and initializes memory-mapped peripherals to known states. |
| IRQ / XIRQ | Interrupt Request Inputs | IRQ is maskable; XIRQ is non-maskable and doubles as VPP programming voltage input (not used in ROM parts). |
| E | System Clock Output | Provides phase-locked E-clock (½ oscillator frequency) for synchronous peripheral timing and external logic synchronization. |
Key Features
| Feature | Design Value |
|---|---|
| Single-Chip Mode Operation | Enables self-contained operation without external memory or bus logic - reduces BOM count and PCB area in cost-sensitive designs. |
| STOP/WAIT Low-Power Modes | Reduces current consumption to µA-range while preserving RAM and register contents - extends battery life in portable instrumentation. |
| SCI with Wakeup Capability | Supports idle-line and address-mark wakeup from STOP mode - allows remote activation via serial command without continuous polling. |
| Hardware Pulse Accumulator | Counts external pulses independent of CPU execution - ideal for flow metering, tachometer, or RPM measurement with minimal firmware overhead. |
| COP Watchdog Timer | Hardware-based timeout circuit resets MCU if software fails to service it - prevents runaway code in safety-critical control loops. |
Applications
| Industrial Motor Control | Automotive Body Controller |
|---|---|
Use Scenario: Closed-loop DC motor speed regulation using hall-effect encoder feedback and PWM output. IC Role / Device Role / Timing Role: MC68HC11D0CFNE2 executes PID algorithm, reads encoder pulses via pulse accumulator, and generates variable-duty-cycle PWM on OC1–OC3. Use Value: Deterministic 16-bit timer resolution ensures ±1-count encoder accuracy; 192 B RAM stores PID coefficients and runtime variables across power cycles. |
Use Scenario: Centralized control of door locks, window lifts, and interior lighting in passenger vehicles. IC Role / Device Role / Timing Role: MC68HC11D0CFNE2 acts as body ECU main controller, communicating via SCI with dashboard module and driving relays/LEDs through Port D. Use Value: -40°C to +85°C rating ensures reliability in under-dash environments; COP watchdog prevents latch-up during electrical transients. |
| Legacy Test Equipment | Embedded Data Logger |
Use Scenario: Standalone calibration fixture for sensor signal conditioning and pass/fail decision logic. IC Role / Device Role / Timing Role: MC68HC11D0CFNE2 reads analog inputs via external ADC (connected to Port A), processes values against stored thresholds, and drives status LEDs via Port B. Use Value: 4 KB ROM holds fixed calibration tables and test firmware; single-chip mode eliminates external memory timing constraints. |
Use Scenario: Battery-powered environmental monitor recording temperature/humidity at 10-second intervals. IC Role / Device Role / Timing Role: MC68HC11D0CFNE2 wakes periodically via RTI, samples sensors via Port C, stores data in SRAM, and transmits logs via SCI upon host request. Use Value: STOP mode draws <10 µA; 192 B SRAM retains up to 200 timestamped samples without external memory. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC68HC11D3CFNE2 | 4 KB OTPROM instead of mask ROM - supports one-time field firmware update; identical pinout, timing, and peripheral set. | Preferred where firmware revision flexibility is required; not suitable for high-volume cost-sensitive production with fixed code. | Select MC68HC11D3CFNE2 only if post-manufacture firmware patching is needed; otherwise MC68HC11D0CFNE2 offers lower unit cost and guaranteed ROM integrity. |
| MC68HC11E9CP | 68-pin ceramic PGA package; includes 512 B EEPROM and 512 B RAM; same CPU core and peripheral IP but different memory map and packaging. | Used in higher-reliability aerospace/industrial systems requiring EEPROM-based parameter storage and extended thermal cycling. | MC68HC11E9CP requires PCB redesign and firmware adaptation for EEPROM access; MC68HC11D0CFNE2 maintains drop-in compatibility with existing 40-DIP layouts. |
Compared with MC68HC11D3CFNE2 and MC68HC11E9CP, the MC68HC11D0CFNE2 delivers lowest-cost, highest-reliability ROM-based execution in compact 40-DIP form - optimal for fixed-function, high-volume embedded controllers where firmware immutability and layout continuity are critical.
Availability
MC68HC11D0CFNE2 is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, and legacy test equipment requiring stable component supply and long-term obsolescence management.
Supply support for MC68HC11D0CFNE2 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
Freescale Semiconductor (now part of NXP Semiconductors) pioneered 8-bit microcontroller architectures for automotive and industrial markets, emphasizing robustness, real-time determinism, and toolchain maturity.
The MC68HC11 family was designed for deterministic embedded control in resource-constrained environments - prioritizing interrupt latency, peripheral integration, and low-power operation over raw throughput.
FAQ
What is the memory configuration of the MC68HC11D0CFNE2?
The MC68HC11D0CFNE2 contains 4 KB of mask-programmed ROM for fixed firmware storage and 192 bytes of static RAM that retains data during STOP and WAIT low-power modes. It has no on-chip EEPROM or flash memory, and no user-modifiable nonvolatile storage - all program code is factory-programmed and immutable in the field.
Does the MC68HC11D0CFNE2 support in-circuit programming?
No, the MC68HC11D0CFNE2 does not support in-circuit programming. Its 4 KB ROM is mask-programmed during fabrication and cannot be erased or rewritten. Unlike OTPROM variants such as MC68HC11D3CFNE2, the MC68HC11D0CFNE2 firmware is permanently fixed at manufacture.
What package type is used for the MC68HC11D0CFNE2?
The MC68HC11D0CFNE2 uses a 40-pin plastic dual in-line package (DIP), Case 711-03, with 0.6-inch body width and through-hole mounting. This package matches the pinout and mechanical footprint of other HC11 DIP variants, enabling direct replacement in legacy PCB designs.
Can the MC68HC11D0CFNE2 operate in expanded multiplexed bus mode?
Yes, the MC68HC11D0CFNE2 supports expanded multiplexed bus mode using Port D and control signals (R/W, AS) to interface with external memory or peripherals. In this mode, PD0–PD7 become time-multiplexed address/data lines, requiring external latching logic - distinct from its default single-chip mode operation.
What is the maximum operating frequency of the MC68HC11D0CFNE2?
The MC68HC11D0CFNE2 has a nominal bus speed of 3 MHz, corresponding to a maximum oscillator frequency of 6 MHz (since E-clock = ½ oscillator frequency). Its fully static design permits operation down to DC - enabling ultra-low-power STOP mode with zero clock activity while preserving RAM and register state.
MC68HC11D0CFNE2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 44-LCC (J-Lead)
- Series:
- HC11
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- HC11
- Core Size:
- 8-Bit
- Speed:
- 2MHz
- Connectivity:
- SCI, SPI
- Peripherals:
- POR, WDT
- Number of I/O:
- 26
- Program Memory Size:
- -
- Program Memory Type:
- ROMless
- EEPROM Size:
- -
- RAM Size:
- 192 x 8
- Voltage - Supply (Vcc/Vdd):
- 4.5V ~ 5.5V
- Data Converters:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC68HC11D0CFNE2 FAQ
1.How can I place an order for MC68HC11D0CFNE2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC68HC11D0CFNE2 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 MC68HC11D0CFNE2 reliable?
The price and inventory of MC68HC11D0CFNE2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC68HC11D0CFNE2 is usually 5 days.
3.What payment methods are accepted for MC68HC11D0CFNE2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC68HC11D0CFNE2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC68HC11D0CFNE2?
MC68HC11D0CFNE2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC68HC11D0CFNE2 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 MC68HC11D0CFNE2?
For technical support, including MC68HC11D0CFNE2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC68HC11D0CFNE2 requirements.
6.How does Aetrix verify that MC68HC11D0CFNE2 is sourced from the original manufacturer or authorized distributors?
All MC68HC11D0CFNE2 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 MC68HC11D0CFNE2 meets industry standards.
7.What is the process for return or replacement of MC68HC11D0CFNE2?
All MC68HC11D0CFNE2 units undergo pre-shipment inspection (PSI). If there is an issue with MC68HC11D0CFNE2, 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 MC68HC11D0CFNE2 part is unused and in its original packaging.
Return procedure for MC68HC11D0CFNE2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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