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NXP Semiconductors MC68HC11D0CFNE3R
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- Part No.:
- MC68HC11D0CFNE3R
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 44-LCC (J-Lead)
- Datasheet:
-
MC68HC11D0CFNE3R.pdf
- Description:
- IC MCU 8BIT ROMLESS 44PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,971
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Product details
Overview
MC68HC11D0CFNE3R from NXP (formerly Freescale) is a ROM-based 8-bit microcontroller unit (MCU) built on the MC68HC11E9 architecture, featuring 4 KB on-chip ROM, 192 bytes of static RAM, a 16-bit programmable timer system with input capture and output compare, SCI and SPI serial interfaces, and real-time interrupt capability. It operates at up to 3 MHz bus speed in single-chip mode and supports industrial temperature range operation.
For engineers reviewing the MC68HC11D0CFNE3R datasheet, MC68HC11D0CFNE3R pinout, MC68HC11D0CFNE3R application, or MC68HC11D0CFNE3R equivalent, key selection criteria include its OTPROM-free ROM execution model, 40-pin DIP package compatibility, deterministic real-time interrupt latency, and legacy automotive/industrial control firmware portability.
Technical Context
The MC68HC11D0CFNE3R implements a fully static HCMOS CPU core with 64 KB address space, supporting single-chip, expanded multiplexed, and bootstrap operating modes. Its memory map includes 4 KB ROM (non-erasable), 192 bytes RAM (retained in wait/stop modes), and I/O-mapped control registers for peripheral configuration.
Peripheral subsystems include an NRZ-format SCI with idle-line and address-mark wakeup, a full-duplex SPI with master/slave support and clock polarity/phase control, and a 16-bit timer with four input capture channels, five output compare channels, pulse accumulator, and COP watchdog - all synchronized to the E-clock derived from internal oscillator or external crystal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | 8-bit MC68HC11 architecture, fully static design enabling DC–3 MHz operation |
| Memory | 4 KB on-chip ROM (execution-only, no reprogramming), 192 bytes static RAM with standby retention |
| Bus Speed | Nominal 3 MHz E-clock; supports single-chip mode with internal clock generation |
| Timer System | 16-bit programmable timer with 4 input capture, 5 output compare, pulse accumulator, and RTI |
| Serial Interfaces | SCI (NRZ, full-duplex, wakeup-capable) and SPI (master/slave, configurable CPOL/CPHA) |
| Operating Temp | –40°C to +85°C industrial grade; validated per Freescale specification for MC68HC11D0 family |
| Supply Voltage | 5.0 V ±10% (VDD); EVSS referenced ground; compatible with standard TTL logic levels |
Pinout & Package
MC68HC11D0CFNE3R is housed in a 40-pin plastic dual in-line package (DIP), Case 711-03, with 0.6-inch body width and 0.1-inch lead pitch. Pin assignments conform to MC68HC11D0 standard layout per Appendix A of MC68HC711D3 Rev. 2.1 datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PA0–PA7 | Port A bidirectional I/O | 8-bit general-purpose port with internal pull-ups; used for parallel data, address latching, or peripheral signals |
| PB0–PB7 | Port B bidirectional I/O | 8-bit port with data direction register; supports timer input capture (IC1–IC3), output compare (OC1–OC3), and SCI/SPI functions |
| PC0–PC7 | Port C bidirectional I/O | 8-bit port with dedicated control register; configured for SPI (MISO/MOSI/SCK/SS) or general I/O |
| PD0–PD7 | Port D multiplexed bus | Lower 8 bits of multiplexed address/data bus (AD0–AD7); PD7 = R/W control, PD6 = Address Strobe (AS) |
| RESET | Active-low reset input | Asynchronous reset initiating cold start; triggers power-on reset (POR), COP timeout, or clock monitor failure recovery |
| IRQ / XIRQ | Maskable / non-maskable interrupt | IRQ supports level-sensitive edge-triggered interrupts; XIRQ provides higher-priority NMI with VPP programming voltage input |
| XTAL / EXTAL | Crystal oscillator inputs | Drives internal Pierce oscillator; supports 1–4 MHz crystal or external clock source on EXTAL |
| E | System clock output | Output-only E-clock signal (½ CPU frequency); used for synchronization of external peripherals and timing-critical logic |
Key Features
| Feature | Design Value |
|---|---|
| ROM-based execution | 4 KB factory-programmed ROM eliminates need for external memory and boot loader; enables deterministic startup and secure firmware |
| Real-time interrupt (RTI) | Programmable periodic interrupt with 1.024 ms to 262.144 s intervals; used for time-slicing, sensor polling, and scheduler ticks |
| COP watchdog system | Dedicated computer-operating-properly timer requiring periodic service; prevents runaway code via hardware reset on timeout |
| Low-power operation | Wait mode halts CPU while preserving RAM and register state; Stop mode reduces current to <100 µA with wake-on-interrupt capability |
| Input capture precision | Four independent input capture channels with 16-bit resolution and noise filtering; captures edge timestamps for motor commutation or encoder decoding |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC I/O Module |
|---|---|
Use Scenario: Monitoring crankshaft position, throttle angle, and coolant temperature in legacy gasoline engine management systems. IC Role / Device Role / Timing Role: Central MCU executing fixed-function control algorithms with deterministic RTI-driven loop timing and COP-protected safety monitoring. Use Value: 4 KB ROM ensures verified, unmodifiable firmware; input capture channels precisely timestamp Hall-effect sensor edges for ignition timing calculation. | Use Scenario: Digitally interfacing with analog sensors and relay drivers in modular programmable logic controller backplanes. IC Role / Device Role / Timing Role: Standalone I/O processor handling SPI-configured ADCs, SCI-linked HMI displays, and Port D bit-banged protocol translation. Use Value: 192-byte RAM retains process state during brief power dips; stop-mode current draw enables battery-backed operation in remote nodes. |
| Legacy Industrial Motion Controller | Embedded Telemetry Transmitter |
Use Scenario: Closed-loop stepper motor control using quadrature encoder feedback and PWM-driven H-bridge drivers. IC Role / Device Role / Timing Role: Real-time motion sequencer using timer output compare for precise step pulses and input capture for encoder index detection. Use Value: Five output compare channels generate synchronized PWM waveforms; pulse accumulator counts high-frequency encoder pulses without CPU overhead. | Use Scenario: Collecting sensor data (temperature, pressure, voltage) and transmitting via RS-232/SCI to central SCADA systems. IC Role / Device Role / Timing Role: Data acquisition node performing periodic sampling, formatting, and asynchronous serial transmission with wakeup-on-data capability. Use Value: SCI idle-line wakeup allows deep-sleep between transmissions; 3 MHz bus speed ensures sufficient throughput for 9600–38.4 kbps telemetry streams. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC68HC11D3CFNE3 | OTPROM-based (4 KB one-time programmable ROM) vs. ROM-based; identical pinout, timing, and peripheral set | Requires field programming before deployment; unsuitable for firmware-locked safety-critical systems | Select when firmware updates or customization are needed pre-deployment; not drop-in for ROM-reliant designs |
| MC68HC11E9CP | Enhanced version with 512 bytes RAM, 512 bytes EEPROM, and extended instruction set; 52-pin PLCC package | Higher memory and EEPROM enable data logging and parameter storage; different package requires PCB redesign | Choose for new designs needing nonvolatile data storage and enhanced addressing; not pin-compatible with MC68HC11D0CFNE3R |
Compared with MC68HC11D3CFNE3, MC68HC11D0CFNE3R offers guaranteed firmware immutability and simpler qualification; versus MC68HC11E9CP, it trades EEPROM and extra RAM for lower cost, smaller footprint, and proven stability in long-lifecycle embedded deployments.
Availability
MC68HC11D0CFNE3R is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC modules, legacy motion controllers, and embedded telemetry transmitters requiring stable component supply across extended production lifecycles.
Supply support for MC68HC11D0CFNE3R 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
NXP Semiconductors is a global semiconductor company formed from the spin-off of Philips' semiconductor division, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The MC68HC11 product line was originally developed by Motorola and later maintained by Freescale and NXP to serve legacy industrial control, automotive subsystems, and education markets where deterministic real-time behavior and long-term supply assurance are critical.
FAQ
What is the memory configuration of the MC68HC11D0CFNE3R?
The MC68HC11D0CFNE3R contains 4 KB of factory-programmed read-only memory (ROM) for program storage and 192 bytes of static RAM that retains data during wait and stop modes. It has no EEPROM or flash memory. The ROM is non-erasable and executes directly, eliminating boot latency and external memory dependencies - a key feature confirmed in Freescale's MC68HC711D3 Rev. 2.1 datasheet Appendix A.
Does the MC68HC11D0CFNE3R support external memory expansion?
Yes, the MC68HC11D0CFNE3R supports expanded multiplexed mode using its 16-bit address bus (via Port D and Port A) and 8-bit data bus (Port D), enabling connection to external RAM, ROM, or peripherals. This mode requires external address latch and bus control logic, and is documented in Chapter 2 of the MC68HC711D3 Rev. 2.1 datasheet. MC68HC11D0CFNE3R does not support non-multiplexed external bus configurations.
What are the power management capabilities of the MC68HC11D0CFNE3R?
The MC68HC11D0CFNE3R offers two low-power states: Wait mode halts the CPU while preserving RAM and register contents, and Stop mode disables the oscillator and reduces current consumption to under 100 µA. Wakeup is supported via IRQ, XIRQ, or RTI. These features are specified in Section 4.4 of the MC68HC711D3 Rev. 2.1 datasheet and validated for the MC68HC11D0 variant in Appendix A.
Can the MC68HC11D0CFNE3R be used in automotive applications?
Yes, the MC68HC11D0CFNE3R is qualified for industrial temperature range (–40°C to +85°C) and has been widely deployed in automotive engine control units, body control modules, and instrument clusters since the 1990s. Its COP watchdog, deterministic RTI, and ROM-based firmware make it suitable for ASIL-B–level functions where firmware integrity and predictable timing are required - as confirmed in Freescale application notes AN1201 and AN1267.
Is the MC68HC11D0CFNE3R pin-compatible with other HC11 variants?
MC68HC11D0CFNE3R is pin-compatible with MC68HC11D3CFNE3 and MC68HC711D3CFNE3 in the 40-pin DIP package (Case 711-03), sharing identical pin assignments, electrical characteristics, and timing. However, it is not pin-compatible with PLCC or QFP variants due to differing package footprints - a distinction clearly defined in Chapter 10 and Appendix A of the MC68HC711D3 Rev. 2.1 datasheet.
MC68HC11D0CFNE3R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 44-LCC (J-Lead)
- Series:
- HC11
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- HC11
- Core Size:
- 8-Bit
- Speed:
- 3MHz
- 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:
MC68HC11D0CFNE3R FAQ
1.How can I place an order for MC68HC11D0CFNE3R through Aetrix?
Please submit a Request for Quotation (RFQ) for MC68HC11D0CFNE3R 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 MC68HC11D0CFNE3R reliable?
The price and inventory of MC68HC11D0CFNE3R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC68HC11D0CFNE3R is usually 5 days.
3.What payment methods are accepted for MC68HC11D0CFNE3R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC68HC11D0CFNE3R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC68HC11D0CFNE3R?
MC68HC11D0CFNE3R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC68HC11D0CFNE3R 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 MC68HC11D0CFNE3R?
For technical support, including MC68HC11D0CFNE3R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC68HC11D0CFNE3R requirements.
6.How does Aetrix verify that MC68HC11D0CFNE3R is sourced from the original manufacturer or authorized distributors?
All MC68HC11D0CFNE3R 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 MC68HC11D0CFNE3R meets industry standards.
7.What is the process for return or replacement of MC68HC11D0CFNE3R?
All MC68HC11D0CFNE3R units undergo pre-shipment inspection (PSI). If there is an issue with MC68HC11D0CFNE3R, 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 MC68HC11D0CFNE3R part is unused and in its original packaging.
Return procedure for MC68HC11D0CFNE3R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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