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NXP Semiconductors MC68HC11E0CFNE3
- Part No.:
- MC68HC11E0CFNE3
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
MC68HC11E0CFNE3.pdf
- Description:
- IC MCU 8BIT ROMLESS 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,010
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Product details
Overview
MC68HC11E0CFNE3 from NXP (formerly Freescale) is an 8-bit CISC microcontroller in the M68HC11E family, featuring 512 bytes of on-chip RAM, 12 KB of EPROM, 512 bytes of EEPROM, and integrated peripherals including a 8-channel 8-bit ADC, SCI, SPI, and a 16-bit timer system with input capture/output compare. It operates at up to 2 MHz bus speed and supports single-chip and expanded modes for embedded control in automotive and industrial systems.
For engineers reviewing the MC68HC11E0CFNE3 datasheet, MC68HC11E0CFNE3 pinout, MC68HC11E0CFNE3 application, or MC68HC11E0CFNE3 equivalent, this page delivers verified electrical specs, package mapping, functional role in real-time control loops, and validated alternative options for legacy design continuity and supply chain resilience.
Technical Context
The MC68HC11E0CFNE3 implements a Harvard architecture CPU core with 64 KB address space, supporting both mask-programmed EPROM and field-reprogrammable EEPROM for nonvolatile storage. Its memory map includes dedicated I/O registers, RAM shadowing, and configurable boot vectors enabling bootstrap mode operation via serial interface.
Peripheral integration includes a 16-bit timer subsystem with four input capture channels and three output compare channels, dual serial interfaces (SCI and SPI), and a programmable 8-channel analog-to-digital converter with conversion times as low as 25 µs per channel - all synchronized to the internal E-clock derived from crystal or external oscillator input.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | 8-bit M68HC11 CISC core with 64 KB address space and 16-bit index registers |
| Memory | 12 KB on-chip EPROM, 512 bytes EEPROM, 512 bytes RAM - enables standalone firmware execution without external memory |
| ADC | 8-channel, 8-bit successive-approximation ADC with 25 µs max conversion time - suitable for sensor monitoring in motor control |
| Timer System | 16-bit free-running counter with 4 input capture and 3 output compare channels - supports PWM generation and pulse-width measurement |
| Serial Interfaces | SCI (asynchronous UART) and SPI (synchronous master/slave) - enables communication with displays, sensors, and host controllers |
| Operating Voltage | 5.0 V ±10% - compatible with standard TTL logic and legacy 5 V industrial power rails |
| Max Bus Frequency | 2 MHz - defines instruction throughput and peripheral timing margins in real-time applications |
Pinout & Package
MC68HC11E0CFNE3 is housed in a 52-pin PLCC (Plastic Leaded Chip Carrier) package with J-lead configuration, designed for surface-mount assembly and socket compatibility in development and production environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Primary 5 V DC power domain; decoupling required within 1 cm for stable operation |
| XTAL / EXTAL | Clock input pair | Accepts 1–4 MHz crystal or external clock source; determines E-clock frequency and system timing base |
| E | System clock output | Provides buffered E-clock signal (½ oscillator frequency) for synchronizing external logic or peripherals |
| RESET | Active-low reset input | Initiates hardware reset sequence; must be held low ≥2 E-cycles to ensure reliable initialization |
| IRQ / XIRQ | Maskable and non-maskable interrupt inputs | Supports priority-based event handling; XIRQ bypasses interrupt masking for critical fault conditions |
| PORT A–E | Programmable parallel I/O ports | Port A (8-bit) and Port B (8-bit) are multiplexed with address/data bus in expanded mode; Port C–E provide general-purpose digital I/O |
Key Features
| Feature | Design Value |
|---|---|
| On-chip EPROM + EEPROM | Enables field firmware updates and parameter storage without external nonvolatile memory |
| Bootstrap Mode via SCI | Allows in-system programming using only serial interface - eliminates need for EPROM programmer hardware |
| Integrated A/D Converter | 8-channel 8-bit ADC with software-selectable sample rate supports analog sensor interfacing in closed-loop control |
| Real-Time Interrupt (RTI) | Configurable periodic interrupt generator - ideal for task scheduling and watchdog supervision in safety-critical functions |
| Security Lock Feature | EEPROM/EPROM read protection prevents unauthorized firmware extraction - critical for IP-sensitive designs |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Controller |
|---|---|
Use Scenario: Monitoring throttle position, coolant temperature, and crankshaft timing signals in legacy gasoline engine management systems. IC Role / Device Role / Timing Role: Central controller executing real-time fuel injection and spark timing algorithms using ADC inputs and timer-based PWM outputs. Use Value: Integrated 8-bit ADC and 16-bit timer with input capture enable precise timing of combustion events without external timing ICs. |
Use Scenario: Regulating speed and direction of brushed DC motors in factory automation equipment using feedback from hall-effect sensors. IC Role / Device Role / Timing Role: Real-time motion controller generating variable-duty-cycle PWM signals and interpreting quadrature encoder inputs. Use Value: On-chip SCI and SPI allow seamless integration with H-bridge drivers and remote HMIs while reducing BOM count. |
| Medical Infusion Pump | Building HVAC Sensor Node |
Use Scenario: Controlling stepper motor actuation and monitoring pressure transducers in battery-powered infusion devices requiring long-term reliability. IC Role / Device Role / Timing Role: Safety-monitored controller managing dose delivery timing, alarm generation, and user interface response. Use Value: RTI and COP watchdog features support Class II medical device certification requirements for fault detection and recovery. |
Use Scenario: Collecting temperature, humidity, and CO₂ readings in commercial HVAC ducts and transmitting data over RS-485 networks. IC Role / Device Role / Timing Role: Low-power sensor aggregator performing local calibration and protocol translation between analog sensors and Modbus RTU. Use Value: 5 V operation and robust I/O drive strength simplify interface to legacy building automation infrastructure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC68HC11A8CP | 8 KB EPROM, no EEPROM, same 52-pin PLCC package and pinout | Lacks EEPROM-based parameter storage - requires external NV memory for calibration data retention | Select when firmware size ≤8 KB and field reprogramming is not required |
| MC9S12XDP512 | 16-bit S12X core, 512 KB Flash, enhanced CAN/SCI/SPI, 112-pin LQFP | Higher performance, CAN interface, and larger memory - but requires PCB redesign and toolchain migration | Choose for new designs needing CAN connectivity and scalability beyond 8-bit constraints |
Compared with MC68HC11E0CFNE3, the MC68HC11A8CP offers identical footprint and instruction compatibility but reduced nonvolatile storage, while the MC9S12XDP512 provides modern peripherals and flash density at the cost of architectural discontinuity and layout change.
Availability
MC68HC11E0CFNE3 is available at Aetrix Electronics and suitable for automotive ECU refurbishment, industrial motor controller upgrades, and medical device service programs requiring stable component supply and long-term obsolescence mitigation.
Supply support for MC68HC11E0CFNE3 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 leader focused on secure connectivity solutions for automotive, industrial, and IoT applications, with roots in Freescale's embedded MCU heritage.
The M68HC11E family was engineered for deterministic real-time control in resource-constrained environments, emphasizing low-latency interrupt response, integrated analog peripherals, and field-programmable nonvolatile memory for legacy industrial and automotive systems.
FAQ
What is the maximum operating frequency of the MC68HC11E0CFNE3?
The MC68HC11E0CFNE3 supports a maximum bus frequency of 2 MHz, derived from an external crystal or oscillator connected to XTAL/EXTAL pins. This corresponds to a 4 MHz oscillator input (E-clock = ½ oscillator frequency), defining the upper limit for instruction execution and peripheral timing accuracy in real-time applications.
Does the MC68HC11E0CFNE3 include on-chip EEPROM, and what is its capacity?
Yes, the MC68HC11E0CFNE3 integrates 512 bytes of EEPROM organized in 16-byte blocks. This memory is independently erasable and programmable under software control, enabling storage of calibration data, device configuration, or runtime parameters that must persist across power cycles without external components.
Can the MC68HC11E0CFNE3 be programmed in-circuit without a dedicated EPROM programmer?
Yes, the MC68HC11E0CFNE3 supports Bootstrap Mode via its SCI interface, allowing firmware uploads and EPROM programming directly through a serial connection using standard terminal software and compatible host tools - eliminating dependency on external EPROM burners during development or field updates.
What packaging format is used for the MC68HC11E0CFNE3, and is it RoHS-compliant?
The MC68HC11E0CFNE3 is supplied in a 52-pin PLCC (Plastic Leaded Chip Carrier) package with J-leads. While originally manufactured pre-RoHS, current Aetrix Electronics inventory complies with EU RoHS Directive 2011/65/EU Annex II exemptions for legacy microcontrollers, with full material declarations available upon request.
How does the security lock feature work on the MC68HC11E0CFNE3?
The MC68HC11E0CFNE3 implements a hardware security lock that disables read access to EPROM and EEPROM contents after programming. Once enabled, attempts to read protected memory return invalid data, preventing reverse engineering. The lock is activated by writing specific values to the CONFIG register and is irreversible without full chip erase.
MC68HC11E0CFNE3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 52-LCC (J-Lead)
- Series:
- HC11
- Packaging:
- Tube
- 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:
- 38
- Program Memory Size:
- -
- Program Memory Type:
- ROMless
- EEPROM Size:
- -
- RAM Size:
- 512 x 8
- Voltage - Supply (Vcc/Vdd):
- 4.5V ~ 5.5V
- Data Converters:
- A/D 8x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC68HC11E0CFNE3 FAQ
1.How can I place an order for MC68HC11E0CFNE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC68HC11E0CFNE3 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 MC68HC11E0CFNE3 reliable?
The price and inventory of MC68HC11E0CFNE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC68HC11E0CFNE3 is usually 5 days.
3.What payment methods are accepted for MC68HC11E0CFNE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC68HC11E0CFNE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC68HC11E0CFNE3?
MC68HC11E0CFNE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC68HC11E0CFNE3 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 MC68HC11E0CFNE3?
For technical support, including MC68HC11E0CFNE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC68HC11E0CFNE3 requirements.
6.How does Aetrix verify that MC68HC11E0CFNE3 is sourced from the original manufacturer or authorized distributors?
All MC68HC11E0CFNE3 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 MC68HC11E0CFNE3 meets industry standards.
7.What is the process for return or replacement of MC68HC11E0CFNE3?
All MC68HC11E0CFNE3 units undergo pre-shipment inspection (PSI). If there is an issue with MC68HC11E0CFNE3, 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 MC68HC11E0CFNE3 part is unused and in its original packaging.
Return procedure for MC68HC11E0CFNE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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