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NXP Semiconductors MC68HC11E1CFNE3
- Part No.:
- MC68HC11E1CFNE3
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
MC68HC11E1CFNE3.pdf
- Description:
- IC MCU 8BIT ROMLESS 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,933
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Product details
Overview
MC68HC11E1CFNE3 from Freescale Semiconductor is an 8-bit microcontroller in the M68HC11E family, featuring 512 bytes of on-chip RAM, 12 KB of EPROM, and integrated peripherals including a 8-channel 8-bit ADC, two serial interfaces (SCI and SPI), and a 16-bit timer system with input capture/output compare. It operates at up to 2 MHz bus frequency and supports single-chip and expanded modes for embedded control in automotive and industrial systems.
For engineers reviewing the MC68HC11E1CFNE3 datasheet, MC68HC11E1CFNE3 pinout, MC68HC11E1CFNE3 application, or MC68HC11E1CFNE3 equivalent, key selection criteria include EPROM-based program storage, on-chip ADC resolution and channel count, SCI/SPI interface availability, low-power wait/stop modes, and compatibility with legacy HC11 development tools and bootstrap programming.
Technical Context
The MC68HC11E1CFNE3 implements the Motorola 68HC11 CPU core with full instruction set compatibility, supporting direct, indexed, extended, and inherent addressing modes. Its memory map includes 512 B RAM, 12 KB EPROM, and 256 B EEPROM - all mapped into a unified 64 KB address space.
Peripherals include an 8-channel 8-bit analog-to-digital converter with programmable conversion sequence, a full-duplex asynchronous SCI with baud rate generation and wakeup capability, and a synchronous SPI master/slave interface. The 16-bit timer subsystem provides four input capture, five output compare channels, and real-time interrupt support.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Motorola 68HC11 8-bit CISC architecture with 64 KB address space |
| Max Bus Frequency | 2 MHz - determines maximum instruction throughput and peripheral timing margins |
| On-Chip Memory | 12 KB EPROM + 512 B RAM + 256 B EEPROM - enables standalone operation without external program memory |
| ADC | 8-channel, 8-bit successive-approximation ADC with software-selectable conversion sequence |
| Serial Interfaces | 1 × SCI (asynchronous UART) + 1 × SPI (synchronous master/slave) - supports sensor interfacing and daisy-chain communication |
| Timer System | 16-bit timer with 4 input capture / 5 output compare channels + RTI - enables precise event timing and PWM generation |
| Power Modes | Wait and Stop modes with wake-on-interrupt - reduces current draw to ≤10 µA in Stop mode for battery-powered applications |
Pinout & Package
MC68HC11E1CFNE3 is housed in a 52-pin PLCC (Plastic Leaded Chip Carrier) package with 0.5-inch body size and J-lead configuration, suitable for socketed or surface-mount PCB assembly in industrial control modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Single 5 V ±10% supply required; decoupling essential for noise-sensitive analog and digital operation |
| XTAL, EXTAL | Crystal oscillator inputs | Supports 1–4 MHz crystal or external clock source for system timing reference |
| E | System clock output | Provides buffered E-clock (½ bus frequency) for synchronization of external logic or peripherals |
| RESET | Active-low reset input | Asynchronous reset assertion clears CPU registers and initializes memory map and peripheral control registers |
| IRQ, XIRQ | Maskable and non-maskable interrupt inputs | Enable prioritized response to external events; XIRQ bypasses I-mask for critical fault handling |
| PORT A–E | Programmable bidirectional I/O ports | Port A (8-bit) and Port B (8-bit) support handshake protocols; Port C–E provide general-purpose or peripheral-mapped I/O |
Key Features
| Feature | Design Value |
|---|---|
| On-chip EPROM programming | Field-programmable 12 KB EPROM via bootstrap mode using standard SCI interface - eliminates need for external programmer hardware |
| Integrated ADC with flexible sequencing | 8-channel 8-bit converter supports single-shot or continuous conversion across user-defined channel order - simplifies sensor data acquisition without external mux or controller |
| Dual serial interfaces | Independent SCI (UART) and SPI controllers allow concurrent communication with RS-232 devices and daisy-chained peripherals - reduces external component count |
| Real-time interrupt (RTI) | Configurable periodic interrupt sourced from internal timer prescaler - enables deterministic task scheduling in time-critical control loops |
| Security lock feature | EPROM security bit prevents readout of program memory after programming - protects firmware IP in deployed systems |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC I/O Module |
|---|---|
Use Scenario: Monitoring engine RPM, throttle position, and coolant temperature in legacy 12 V automotive systems. IC Role / Device Role / Timing Role: Central controller executing closed-loop fuel injection timing and spark advance algorithms using ADC inputs and timer-based PWM outputs. Use Value: On-chip 12 KB EPROM stores calibrated lookup tables; 2 MHz bus speed meets sub-100 µs control cycle requirements; RTI ensures deterministic sampling intervals. | Use Scenario: Digitally monitoring and controlling discrete sensors and actuators in factory automation cabinets. IC Role / Device Role / Timing Role: Standalone I/O processor managing 8 analog sensor inputs and 8 digital outputs via PORT A–E, communicating status over SCI to host HMI. Use Value: Integrated ADC and GPIO eliminate external signal conditioning ICs; Wait mode reduces standby power to <50 µA during idle periods. |
| Medical Infusion Pump Controller | Legacy Industrial Data Logger |
Use Scenario: Regulating motor-driven fluid delivery while monitoring pressure and flow sensors in battery-powered portable equipment. IC Role / Device Role / Timing Role: Safety-critical timing controller using Stop mode for ultra-low-power sleep between dose cycles, waking on timer or button press. Use Value: EEPROM stores calibration constants and usage logs; dual serial interfaces enable both local debug (SCI) and remote data upload (SPI to flash memory). | Use Scenario: Recording temperature, humidity, and voltage readings from analog sensors at fixed intervals in unattended field installations. IC Role / Device Role / Timing Role: Autonomous data acquisition node using RTI-triggered ADC conversions and SPI-driven external EEPROM writes. Use Value: 256 B on-chip EEPROM retains last 100 readings during power loss; bootstrap programming allows field firmware updates via RS-232. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC68HC11E9CP | Same core and pinout; 512 B RAM, 512 B EEPROM, no EPROM - uses external program memory or OTPROM variant | Lacks on-chip EPROM; requires external ROM or PROM burner for firmware loading | Select when firmware size exceeds 12 KB or when field reprogramming is unnecessary |
| MC68HC11F1CFN | Enhanced version with 20 KB ROM, 1 KB RAM, added CAN interface, and higher E-clock (3.2 MHz) | Includes CAN 2.0A controller; not pin-compatible due to additional CANH/CANL pins and larger 64-pin package | Choose for new designs requiring CAN bus connectivity and increased memory - requires PCB redesign |
Compared with MC68HC11E1CFNE3, the MC68HC11E9CP offers identical packaging and instruction compatibility but removes EPROM in favor of external code storage, while the MC68HC11F1CFN adds CAN and memory at the cost of pinout change and higher power - making MC68HC11E1CFNE3 optimal for cost-sensitive, EPROM-dependent legacy replacements.
Availability
MC68HC11E1CFNE3 is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC I/O modules, medical infusion pump controllers, and legacy industrial data loggers requiring stable component supply and long-term obsolescence management.
Supply support for MC68HC11E1CFNE3 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) was a leading designer of embedded processors and analog/mixed-signal ICs, known for the 68000 and 68HCxx families targeting automotive, industrial, and consumer applications.
The MC68HC11E1CFNE3 belongs to the M68HC11E microcontroller product line, designed specifically for cost-effective, EPROM-based embedded control in resource-constrained environments where field programmability and peripheral integration are critical.
FAQ
What is the maximum operating frequency of the MC68HC11E1CFNE3?
The MC68HC11E1CFNE3 supports a maximum bus frequency of 2 MHz, derived from an external crystal or clock source applied to the XTAL/EXTAL pins. This corresponds to a 4 MHz oscillator input with internal divide-by-two, enabling reliable execution of the full 68HC11 instruction set while maintaining timing margins for on-chip peripherals like the ADC and timer subsystem. The MC68HC11E1CFNE3 does not support higher frequencies without violating AC timing specifications.
Does the MC68HC11E1CFNE3 include on-chip EEPROM?
Yes, the MC68HC11E1CFNE3 integrates 256 bytes of EEPROM for non-volatile data storage, separate from its 12 KB EPROM program memory and 512 bytes of RAM. This EEPROM is used to retain calibration values, device configuration, or operational logs across power cycles. Programming and erasure are controlled via dedicated EEPROM control registers and require specific command sequences documented in the M68HC11E Family Data Sheet Rev. 5.1.
How is firmware programmed into the MC68HC11E1CFNE3 EPROM?
Firmware is programmed into the MC68HC11E1CFNE3 EPROM using bootstrap mode, initiated by holding MODA and MODB low during reset. The device then enters a built-in serial bootloader that accepts Intel HEX or S-record data via the SCI interface at 1200 or 2400 baud. No external EPROM programmer is required - the MC68HC11E1CFNE3 self-programs its 12 KB EPROM using on-chip high-voltage generation circuitry.
What low-power modes does the MC68HC11E1CFNE3 support?
The MC68HC11E1CFNE3 supports two hardware low-power modes: Wait mode (CPU halted, peripherals active, ~1 mA typical) and Stop mode (entire chip clock-gated except real-time interrupt circuitry, ≤10 µA typical). Both modes are entered via SWI or STOP instructions and exited by interrupts including IRQ, XIRQ, RTI, or SCI receive. These modes are essential for battery-operated applications such as portable medical devices or remote sensors where the MC68HC11E1CFNE3 serves as the primary controller.
Is the MC68HC11E1CFNE3 pin-compatible with other M68HC11E family members?
Yes, the MC68HC11E1CFNE3 shares the same 52-pin PLCC footprint and signal mapping with other members of the M68HC11E family rated for the same package, including the MC68HC11E9 and MC68HC11E20. Pin compatibility extends to power, clock, reset, interrupt, and all port signals - allowing drop-in replacement where memory configuration (EPROM vs. ROM vs. OTP) and voltage rating (5 V vs. extended 3–5.5 V) align with system requirements. Always verify memory map and initialization behavior per datasheet revision.
MC68HC11E1CFNE3 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:
- 512 x 8
- 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:
MC68HC11E1CFNE3 FAQ
1.How can I place an order for MC68HC11E1CFNE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC68HC11E1CFNE3 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 MC68HC11E1CFNE3 reliable?
The price and inventory of MC68HC11E1CFNE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC68HC11E1CFNE3 is usually 5 days.
3.What payment methods are accepted for MC68HC11E1CFNE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC68HC11E1CFNE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC68HC11E1CFNE3?
MC68HC11E1CFNE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC68HC11E1CFNE3 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 MC68HC11E1CFNE3?
For technical support, including MC68HC11E1CFNE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC68HC11E1CFNE3 requirements.
6.How does Aetrix verify that MC68HC11E1CFNE3 is sourced from the original manufacturer or authorized distributors?
All MC68HC11E1CFNE3 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 MC68HC11E1CFNE3 meets industry standards.
7.What is the process for return or replacement of MC68HC11E1CFNE3?
All MC68HC11E1CFNE3 units undergo pre-shipment inspection (PSI). If there is an issue with MC68HC11E1CFNE3, 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 MC68HC11E1CFNE3 part is unused and in its original packaging.
Return procedure for MC68HC11E1CFNE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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