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NXP Semiconductors MC68HC11E1CFN3
- Part No.:
- MC68HC11E1CFN3
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
MC68HC11E1CFN3.pdf
- Description:
- IC MCU 8BIT ROMLESS 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,769
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Product details
Overview
MC68HC11E1CFN3 from Freescale Semiconductor is an 8-bit microcontroller with 512 bytes of on-chip RAM, 12 KB of EPROM, and integrated A/D converter, SCI, SPI, and timer subsystems. It operates at up to 2 MHz bus speed in single-chip mode and supports automotive and industrial control applications requiring embedded real-time I/O management.
For engineers reviewing the MC68HC11E1CFN3 datasheet, MC68HC11E1CFN3 pinout, MC68HC11E1CFN3 application, or MC68HC11E1CFN3 equivalent, key selection criteria include EPROM programmability, 8-channel 8-bit ADC resolution, single-chip mode operation, and compatibility with legacy M68HC11 development tools like EVBU and PCbug11.
Technical Context
The MC68HC11E1CFN3 implements a Harvard architecture CPU core with 16-bit address space, supporting both single-chip and expanded bus modes. Its memory map includes 512-byte RAM, 12 KB EPROM, and 256-byte EEPROM - all accessible without external logic in single-chip mode.
On-chip peripherals include an 8-channel 8-bit analog-to-digital converter with software-selectable conversion time, full-duplex asynchronous serial interface (SCI) with wakeup capability, synchronous serial peripheral interface (SPI), and a 16-bit timer system with input capture, output compare, pulse accumulator, and real-time interrupt functions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | 8-bit M68HC11 architecture with 16-bit address bus and 64 KB linear address space |
| Max Bus Frequency | 2 MHz - determines instruction throughput and peripheral timing margins |
| On-Chip Memory | 12 KB EPROM + 512 B RAM + 256 B EEPROM - enables standalone operation without external memory |
| A/D Converter | 8-channel, 8-bit successive-approximation ADC with 25 µs max conversion time per channel |
| Serial Interfaces | SCI (asynchronous UART) and SPI (synchronous master/slave) - support sensor interfacing and daisy-chain communication |
| Timer System | 16-bit timer with 4 input capture, 5 output compare channels, pulse accumulator, and RTI - suitable for motor control timing and event counting |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard TTL/CMOS logic levels and industrial power rails |
Pinout & Package
MC68HC11E1CFN3 is housed in a 52-pin Plastic-Leaded Chip Carrier (PLCC) package (Case 778), surface-mount compatible with standard reflow profiles and suitable for high-reliability industrial PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Primary DC power interface; requires local decoupling for noise-sensitive analog/digital operation |
| XTAL / EXTAL | Crystal oscillator input/output | Supports 1–4 MHz crystal or external clock source for system timing reference |
| E | System clock output | Provides synchronized E-clock signal for external logic timing coordination |
| RESET | Active-low reset input | Initiates hardware reset sequence including register initialization and memory mapping setup |
| IRQ, XIRQ | Maskable and non-maskable interrupt inputs | Enable priority-based event handling; XIRQ supports critical fault recovery |
| PORT A–E | Programmable bidirectional I/O ports | Port A and E support analog input multiplexing; Port D provides dedicated SCI/SPI signals |
Key Features
| Feature | Design Value |
|---|---|
| Single-chip mode operation | Eliminates need for external address/data latches or glue logic in compact embedded designs |
| On-chip EPROM programming | Enables field firmware updates via bootstrap mode without external programmers |
| EEPROM security lock | Prevents unauthorized readout of CONFIG register and protected memory regions |
| SCI wakeup from stop mode | Reduces system power consumption by allowing deep sleep until serial activity occurs |
| Hardware COP watchdog | Guarantees fail-safe recovery from software hangs in safety-critical control loops |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Controller |
|---|---|
Use Scenario: Real-time monitoring of throttle position, coolant temperature, and crankshaft timing signals. IC Role / Device Role / Timing Role: Central controller executing closed-loop fuel injection timing using input capture and output compare functions. Use Value: 25 µs ADC conversion enables sub-millisecond sensor sampling; COP watchdog ensures deterministic engine shutdown on fault. | Use Scenario: Closed-loop speed regulation of AC induction motors using encoder feedback and PWM outputs. IC Role / Device Role / Timing Role: Timing-critical pulse accumulator counts encoder edges while output compare generates precise PWM duty cycles. Use Value: 16-bit timer resolution supports 1:65536 speed measurement granularity; SPI interface configures external gate drivers. |
| Smart Meter Data Acquisition | Legacy Industrial PLC I/O Module |
Use Scenario: Isolated voltage/current sensing and tamper detection in utility metering systems. IC Role / Device Role / Timing Role: Analog front-end processor digitizing sensor outputs and managing secure data logging to EEPROM. Use Value: On-chip 8-bit ADC eliminates external converter; EEPROM security prevents firmware tampering during field deployment. | Use Scenario: Retrofitting legacy 24 VDC discrete I/O into modern control cabinets with minimal board redesign. IC Role / Device Role / Timing Role: Protocol translator between RS-232 HMI interfaces and opto-isolated digital input/output banks. Use Value: SCI supports Modbus RTU at 9600 bps; PORT A/E analog inputs monitor supply rail health without added components. |
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, 512 B RAM, but 512 B EPROM and no EEPROM; ceramic DIP package | Lacks EEPROM-based configuration storage and field-programmable EPROM | Select when cost-sensitive, low-complexity boot code only is required and surface-mount is not mandatory |
| MC68HC11F1CFN | Enhanced variant with 20 MHz max bus speed, 2 KB RAM, and additional I/O pins | Requires updated PCB layout and revised timing-critical firmware due to higher clock rate | Select when higher throughput or expanded memory is needed; not drop-in compatible |
Compared with MC68HC11E9CP and MC68HC11F1CFN, the MC68HC11E1CFN3 offers balanced memory resources (12 KB EPROM + 256 B EEPROM) and PLCC packaging ideal for industrial retrofits where field programmability and moderate performance are prioritized over raw speed or lowest cost.
Availability
MC68HC11E1CFN3 is available at Aetrix Electronics and suitable for automotive engine control units, industrial motor drives, smart meter data acquisition, and legacy PLC I/O modules requiring stable component supply across extended product lifecycles.
Supply support for MC68HC11E1CFN3 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 controllers and analog/mixed-signal ICs for automotive, industrial, and communications markets.
The MC68HC11E family was engineered for cost-effective, real-time control in resource-constrained environments - emphasizing on-chip memory integration, low-power operation, and robust peripheral sets for sensor interfacing and actuator control.
FAQ
What is the maximum operating frequency of the MC68HC11E1CFN3?
The MC68HC11E1CFN3 supports a maximum bus frequency of 2 MHz, corresponding to a 4 MHz crystal input with internal divide-by-two clock generation. This frequency defines instruction execution timing, peripheral response latency, and ADC conversion rate limits. The MC68HC11E1CFN3 does not support higher-speed variants like the F-series derivatives.
Does the MC68HC11E1CFN3 include on-chip EEPROM?
Yes, the MC68HC11E1CFN3 integrates 256 bytes of EEPROM used for non-volatile storage of calibration data, device configuration, and security settings. This EEPROM is electrically erasable and programmable in-system, and its contents can be protected using the CONFIG register lock mechanism to prevent unauthorized access.
How is the MC68HC11E1CFN3 programmed after soldering to a PCB?
The MC68HC11E1CFN3 supports in-circuit EPROM programming via bootstrap mode using the SCI interface and compatible host tools such as PCbug11. No external EPROM programmer is required. The process involves entering bootstrap mode through specific RESET and MODA/MODB pin states, then downloading HEX files directly to on-chip EPROM memory.
What package type is used for the MC68HC11E1CFN3?
The MC68HC11E1CFN3 uses a 52-pin Plastic-Leaded Chip Carrier (PLCC) package (Case 778), featuring a square body with J-leads suitable for surface-mount assembly and rework. This package provides mechanical robustness and thermal performance appropriate for industrial temperature range operation.
Can the MC68HC11E1CFN3 operate in low-power stop mode?
Yes, the MC68HC11E1CFN3 supports stop mode with current consumption below 10 µA. In this state, the CPU and most peripherals halt while retaining RAM and register contents. Wakeup is possible via IRQ, XIRQ, or SCI idle-line/address-mark detection - enabling battery-powered applications requiring extended standby duration.
MC68HC11E1CFN3 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:
MC68HC11E1CFN3 FAQ
1.How can I place an order for MC68HC11E1CFN3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC68HC11E1CFN3 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 MC68HC11E1CFN3 reliable?
The price and inventory of MC68HC11E1CFN3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC68HC11E1CFN3 is usually 5 days.
3.What payment methods are accepted for MC68HC11E1CFN3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC68HC11E1CFN3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC68HC11E1CFN3?
MC68HC11E1CFN3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC68HC11E1CFN3 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 MC68HC11E1CFN3?
For technical support, including MC68HC11E1CFN3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC68HC11E1CFN3 requirements.
6.How does Aetrix verify that MC68HC11E1CFN3 is sourced from the original manufacturer or authorized distributors?
All MC68HC11E1CFN3 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 MC68HC11E1CFN3 meets industry standards.
7.What is the process for return or replacement of MC68HC11E1CFN3?
All MC68HC11E1CFN3 units undergo pre-shipment inspection (PSI). If there is an issue with MC68HC11E1CFN3, 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 MC68HC11E1CFN3 part is unused and in its original packaging.
Return procedure for MC68HC11E1CFN3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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