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NXP Semiconductors MC68L11E1FNE2
- Part No.:
- MC68L11E1FNE2
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
MC68L11E1FNE2.pdf
- Description:
- IC MCU 8BIT ROMLESS 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,830
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Product details
Overview
MC68L11E1FNE2 from Freescale Semiconductor is an 8-bit CMOS microcontroller in the M68HC11E family, featuring 512 bytes of on-chip RAM, 2048 bytes of EPROM, and integrated A/D converter, SCI, SPI, and timer subsystems. It operates at up to 2 MHz with 3.0–5.5 V supply, supports single-chip mode, and targets embedded control in industrial sensors and automotive body electronics.
For engineers reviewing the MC68L11E1FNE2 datasheet, MC68L11E1FNE2 pinout, MC68L11E1FNE2 application, or MC68L11E1FNE2 equivalent, key selection criteria include EPROM-based firmware retention, 8-channel 8-bit ADC resolution, single-chip operation without external bus logic, and compatibility with legacy HC11 development tools including EVBU and PCbug11.
Technical Context
The MC68L11E1FNE2 implements the M68HC11 CPU core with 65,536-byte address space, indexed/direct/extended addressing modes, and full instruction set backward compatibility with MC6800. Its memory map includes fixed ROM/EPROM at $E000–$E7FF, RAM at $0000–$01FF, and I/O registers mapped in the $1000–$103F range.
It integrates a 16-bit timer system with four input capture channels, three output compare channels, real-time interrupt (RTI), and pulse accumulator; the 8-channel analog-to-digital converter supports single- and multiple-channel conversions with programmable sample time and conversion trigger sources.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M68HC11 8-bit CISC architecture with 65,536-byte linear address space |
| On-Chip Memory | 2 KB EPROM (programmable via on-chip programming circuitry) + 512 B RAM |
| ADC | 8-channel, 8-bit successive-approximation A/D converter with internal reference |
| Serial Interfaces | SCI (asynchronous UART) and SPI (synchronous master/slave) both fully register-mapped |
| Supply Voltage | 3.0 Vdc to 5.5 Vdc - enables direct interface with 3.3 V and 5 V logic systems |
| Operating Frequency | DC to 2 MHz E-clock - supports low-power operation with configurable wait/stop modes |
| Package | 52-pin PLCC (plastic leaded chip carrier) - surface-mount compatible with standard reflow profiles |
Pinout & Package
MC68L11E1FNE2 is housed in a 52-pin Plastic Leaded Chip Carrier (PLCC) package with J-lead configuration, designed for socketed or surface-mount assembly in space-constrained industrial control modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual power pins support noise isolation between analog and digital sections |
| XTAL / EXTAL | Crystal oscillator input/output | Supports external crystal (1–4 MHz) or TTL clock source for precise timing control |
| E | System clock output | Provides buffered E-clock signal for synchronization of external peripherals |
| RESET | Active-low reset input | Asynchronous hardware reset that initializes CPU, registers, and peripheral control logic |
| XIRQ | Non-maskable interrupt input | High-priority interrupt used for critical fault handling or EPROM programming entry |
| PORT A (PA0–PA7) | 8-bit bidirectional I/O port | Configurable as general-purpose I/O or dedicated signals (e.g., AD0–AD7 for multiplexed bus) |
| PORT E (PE0–PE7) | 8-bit bidirectional I/O port | Includes IRQ, XIRQ, MODA/MODB, and handshake lines for parallel peripheral interfacing |
Key Features
| Feature | Design Value |
|---|---|
| On-chip EPROM programming | Enables field firmware updates without external programmer; uses internal high-voltage charge pump |
| Single-chip mode operation | Eliminates need for external address/data bus logic - reduces BOM and PCB area |
| Integrated A/D converter | 8-channel 8-bit ADC with software-selectable input sources and conversion triggers |
| Low-power stop/wait modes | Reduces current draw to <10 µA (stop) and ~100 µA (wait), extending battery life in portable devices |
| Security lock feature | Prevents unauthorized readout of EPROM contents after programming - protects IP in production units |
Applications
| Industrial Sensor Node | Automotive Body Control |
|---|---|
Use Scenario: Standalone temperature/humidity sensor node with local data logging and RS-232 telemetry. IC Role / Device Role / Timing Role: Primary controller executing sensor polling, ADC sampling, serial protocol framing, and EEPROM-backed event storage. Use Value: Integrated EPROM retains calibration data and firmware across power cycles; 8-bit ADC provides sufficient resolution for environmental sensing. | Use Scenario: Door module managing window lift, mirror adjustment, and interior lighting via LIN or discrete switches. IC Role / Device Role / Timing Role: Real-time I/O coordinator with pulse accumulation for motor position feedback and SCI for diagnostic communication. Use Value: Single-chip architecture eliminates external glue logic; robust reset/interrupt handling ensures fail-safe behavior during vehicle power transients. |
| Legacy Equipment Retrofit | Education & Lab Trainer |
Use Scenario: Replacement controller for aging PLC I/O modules requiring drop-in HC11 compatibility. IC Role / Device Role / Timing Role: Pin- and code-compatible upgrade path for MC68HC11E9/E20 designs with extended voltage tolerance. Use Value: 3.0–5.5 V operation accommodates legacy 5 V supply rails while enabling gradual migration to 3.3 V systems. | Use Scenario: Microcontroller lab platform for teaching assembly language, interrupt handling, and peripheral interfacing. IC Role / Device Role / Timing Role: Pedagogical MCU with visible register mapping, debuggable bootstrap mode, and accessible I/O pins. Use Value: On-board EPROM and SCI allow self-contained program loading and terminal interaction without external programmers. |
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 peripheral set but rated for 5 V only (4.5–5.5 V); lacks extended voltage range | Not suitable for mixed-voltage or battery-powered systems requiring 3.0 V operation | Select MC68L11E1FNE2 when 3.0 V minimum supply or wider voltage margin is required |
| MC68HC11E20CP | Features 20 KB EPROM instead of 2 KB; identical pinout and instruction set | Used where larger firmware footprint or future expansion headroom is needed | Choose MC68L11E1FNE2 for cost-sensitive, fixed-function implementations with modest code size |
Compared with MC68HC11E9CP and MC68HC11E20CP, the MC68L11E1FNE2 offers optimal balance of voltage flexibility, code density, and legacy toolchain support - making it ideal for maintenance of existing HC11-based designs where power efficiency and supply tolerance are critical.
Availability
MC68L11E1FNE2 is available at Aetrix Electronics and suitable for industrial sensor nodes, automotive body control modules, and legacy equipment retrofit projects requiring stable component supply and long-term obsolescence management.
Supply support for MC68L11E1FNE2 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 industrial and automotive applications, emphasizing reliability, longevity, and toolchain maturity.
The M68HC11E family - including MC68L11E1FNE2 - was designed for cost-effective, low-power embedded control in environments demanding firmware persistence, deterministic real-time response, and minimal external components.
FAQ
What is the maximum operating frequency of the MC68L11E1FNE2?
The MC68L11E1FNE2 supports a maximum E-clock frequency of 2 MHz. This corresponds to a 4 MHz crystal (or external clock) input when using the internal divide-by-two oscillator circuit. The device maintains full functionality and timing specification compliance across its entire 3.0–5.5 V supply range at this speed.
Does the MC68L11E1FNE2 support in-circuit programming?
Yes, the MC68L11E1FNE2 supports on-chip EPROM programming via its built-in programming circuitry. Programming requires applying VPP (~12 V) to the XIRQ pin and using bootstrap mode with a compatible host (e.g., PCbug11 or M68HC11EVBU). No external EPROM programmer is needed for field updates.
What development tools are compatible with the MC68L11E1FNE2?
The MC68L11E1FNE2 is fully supported by legacy Freescale development tools including the M68HC11EVBU evaluation board, PCbug11 debugger, and AS11 assembler. Its instruction set and memory map ensure binary compatibility with all M68HC11E-series software and bootloaders.
How does the security feature work on the MC68L11E1FNE2?
The MC68L11E1FNE2 implements a one-time programmable security byte in its CONFIG register. Once set, it prevents external readout of EPROM contents and disables certain debug features. Security activation is irreversible and occurs during final programming - protecting firmware intellectual property in deployed units.
Is the MC68L11E1FNE2 pin-compatible with other M68HC11E variants?
Yes, the MC68L11E1FNE2 shares identical 52-pin PLCC pinout and signal assignments with MC68HC11E9, MC68HC11E20, and MC68HC11E1 devices. This enables direct substitution in existing PCB layouts, provided voltage and memory requirements align with the target application.
MC68L11E1FNE2 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:
- 2MHz
- 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):
- 3V ~ 5.5V
- Data Converters:
- A/D 8x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC68L11E1FNE2 FAQ
1.How can I place an order for MC68L11E1FNE2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC68L11E1FNE2 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 MC68L11E1FNE2 reliable?
The price and inventory of MC68L11E1FNE2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC68L11E1FNE2 is usually 5 days.
3.What payment methods are accepted for MC68L11E1FNE2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC68L11E1FNE2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC68L11E1FNE2?
MC68L11E1FNE2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC68L11E1FNE2 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 MC68L11E1FNE2?
For technical support, including MC68L11E1FNE2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC68L11E1FNE2 requirements.
6.How does Aetrix verify that MC68L11E1FNE2 is sourced from the original manufacturer or authorized distributors?
All MC68L11E1FNE2 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 MC68L11E1FNE2 meets industry standards.
7.What is the process for return or replacement of MC68L11E1FNE2?
All MC68L11E1FNE2 units undergo pre-shipment inspection (PSI). If there is an issue with MC68L11E1FNE2, 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 MC68L11E1FNE2 part is unused and in its original packaging.
Return procedure for MC68L11E1FNE2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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