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NXP Semiconductors MC68HC11E1CFNE2
- Part No.:
- MC68HC11E1CFNE2
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
MC68HC11E1CFNE2.pdf
- Description:
- IC MCU 8BIT ROMLESS 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,492
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Product details
Overview
MC68HC11E1CFNE2 from NXP Semiconductors (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 frequency and supports single-chip and expanded modes for embedded control in automotive sensors and industrial instrumentation.
For engineers reviewing the MC68HC11E1CFNE2 datasheet, MC68HC11E1CFNE2 pinout, MC68HC11E1CFNE2 application, or MC68HC11E1CFNE2 equivalent, key selection criteria include EPROM programmability, on-chip EEPROM retention (≥10 years), 8-bit ADC resolution with software-selectable conversion time (4–27 µs), and compatibility with legacy HC11 development tools such as EVBU and PCbug11.
Technical Context
The MC68HC11E1CFNE2 implements a Harvard-derived memory architecture with separate instruction and data buses, enabling efficient execution of the M6800-compatible instruction set. Its CPU includes two 8-bit accumulators (A/B), 16-bit index registers (X/Y), stack pointer, and condition code register supporting 16 addressing modes.
Peripherals are memory-mapped and controlled via dedicated registers: the ADC uses a successive-approximation core with internal voltage reference; SCI supports full-duplex asynchronous communication with idle-line and address-mark wakeup; SPI operates in master/slave mode with programmable clock polarity and phase; and the timer subsystem provides four input capture, five output compare channels, and real-time interrupt capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | 8-bit M68HC11 CISC, 2 MHz max E-clock, backward-compatible with M6800 |
| Memory | 12 KB on-chip EPROM (user-programmable), 512 B EEPROM (100k write/erase cycles), 512 B RAM |
| ADC | 8-channel, 8-bit successive-approximation ADC; conversion time 4–27 µs; internal 5 V reference |
| Timers | 16-bit timer with 4 input capture, 5 output compare, RTI, and pulse accumulator functions |
| Serial Interfaces | SCI (asynchronous UART) + SPI (synchronous master/slave); both fully memory-mapped and interrupt-capable |
| Supply Voltage | 5.0 V ±10% (4.5–5.5 V); specified DC electrical characteristics over –40°C to +85°C |
| Package | 52-pin PLCC (Plastic Leaded Chip Carrier), JEDEC MS-026AC, body size 19.05 × 19.05 mm |
Pinout & Package
MC68HC11E1CFNE2 is housed in a 52-pin Plastic Leaded Chip Carrier (PLCC) package compliant with JEDEC standard MS-026AC. The package supports surface-mount assembly and provides thermal and mechanical reliability for industrial temperature operation (–40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual power pins for noise isolation; VDD must be decoupled locally per datasheet layout guidelines |
| XTAL / EXTAL | Crystal oscillator input/output | Supports external crystal (1–4 MHz) or TTL-level clock source; internal oscillator circuitry enabled by default |
| E | System clock output | Provides buffered E-clock (½ oscillator frequency) for synchronous peripheral timing and external logic coordination |
| RESET | Active-low reset input | Asynchronous reset assertion clears CPU registers, disables peripherals, and forces boot sequence from vector table at $FFFE |
| IRQ / XIRQ | Maskable and non-maskable interrupt inputs | IRQ supports priority-based vectored interrupts; XIRQ enables high-priority service without I-bit masking |
| PORT A–E | Programmable bidirectional I/O ports | Port A: 8-bit analog/digital multiplexed (ADC inputs); Ports B–E: digital I/O with direction control via DDR registers |
Key Features
| Feature | Design Value |
|---|---|
| On-chip EPROM programming | Field-programmable 12 KB EPROM via bootstrap mode using standard 5 V VPP; no external programmer required |
| EEPROM security | Configurable block protection and security byte lock to prevent unauthorized readout or reprogramming |
| Low-power modes | Wait mode (CPU halted, peripherals active) and Stop mode (all clocks halted, wake-up via IRQ/XIRQ/RTI) |
| ADC auto-calibration | Internal offset calibration routine accessible via COP register; eliminates need for external trimming components |
| SCI wakeup capability | Idle-line and address-mark detection enable low-power remote wake-up over serial bus without host polling |
Applications
| Automotive Engine Sensor Interface | Industrial Temperature Controller |
|---|---|
Use Scenario: Reading throttle position, coolant temperature, and oxygen sensor signals in engine control units under harsh EMI and thermal conditions. IC Role / Device Role / Timing Role: Central signal acquisition and preprocessing unit; ADC samples analog sensors synchronously with E-clock; timer captures ignition timing edges. Use Value: Integrated 8-bit ADC with internal reference and EEPROM-based calibration storage eliminate external precision references and trim components, reducing BOM count and board area. | Use Scenario: Closed-loop PID regulation of heating elements in programmable logic controller (PLC) I/O modules operating at 50/60 Hz line frequency. IC Role / Device Role / Timing Role: Real-time data concentrator; SCI communicates setpoint updates from HMI; SPI interfaces with isolated DACs and relay drivers. Use Value: On-chip 512-byte EEPROM retains calibration coefficients and user configuration across power cycles without backup battery. |
| Legacy Industrial Equipment Retrofit | Academic Embedded Systems Lab |
Use Scenario: Replacing obsolete 8051 or Z80-based controllers in factory floor machinery where PCB footprint and toolchain continuity are critical constraints. IC Role / Device Role / Timing Role: Drop-in firmware-compatible replacement; uses same memory map and interrupt vectors as original HC11 designs. Use Value: Pin-compatible with MC68HC11E9/E20 in 52-pin PLCC package; supports identical EVBU debugging interface and PCbug11 host software. | Use Scenario: Teaching assembly-language programming, interrupt handling, and peripheral interfacing in undergraduate microcontroller labs with limited lab equipment budgets. IC Role / Device Role / Timing Role: Pedagogical platform demonstrating Harvard-style memory mapping, memory-mapped I/O, and hardware-assisted timing operations. Use Value: Comprehensive documentation (Rev. 5.1 datasheet), free development tools (GNU GCC HC11 port, open-source simulators), and widely available evaluation boards (EVBU) lower entry barrier for student projects. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC68HC11E9CP | Same 52-pin PLCC package; 12 KB EPROM, but only 256 B EEPROM (vs. 512 B); no internal voltage reference for ADC | Requires external VREF for ADC; less nonvolatile storage for calibration data | Select when EEPROM capacity and internal ADC reference are not required; lower cost alternative |
| MC68HC11F1CFNE2 | Enhanced variant with 20 KB EPROM, 1 KB EEPROM, and added CAN 2.0B controller; same 52-pin PLCC footprint | Enables CAN bus integration in automotive networks; higher memory supports larger firmware | Choose for new designs requiring fieldbus connectivity; not drop-in compatible due to CAN register additions |
Compared with MC68HC11E9CP, the MC68HC11E1CFNE2 offers double EEPROM capacity and integrated ADC reference-critical for sensor calibration retention. Against MC68HC11F1CFNE2, it trades CAN capability for proven stability and lower power in legacy control roles where bus expansion is unnecessary.
Availability
MC68HC11E1CFNE2 is available at Aetrix Electronics and suitable for automotive engine management systems, industrial PLC I/O modules, legacy equipment retrofits, and academic embedded systems labs requiring stable component supply and long-term obsolescence support.
Supply support for MC68HC11E1CFNE2 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 M68HC11E family was designed for cost-sensitive, high-reliability embedded control in automotive and industrial environments where deterministic real-time response, on-chip nonvolatile memory, and toolchain longevity are essential.
FAQ
What is the maximum operating frequency of the MC68HC11E1CFNE2?
The MC68HC11E1CFNE2 supports a maximum E-clock frequency of 2 MHz, derived from an external crystal or oscillator connected to XTAL/EXTAL pins. Its internal bus operates at this E-clock rate, and all timing specifications-including ADC conversion, timer resolution, and SCI baud generation-are defined relative to this clock. The device is characterized for reliable operation across the full industrial temperature range (–40°C to +85°C) at this speed.
Does the MC68HC11E1CFNE2 support in-system programming of its EPROM?
Yes, the MC68HC11E1CFNE2 supports in-system EPROM programming via its bootstrap mode using only standard 5 V VPP applied to the MODA pin. No external high-voltage programmer is required. Programming is initiated through a specific reset sequence and executed using on-chip firmware routines documented in AN1060 and the M68HC11E Family Data Sheet Rev. 5.1. The MC68HC11E1CFNE2 EPROM endurance is rated for ≥100 program/erase cycles.
How does the ADC on the MC68HC11E1CFNE2 achieve accuracy without external components?
The MC68HC11E1CFNE2 integrates an internal 5 V voltage reference and performs automatic offset calibration during power-up or via software command. This eliminates the need for external precision references or trimming resistors. The ADC's 8-bit resolution and 4–27 µs conversion time are guaranteed across the full operating voltage and temperature range, with linearity error specified at ±1 LSB typical. Calibration data is stored in on-chip EEPROM to maintain accuracy after power cycles.
Can the MC68HC11E1CFNE2 operate in low-power modes for battery-powered applications?
Yes, the MC68HC11E1CFNE2 supports Wait and Stop low-power modes. In Wait mode, the CPU halts while peripherals remain active-ideal for event-driven polling. In Stop mode, all clocks are disabled except for RTI and external interrupt sources, reducing current draw to <10 µA. Wake-up occurs on IRQ, XIRQ, RTI, or SCI activity. These modes make the MC68HC11E1CFNE2 suitable for intermittent-sensing applications like remote sensor nodes with extended battery life requirements.
Is the MC68HC11E1CFNE2 pin-compatible with other members of the M68HC11E family?
Yes, the MC68HC11E1CFNE2 is pin-compatible with the MC68HC11E9CP and MC68HC11E20CP in the 52-pin PLCC package. All share identical pin assignments for power, clock, reset, interrupts, and I/O ports. However, differences in on-chip memory size (EPROM/EEPROM), ADC reference, and peripheral enable bits require firmware validation-even though PCB layout and socketing can be reused across these variants.
MC68HC11E1CFNE2 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:
MC68HC11E1CFNE2 FAQ
1.How can I place an order for MC68HC11E1CFNE2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC68HC11E1CFNE2 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 MC68HC11E1CFNE2 reliable?
The price and inventory of MC68HC11E1CFNE2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC68HC11E1CFNE2 is usually 5 days.
3.What payment methods are accepted for MC68HC11E1CFNE2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC68HC11E1CFNE2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC68HC11E1CFNE2?
MC68HC11E1CFNE2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC68HC11E1CFNE2 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 MC68HC11E1CFNE2?
For technical support, including MC68HC11E1CFNE2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC68HC11E1CFNE2 requirements.
6.How does Aetrix verify that MC68HC11E1CFNE2 is sourced from the original manufacturer or authorized distributors?
All MC68HC11E1CFNE2 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 MC68HC11E1CFNE2 meets industry standards.
7.What is the process for return or replacement of MC68HC11E1CFNE2?
All MC68HC11E1CFNE2 units undergo pre-shipment inspection (PSI). If there is an issue with MC68HC11E1CFNE2, 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 MC68HC11E1CFNE2 part is unused and in its original packaging.
Return procedure for MC68HC11E1CFNE2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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