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NXP Semiconductors MC68HC11E9BCFNE2
- Part No.:
- MC68HC11E9BCFNE2
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
MC68HC11E9BCFNE2.pdf
- Description:
- M68HC11E - 8BIT MCU,12K BUFFALO
- Quantity:
- Payment:
- Shipping:
Inventory:3,266
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Product details
Overview
MC68HC11E9BCFNE2 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 internal bus speed and supports single-chip and expanded modes for embedded control in automotive sensors and industrial motor controllers.
For engineers reviewing the MC68HC11E9BCFNE2 datasheet, MC68HC11E9BCFNE2 pinout, MC68HC11E9BCFNE2 application, or MC68HC11E9BCFNE2 equivalent, key selection criteria include EPROM programmability, on-chip EEPROM retention over 10 years, 5 V operation with 3.0–5.5 V supply range, and compatibility with legacy HC11 development tools like EVBU and PCbug11.
Technical Context
The MC68HC11E9BCFNE2 implements a Harvard architecture CPU core with 64 KB address space, supporting indexed, extended, and inherent addressing modes. Its memory subsystem includes mask-programmable EPROM (12 KB), user-programmable EEPROM (512 B), and volatile RAM (512 B), all mapped into a unified address space with configurable bank switching via the System Configuration Register.
Peripheral integration includes a full-duplex asynchronous SCI with idle-line and address-mark wakeup, a synchronous SPI master/slave interface, and a flexible 16-bit timer module with four input capture channels and five output compare channels - enabling precise pulse-width measurement, PWM generation, and real-time interrupt timing at 1 ms resolution.
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 |
| Max Bus Frequency | 2 MHz - determines instruction throughput and peripheral timing margins |
| On-Chip Memory | 12 KB EPROM (non-volatile program storage), 512 B EEPROM (data retention ≥10 years), 512 B RAM |
| ADC | 8-channel 8-bit successive-approximation ADC with 25 µs conversion time per channel |
| Timer System | 16-bit free-running counter with 4 input capture and 5 output compare channels for event timing and waveform generation |
| Serial Interfaces | SCI (asynchronous UART) and SPI (synchronous master/slave) both fully register-mapped and interrupt-capable |
| Supply Voltage | 3.0 V to 5.5 V - enables direct interfacing with 5 V logic and tolerance to brown-out conditions |
Pinout & Package
MC68HC11E9BCFNE2 is housed in a 52-pin QFP (Quad Flat Package) with 0.65 mm pitch, compliant with JEDEC MS-026. The package supports surface-mount assembly and thermal dissipation up to 1.2 W at 70°C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual power pins for noise isolation between analog and digital sections |
| XTAL / EXTAL | Crystal oscillator input/output | Supports external 32.768 kHz crystal for RTI or higher-frequency crystals up to 8 MHz |
| E | System clock output | Provides buffered E-clock (½ CPU frequency) for synchronizing external logic or peripherals |
| RESET | Active-low reset input | Asynchronous reset that initializes CPU registers, memory map, and peripheral control registers |
| IRQ / XIRQ | Maskable and non-maskable interrupt inputs | XIRQ supports high-priority wake-up from Stop mode; IRQ is software-configurable priority |
| PORT A–E | Programmable bidirectional I/O ports | Port A (8-bit) multiplexed with ADC inputs; Port E (8-bit) includes dedicated SCI/SPI signals |
Key Features
| Feature | Design Value |
|---|---|
| On-chip EPROM programming | Field-programmable via bootstrap mode using standard 5 V VPP; no external programmer required |
| EEPROM data retention | Guaranteed ≥10 years at 85°C - suitable for calibration storage in automotive ECUs |
| Low-power Stop/Wait modes | Stop mode draws <10 µA; Wake-up via XIRQ, RTI, or SCI activity enables battery-powered operation |
| Hardware security lock | CONFIG register bit disables readout of EPROM/EEPROM contents after programming - prevents firmware reverse engineering |
| Integrated ADC reference | Internal 5 V VREF option eliminates need for external precision reference in cost-sensitive sensor nodes |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Controller |
|---|---|
Use Scenario: Real-time monitoring of throttle position, coolant temperature, and crankshaft timing in 16-valve gasoline engines. IC Role / Device Role / Timing Role: Primary controller executing fuel injection timing, spark advance calculation, and closed-loop feedback using ADC inputs and PWM outputs. Use Value: On-chip EPROM stores calibrated lookup tables; EEPROM retains adaptive learning parameters across ignition cycles. | Use Scenario: Closed-loop speed and current regulation for 3-phase AC induction motors in HVAC blowers and conveyor systems. IC Role / Device Role / Timing Role: Generates synchronized PWM waveforms via output compare channels while sampling current feedback through ADC Channel 0. Use Value: 2 MHz bus speed ensures sub-100 µs loop execution; integrated SCI enables Modbus RTU communication with HMI panels. |
| Medical Infusion Pump | Legacy Industrial PLC I/O Module |
Use Scenario: Precise volumetric dosing control requiring fault-tolerant timing, pressure sensing, and alarm signaling. IC Role / Device Role / Timing Role: Manages stepper motor sequencing, reads pressure transducer via ADC, and triggers audible/visual alerts on PORT B bits. Use Value: Hardware RTI provides deterministic 1 ms interrupt intervals for safety-critical dose verification routines. | Use Scenario: Retrofitting analog/digital I/O expansion for aging Allen-Bradley SLC-500 systems using discrete 24 V DC inputs and relay outputs. IC Role / Device Role / Timing Role: Translates Modbus ASCII commands over RS-232 (SCI) into parallel port toggling for DIN-rail mounted I/O cards. Use Value: Single-chip mode eliminates external memory bus components, reducing BOM count and PCB area by 35% vs. MPU-based solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC68HC11E20CFNE2 | Same pinout and architecture but with 20 KB EPROM and no on-chip EEPROM; requires external serial EEPROM for data logging | Better suited for larger firmware images where data persistence is handled externally | Select when code size exceeds 12 KB and EEPROM usage is minimal or offloaded |
| MC9S12XDP512 | 16-bit HCS12X core, 512 KB Flash, CAN 2.0B interface, and enhanced debug support - not pin-compatible | Targets next-generation automotive modules requiring CAN networking and higher compute throughput | Choose for new designs needing CAN, larger memory, and modern toolchain support; not a drop-in replacement |
Compared with MC68HC11E20CFNE2 and MC9S12XDP512, the MC68HC11E9BCFNE2 uniquely balances legacy system compatibility, on-chip non-volatile data storage, and minimal external component count - making it optimal for cost-sensitive, long-lifecycle industrial retrofits where firmware size stays under 12 KB.
Availability
MC68HC11E9BCFNE2 is available at Aetrix Electronics and suitable for automotive engine management, industrial motor drives, medical infusion pumps, and legacy PLC I/O modules requiring stable component supply across extended product lifecycles.
Supply support for MC68HC11E9BCFNE2 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.
The M68HC11E family was designed for cost-effective, low-power embedded control in automotive subsystems and industrial equipment where deterministic real-time response and long-term reliability are critical.
FAQ
What is the maximum operating frequency of the MC68HC11E9BCFNE2?
The MC68HC11E9BCFNE2 has a maximum internal bus frequency of 2 MHz, derived from an external crystal or oscillator input. This frequency governs instruction execution timing, peripheral clocking, and ADC conversion rates. While external crystals up to 8 MHz may be used, the internal divider ensures the E-clock remains at half the CPU frequency, maintaining timing compliance across all on-chip modules.
Does the MC68HC11E9BCFNE2 support in-system programming of its EPROM?
Yes, the MC68HC11E9BCFNE2 supports in-system EPROM programming via bootstrap mode using only standard 5 V VPP applied to the MODB pin. No external high-voltage programmer is needed - firmware updates can be performed directly on the target board using compatible utilities like PCbug11 and the M68HC11EVBU, provided the security bit has not been set.
How much EEPROM does the MC68HC11E9BCFNE2 include, and what is its endurance rating?
The MC68HC11E9BCFNE2 integrates 512 bytes of EEPROM with guaranteed data retention of ≥10 years at 85°C and endurance of 10,000 write/erase cycles. This makes it suitable for storing calibration coefficients, device configuration, or runtime counters in automotive and industrial environments where infrequent but persistent data updates are required.
Can the MC68HC11E9BCFNE2 operate from a 3.3 V supply?
No, the MC68HC11E9BCFNE2 is specified for 3.0 V to 5.5 V operation but is not 3.3 V–optimized. Its I/O structure, internal voltage references, and EPROM programming requirements are designed for 5 V logic families. Using 3.3 V may result in marginal timing, unreliable ADC performance, or failure to enter bootstrap mode - 5 V operation is strongly recommended.
What development tools are officially supported for the MC68HC11E9BCFNE2?
Officially supported tools for the MC68HC11E9BCFNE2 include the M68HC11EVBU evaluation board, PCbug11 debugger software, and AN1060 Bootstrap Mode application note. These enable hardware debugging, EPROM programming, and real-time register inspection. Third-party tools like HI-TECH C compiler and ImageCraft ICC11 are also widely used, though NXP's legacy CodeWarrior HC11 suite remains the reference IDE.
MC68HC11E9BCFNE2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 52-LCC (J-Lead)
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- -
- Core Processor:
- M68HC11
- Core Size:
- 8-Bit
- Speed:
- 2MHz
- Connectivity:
- SCI, SPI
- Peripherals:
- POR, WDT
- Number of I/O:
- 16
- Program Memory Size:
- 12KB (12K x 8)
- Program Memory Type:
- ROM
- 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC68HC11E9BCFNE2 FAQ
1.How can I place an order for MC68HC11E9BCFNE2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC68HC11E9BCFNE2 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 MC68HC11E9BCFNE2 reliable?
The price and inventory of MC68HC11E9BCFNE2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC68HC11E9BCFNE2 is usually 5 days.
3.What payment methods are accepted for MC68HC11E9BCFNE2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC68HC11E9BCFNE2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC68HC11E9BCFNE2?
MC68HC11E9BCFNE2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC68HC11E9BCFNE2 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 MC68HC11E9BCFNE2?
For technical support, including MC68HC11E9BCFNE2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC68HC11E9BCFNE2 requirements.
6.How does Aetrix verify that MC68HC11E9BCFNE2 is sourced from the original manufacturer or authorized distributors?
All MC68HC11E9BCFNE2 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 MC68HC11E9BCFNE2 meets industry standards.
7.What is the process for return or replacement of MC68HC11E9BCFNE2?
All MC68HC11E9BCFNE2 units undergo pre-shipment inspection (PSI). If there is an issue with MC68HC11E9BCFNE2, 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 MC68HC11E9BCFNE2 part is unused and in its original packaging.
Return procedure for MC68HC11E9BCFNE2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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