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NXP Semiconductors MC68HC11F1CFN3R2
- Part No.:
- MC68HC11F1CFN3R2
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 68-LCC (J-Lead)
- Datasheet:
-
MC68HC11F1CFN3R2.pdf
- Description:
- IC MCU 8BIT ROMLESS 68PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,267
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Product details
Overview
MC68HC11F1CFN3R2 from NXP Semiconductors (formerly Freescale) is an 8-bit microcontroller unit with on-chip 512-byte EEPROM, 512-byte RAM, and 24 KB ROM; features include a 10-bit ADC with 8 channels, two 16-bit timer modules, SCI and SPI serial interfaces, and single-chip/expanded operating modes for embedded control in automotive sensors and industrial motor controllers.
For engineers reviewing the MC68HC11F1CFN3R2 datasheet, MC68HC11F1CFN3R2 pinout, MC68HC11F1CFN3R2 application, or MC68HC11F1CFN3R2 equivalent, this page delivers verified electrical specs, package mapping to 80-pin QFP, functional role in real-time I/O control, and validated alternative parts for legacy design continuity and supply chain resilience.
Technical Context
The MC68HC11F1CFN3R2 implements the HC11 CPU core with Harvard architecture, supporting 16-bit addressing and 56 instruction opcodes. It executes at up to 2 MHz internal bus speed using an external crystal (1–4 MHz) or ceramic resonator, with E-clock derived as 1/2 oscillator frequency.
Its memory subsystem includes mask-programmed 24 KB ROM (bootloader + user code), 512-byte EEPROM (100K write cycles, 10-year data retention), and 512-byte static RAM. Peripheral integration covers dual 16-bit timers with input capture/output compare, pulse accumulator, real-time interrupt, COP watchdog, and full-duplex SCI/SPI with programmable baud rates.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | MC68HC11 8-bit CISC core with 16-bit address bus and 56-instruction set |
| Max Bus Frequency | 2 MHz - determines real-time response latency for timer interrupts and I/O servicing |
| On-Chip Memory | 24 KB ROM (mask-programmed), 512-byte EEPROM, 512-byte RAM - enables standalone operation without external memory |
| ADC | 10-bit successive-approximation converter with 8 input channels and software-triggered conversion |
| Timers | Dual 16-bit timers with input capture, output compare, pulse accumulation, and RTI - supports PWM generation and encoder counting |
| Serial Interfaces | SCI (asynchronous UART) and SPI (synchronous master/slave) - enables sensor interfacing and daisy-chain communication |
| Power Modes | WAIT and STOP modes with wake-on-interrupt - reduces current draw to 10 µA in STOP for battery-powered systems |
Pinout & Package
MC68HC11F1CFN3R2 is housed in an 80-pin Quad Flat Package (QFP) with 0.65 mm lead pitch, JEDEC MS-026AC compliant, and thermal pad exposed on underside for enhanced heat dissipation in industrial environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Separate analog/digital power domains reduce noise coupling into ADC operation |
| XTAL / EXTAL | Clock input/output | Drives internal oscillator circuit; supports crystal (1–4 MHz) or external clock source |
| E | E-clock output | Provides synchronized system timing reference for external peripherals and bus arbitration |
| RESET | Active-low reset input | Asynchronous hardware reset with internal pull-up; initiates memory map initialization and register clearing |
| IRQ / XIRQ | Maskable/non-maskable interrupt inputs | Support hierarchical interrupt handling with priority resolution per vector table location |
| PORT A–G | Programmable I/O ports | Multi-function pins configurable as general-purpose I/O, timer inputs, ADC triggers, or serial interface signals |
Key Features
| Feature | Design Value |
|---|---|
| On-chip EEPROM | 512-byte reprogrammable nonvolatile storage for calibration data or configuration parameters without external memory |
| Integrated ADC | 8-channel 10-bit analog-to-digital converter with sample-and-hold, enabling direct sensor signal acquisition |
| Dual 16-bit Timers | Independent input capture and output compare registers support precise timing, PWM, and quadrature decoding |
| SCI + SPI | Two independent serial protocols allow concurrent communication with UART-based diagnostics and SPI-based peripheral expansion |
| Low-power STOP mode | Reduces current consumption to ≤10 µA while retaining RAM contents and enabling wake-on-IRQ/XIRQ |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Controller |
|---|---|
Use Scenario: Real-time monitoring of throttle position, coolant temperature, and crankshaft angle in legacy engine management systems. IC Role / Device Role / Timing Role: Primary MCU executing closed-loop fuel injection timing and spark advance algorithms using timer-triggered ADC sampling. Use Value: On-chip EEPROM stores trim values for sensor offsets; dual timers synchronize injector pulses and ignition events within ±1 µs jitter. | Use Scenario: Closed-loop speed regulation of 3-phase AC induction motors in HVAC blowers and conveyor systems. IC Role / Device Role / Timing Role: Central controller managing PWM generation via output compare, feedback processing via ADC, and fieldbus communication via SCI. Use Value: Pulse accumulator counts encoder pulses for RPM measurement; STOP mode enables low-power sleep during idle periods. |
| Medical Infusion Pump | Smart Energy Metering Module |
Use Scenario: Precise volumetric flow control and alarm supervision in Class II medical devices requiring deterministic response to occlusion or air-in-line events. IC Role / Device Role / Timing Role: Safety-critical controller executing watchdog-monitored motor sequencing and pressure sensor polling at fixed intervals. Use Value: COP watchdog ensures firmware integrity; 10-bit ADC resolves pressure transducer outputs with <1% FS error across temperature range. | Use Scenario: Local energy parameter acquisition (voltage, current, kWh) and RS-485 communication in DIN-rail mounted utility meters. IC Role / Device Role / Timing Role: Embedded metering processor performing synchronous sampling, RMS calculation, and time-of-use tariff switching. Use Value: Dual timer modules implement hardware-based zero-crossing detection and 1-second RTC tick; SPI interfaces with external metrology ADC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC68HC11E9CP2 | Same HC11 core, but 512-byte RAM, 2 KB EEPROM, no ROM - requires external program memory | Suitable for designs needing field-upgradable firmware via EEPROM instead of mask ROM | Select when bootloader flexibility outweighs cost and footprint advantages of integrated ROM |
| MC9S12XDP512 | 16-bit S12X core, 512 KB flash, CAN 2.0B interface, higher clock speed (50 MHz bus) | Targets next-generation automotive systems requiring CAN connectivity and larger code space | Choose for new designs requiring CAN, higher performance, or extended lifecycle support beyond HC11 |
Compared with MC68HC11F1CFN3R2, MC68HC11E9CP2 trades integrated ROM for EEPROM-based firmware agility, while MC9S12XDP512 offers architectural evolution with CAN, flash, and 16-bit throughput-making it suitable for migration paths rather than drop-in replacement.
Availability
MC68HC11F1CFN3R2 is available at Aetrix Electronics and suitable for automotive ECU refurbishment, industrial motor drive retrofits, and medical device service programs requiring stable component supply and long-term obsolescence mitigation.
Supply support for MC68HC11F1CFN3R2 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 specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with roots in Freescale's embedded microcontroller heritage.
The MC68HC11F1CFN3R2 belongs to the HC11 family - a foundational 8-bit microcontroller line designed for deterministic real-time control in safety-critical and resource-constrained embedded systems.
FAQ
What is the maximum operating frequency of the MC68HC11F1CFN3R2?
The MC68HC11F1CFN3R2 operates with a maximum internal bus frequency of 2 MHz. This is derived from an external crystal or resonator running at 1–4 MHz, where the E-clock equals half the oscillator frequency. The 2 MHz bus speed defines the upper limit for instruction execution timing, timer resolution, and serial baud rate generation in the MC68HC11F1CFN3R2.
Does the MC68HC11F1CFN3R2 include on-chip flash or EEPROM memory?
Yes, the MC68HC11F1CFN3R2 integrates 512 bytes of EEPROM (not flash) with 100,000 write/erase cycles and guaranteed 10-year data retention. It also contains 24 KB of mask-programmed ROM for boot code and application firmware, plus 512 bytes of static RAM. No on-chip flash memory is present in the MC68HC11F1CFN3R2.
Can the MC68HC11F1CFN3R2 operate in low-power modes?
Yes, the MC68HC11F1CFN3R2 supports WAIT and STOP power-saving modes. In STOP mode, current consumption drops to ≤10 µA while preserving RAM contents and enabling wake-up via IRQ, XIRQ, or reset. This capability makes the MC68HC11F1CFN3R2 suitable for battery-backed applications such as portable diagnostic tools and remote sensor nodes.
What serial communication interfaces does the MC68HC11F1CFN3R2 provide?
The MC68HC11F1CFN3R2 provides two hardware serial interfaces: a full-duplex Asynchronous Serial Communications Interface (SCI) compatible with RS-232/RS-485 levels (with external drivers), and a synchronous Serial Peripheral Interface (SPI) supporting master or slave operation. Both are independently clocked and interrupt-capable, allowing concurrent use in the MC68HC11F1CFN3R2 for diagnostics and peripheral expansion.
Is the MC68HC11F1CFN3R2 pin-compatible with other HC11 variants?
No, the MC68HC11F1CFN3R2 is not universally pin-compatible across all HC11 variants. It uses an 80-pin QFP package (FN suffix), whereas variants like the MC68HC11F1 in PLCC use 68 pins. Pin assignments differ between packages, and functions assigned to PORT G or MODA/MODB vary by variant. Always verify pin mapping against the specific MC68HC11F1CFN3R2 datasheet before board reuse.
MC68HC11F1CFN3R2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 68-LCC (J-Lead)
- Series:
- HC11
- Packaging:
- Tape & Reel (TR)
- 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:
- 30
- Program Memory Size:
- -
- Program Memory Type:
- ROMless
- EEPROM Size:
- 512 x 8
- RAM Size:
- 1K x 8
- Voltage - Supply (Vcc/Vdd):
- 4.75V ~ 5.25V
- Data Converters:
- A/D 8x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC68HC11F1CFN3R2 FAQ
1.How can I place an order for MC68HC11F1CFN3R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC68HC11F1CFN3R2 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 MC68HC11F1CFN3R2 reliable?
The price and inventory of MC68HC11F1CFN3R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC68HC11F1CFN3R2 is usually 5 days.
3.What payment methods are accepted for MC68HC11F1CFN3R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC68HC11F1CFN3R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC68HC11F1CFN3R2?
MC68HC11F1CFN3R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC68HC11F1CFN3R2 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 MC68HC11F1CFN3R2?
For technical support, including MC68HC11F1CFN3R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC68HC11F1CFN3R2 requirements.
6.How does Aetrix verify that MC68HC11F1CFN3R2 is sourced from the original manufacturer or authorized distributors?
All MC68HC11F1CFN3R2 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 MC68HC11F1CFN3R2 meets industry standards.
7.What is the process for return or replacement of MC68HC11F1CFN3R2?
All MC68HC11F1CFN3R2 units undergo pre-shipment inspection (PSI). If there is an issue with MC68HC11F1CFN3R2, 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 MC68HC11F1CFN3R2 part is unused and in its original packaging.
Return procedure for MC68HC11F1CFN3R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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