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NXP Semiconductors MC68HC11K0CFUE4
- Part No.:
- MC68HC11K0CFUE4
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 80-QFP
- Datasheet:
-
MC68HC11K0CFUE4.pdf
- Description:
- IC MCU 8BIT ROMLESS 80QFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,470
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Product details
Overview
MC68HC11K0CFUE4 from NXP Semiconductors (formerly Freescale/Motorola) is an 8-bit HCMOS microcontroller unit featuring 512 bytes of on-chip EEPROM, 512 bytes of RAM, and 24 KB of ROM. It integrates a 16-bit timer subsystem with input capture, output compare, pulse accumulator, and real-time interrupt functions, plus an 8-channel 8-bit analog-to-digital converter. It is used in embedded industrial control systems requiring deterministic timing and nonvolatile configuration storage.
For engineers reviewing the MC68HC11K0CFUE4 datasheet, MC68HC11K0CFUE4 pinout, MC68HC11K0CFUE4 application, or MC68HC11K0CFUE4 equivalent, key selection criteria include its 84-pin PLCC package, single-chip mode operation, 2 MHz internal bus frequency, EEPROM endurance (10k write/erase cycles), and compatibility with legacy M68HC11 development tools and assembly-language firmware.
Technical Context
The MC68HC11K0CFUE4 implements the classic M68HC11 CPU core with full instruction set compatibility to the Motorola 6800 architecture. It operates in single-chip mode by default, using on-chip memory without external bus expansion, and supports three low-power modes: wait, stop, and slow.
Its peripheral suite includes a full-duplex Serial Communications Interface (SCI) with programmable baud rate, a synchronous Serial Peripheral Interface (SPI), and a flexible 8-channel A/D converter with software-selectable conversion speed and resolution. All peripherals are memory-mapped and controlled via dedicated I/O registers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M68HC11 8-bit CISC core, upward-compatible with 6800 instruction set; enables reuse of legacy firmware and toolchains. |
| Max Bus Frequency | 2 MHz - determines maximum instruction throughput and peripheral timing margins in single-chip mode. |
| On-Chip Memory | 24 KB ROM (mask-programmed), 512 B RAM, 512 B EEPROM - eliminates need for external nonvolatile storage in simple control applications. |
| A/D Converter | 8-channel, 8-bit successive-approximation ADC with 25 µs max conversion time; supports single-ended or differential inputs. |
| Timer System | 16-bit timer with 4 input capture, 5 output compare channels, pulse accumulator, and real-time interrupt - enables precise event timing, PWM generation, and encoder counting. |
| I/O Ports | Ports A–H with configurable direction and internal pull-ups; Port A doubles as analog input pins for A/D; Port D supports SPI signals. |
| Package | 84-pin Plastic Leaded Chip Carrier (PLCC), case 780 - provides robust through-hole mounting and thermal performance for industrial PCBs. |
Pinout & Package
MC68HC11K0CFUE4 is housed in an 84-pin Plastic Leaded Chip Carrier (PLCC) per Motorola case 780 mechanical specification. This surface-mount-compatible package features a square body with J-shaped leads, rated for industrial temperature range (–40°C to +85°C) and 10-year data retention in EEPROM.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Digital core power (5 V ±10%) and return; decoupling required within 1 cm of pins. |
| AVDD, AVSS | Analog power and ground | Separate analog supply pins reduce noise coupling into A/D converter reference path. |
| XTAL / EXTAL | Crystal oscillator input/output | Supports 4 MHz crystal for 2 MHz E-clock; internal oscillator circuit eliminates need for external clock generator. |
| E | External clock output | Provides synchronized 2 MHz E-clock signal for timing external logic or peripherals. |
| RESET | Active-low reset input | Asynchronous reset that clears CPU registers and initializes peripheral control registers to known states. |
| IRQ / XIRQ | Maskable and non-maskable interrupt inputs | Enable prioritized response to external events; XIRQ cannot be disabled by software, ensuring critical fault handling. |
| PORT A (PA0–PA7) | Bi-directional I/O / A/D inputs | Configurable digital I/O; when A/D enabled, PA0–PA7 serve as analog input channels with programmable gain. |
| PORT D (PD0–PD7) | Bi-directional I/O / SPI interface | Supports MOSI, MISO, SCK, and SS signals for master/slave SPI communication without additional glue logic. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip EEPROM (512 B) | Enables field-updatable calibration data, device configuration, and runtime parameter storage without external serial EEPROM. |
| Single-chip mode operation | Eliminates external address/data bus components and simplifies PCB layout for cost-sensitive embedded controllers. |
| Integrated A/D converter (8 ch × 8-bit) | Reduces BOM count and board space by integrating sensor interface functionality directly into the MCU. |
| Real-time interrupt (RTI) with programmable period | Provides deterministic periodic servicing for time-critical tasks such as motor commutation or PID loop execution. |
| Computer Operating Properly (COP) watchdog | Hardware-based timeout circuit prevents system lockup due to software faults; requires periodic service to avoid reset. |
Applications
| Motor Control | Industrial Sensor Node |
|---|---|
Use Scenario: Brushless DC motor commutation in HVAC blowers using Hall-effect feedback. IC Role / Device Role / Timing Role: MC68HC11K0CFUE4 executes commutation logic, reads Hall sensors via Port A, generates timed gate-drive pulses via output compare, and adjusts speed via SCI-set parameters. Use Value: On-chip RTI and output compare enable sub-100 µs timing precision for six-step commutation without external timers. | Use Scenario: Standalone temperature/humidity monitoring node with analog sensor inputs and RS-232 telemetry. IC Role / Device Role / Timing Role: MC68HC11K0CFUE4 conditions analog outputs from thermistor and capacitive humidity sensors, stores calibration coefficients in EEPROM, and transmits data via SCI UART. Use Value: Integrated 8-bit A/D and EEPROM eliminate discrete signal-conditioning ICs and external nonvolatile memory, reducing component count by ≥4. |
| Legacy Automotive Subsystem | Programmable Logic Controller (PLC) I/O Module |
Use Scenario: Engine coolant temperature and throttle position interface in pre-OBD-II vehicle ECUs. IC Role / Device Role / Timing Role: MC68HC11K0CFUE4 acquires analog sensor data, performs linearization using lookup tables stored in ROM, and communicates status over SCI to main ECU. Use Value: Mask ROM content ensures zero firmware update risk in safety-critical subsystems; COP watchdog guarantees fail-safe behavior during voltage transients. | Use Scenario: DIN-rail mounted digital I/O expansion module with isolated inputs and relay drivers. IC Role / Device Role / Timing Role: MC68HC11K0CFUE4 scans opto-isolated inputs via Port B, controls solid-state relays via Port C, and reports status via RS-485 (SCI with external transceiver). Use Value: 8-bit parallel I/O ports with internal pull-ups simplify interface to industrial-level 24 VDC sensors and actuators without external biasing resistors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC68HC11E9CP | Same CPU core and peripheral set but in 80-pin QFP; 512 B EEPROM, 512 B RAM, 512 B ROM (no mask ROM); requires external program memory. | Lacks on-chip 24 KB ROM; suitable only where firmware resides externally or is loaded via bootloader. | Select MC68HC11E9CP only if design requires QFP packaging and external memory architecture. |
| MC9S12XDP512 | 16-bit HCS12X core, 512 KB flash, enhanced SCI/SPI/PWM, CAN 2.0B interface; not binary-compatible. | Offers CAN connectivity and larger memory for networked control, but requires complete firmware rewrite and new toolchain. | Choose MC9S12XDP512 for new designs needing CAN bus integration and scalability beyond 8-bit performance limits. |
Compared with MC68HC11E9CP and MC9S12XDP512, the MC68HC11K0CFUE4 delivers self-contained operation with mask ROM and EEPROM in a mature, pin-stable PLCC package-ideal for long-lifecycle industrial replacements where firmware immutability and minimal BOM are critical.
Availability
MC68HC11K0CFUE4 is available at Aetrix Electronics and suitable for industrial motor control, legacy automotive subsystems, sensor interface modules, and programmable logic controller I/O expansion requiring stable component supply and long-term obsolescence management.
Supply support for MC68HC11K0CFUE4 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 and later the acquisition of Freescale Semiconductor. It specializes in secure connectivity solutions for automotive, industrial, and IoT markets.
The MC68HC11K0CFUE4 belongs to the M68HC11K family, designed specifically for cost-sensitive, high-reliability embedded control applications where deterministic real-time response, on-chip nonvolatile storage, and long-term supply stability are essential.
FAQ
What is the maximum operating frequency of the MC68HC11K0CFUE4?
The MC68HC11K0CFUE4 operates with a maximum internal bus frequency of 2 MHz, derived from a 4 MHz crystal connected to XTAL/EXTAL. This frequency governs instruction execution speed, peripheral timing, and A/D conversion rate. Exceeding this limit may cause undefined behavior or failure to meet timing specifications in the datasheet.
Does the MC68HC11K0CFUE4 include a hardware watchdog timer?
Yes, the MC68HC11K0CFUE4 includes a Computer Operating Properly (COP) watchdog timer. It must be periodically cleared by firmware to prevent automatic system reset. The COP timeout period is selectable via the CONFIG register and defaults to approximately 1.8 ms after reset, providing reliable fault recovery in safety-critical embedded applications.
Can the MC68HC11K0CFUE4 operate without external memory?
Yes, the MC68HC11K0CFUE4 is configured for single-chip mode by default and contains 24 KB of on-chip mask-programmed ROM, 512 bytes of RAM, and 512 bytes of EEPROM. No external memory is required for basic operation, making it ideal for compact, low-component-count control systems.
What package type is used for the MC68HC11K0CFUE4?
The MC68HC11K0CFUE4 uses an 84-pin Plastic Leaded Chip Carrier (PLCC) package, Motorola case number 780. It features a 25.4 mm × 25.4 mm body with J-bend leads, rated for industrial temperature range (–40°C to +85°C), and supports both through-hole and surface-mount reflow assembly.
Is the MC68HC11K0CFUE4 pin-compatible with other M68HC11 variants?
The MC68HC11K0CFUE4 shares the same 84-pin PLCC pinout as other members of the M68HC11K family (e.g., MC68HC11K4), but is not pin-compatible with 68-pin or 80-pin variants like the MC68HC11KS2 or MC68HC11E9. Pin assignments for PORT A–H, power, clocks, and interrupts are consistent across the 84-pin K-series derivatives.
MC68HC11K0CFUE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 80-QFP
- Series:
- HC11
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- HC11
- Core Size:
- 8-Bit
- Speed:
- 4MHz
- Connectivity:
- SCI, SPI
- Peripherals:
- POR, PWM, WDT
- Number of I/O:
- 37
- Program Memory Size:
- -
- Program Memory Type:
- ROMless
- EEPROM Size:
- -
- RAM Size:
- 768 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:
MC68HC11K0CFUE4 FAQ
1.How can I place an order for MC68HC11K0CFUE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC68HC11K0CFUE4 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 MC68HC11K0CFUE4 reliable?
The price and inventory of MC68HC11K0CFUE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC68HC11K0CFUE4 is usually 5 days.
3.What payment methods are accepted for MC68HC11K0CFUE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC68HC11K0CFUE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC68HC11K0CFUE4?
MC68HC11K0CFUE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC68HC11K0CFUE4 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 MC68HC11K0CFUE4?
For technical support, including MC68HC11K0CFUE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC68HC11K0CFUE4 requirements.
6.How does Aetrix verify that MC68HC11K0CFUE4 is sourced from the original manufacturer or authorized distributors?
All MC68HC11K0CFUE4 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 MC68HC11K0CFUE4 meets industry standards.
7.What is the process for return or replacement of MC68HC11K0CFUE4?
All MC68HC11K0CFUE4 units undergo pre-shipment inspection (PSI). If there is an issue with MC68HC11K0CFUE4, 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 MC68HC11K0CFUE4 part is unused and in its original packaging.
Return procedure for MC68HC11K0CFUE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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