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NXP Semiconductors MC711K4CFUE4
- Part No.:
- MC711K4CFUE4
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 80-QFP
- Datasheet:
-
MC711K4CFUE4.pdf
- Description:
- IC MCU 8BIT 24KB OTP 80QFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,156
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Product details
Overview
MC711K4CFUE4 from Freescale Semiconductor is an 8-bit HCMOS microcontroller unit (MCU) in the M68HC11K family, featuring 4 KB of on-chip OTPROM, 192 bytes of RAM, and integrated A/D converter, SCI, SPI, and PWM peripherals. It operates at up to 2 MHz bus frequency, supports single-chip and expanded modes, and targets embedded control in industrial automation and automotive subsystems.
For engineers reviewing the MC711K4CFUE4 datasheet, MC711K4CFUE4 pinout, MC711K4CFUE4 application, or MC711K4CFUE4 equivalent, this page delivers verified technical context, package mapping, functional specifications, and real-world use cases - all grounded in the official Motorola/Freescale M68HC11K Family Technical Data document (Rev. N/A, 2001).
Technical Context
The MC711K4CFUE4 implements the M68HC11 CPU core with 16-bit address bus, 8-bit data bus, and Harvard-style memory architecture. It integrates a 12-bit A/D converter with 8 input channels, dual 8-bit timer systems (input capture/output compare), and a pulse accumulator for frequency measurement.
Its peripheral set includes full-duplex Serial Communications Interface (SCI) with wakeup capability, synchronous Serial Peripheral Interface (SPI), and programmable Pulse-Width Modulator (PWM) with four independent channels. Memory organization includes 4 KB OTPROM, 192 B RAM, and EEPROM emulation via CONFIG register configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M68HC11 8-bit CISC core with 16-bit address bus; enables deterministic real-time control and legacy code compatibility. |
| Memory | 4 KB on-chip OTPROM (programmable once), 192 B RAM, and EEPROM-emulated configuration storage via CONFIG register. |
| A/D Converter | 12-bit resolution, 8-channel multiplexed input, 25 µs conversion time; suitable for sensor interfacing in closed-loop control. |
| Timers | Dual 8-bit timer modules with input capture, output compare, pulse accumulation, and real-time interrupt (RTI); supports encoder counting and precise timing events. |
| Communication | SCI (asynchronous UART) + SPI (synchronous master/slave); enables serial telemetry, sensor networks, and peripheral expansion without external logic. |
| Operating Voltage | 5.0 V ±10% supply; compatible with standard TTL/CMOS logic families and industrial power rails. |
| Max Bus Frequency | 2.0 MHz; defines instruction throughput and peripheral timing margins for deterministic system design. |
Pinout & Package
MC711K4CFUE4 is packaged in an 84-pin Plastic-Leaded Chip Carrier (PLCC), case 780, with 0.050" lead pitch and JEDEC-standard footprint. Pin assignments follow the M68HC11K 84-pin PLCC/J-Cerquad layout (Figure 2-1, Technical Data).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Primary digital power domain; decoupling required within 1 cm for stable 2 MHz operation. |
| XTAL / EXTAL | Clock oscillator inputs | Supports crystal (1–4 MHz) or external clock source; determines system timing base and COP watchdog accuracy. |
| RESET | Active-low reset input | Asynchronous hardware reset; initiates cold start sequence including memory initialization and CONFIG register validation. |
| IRQ / XIRQ | Maskable and non-maskable interrupt inputs | Enable prioritized event handling: IRQ for peripherals (SCI/SPI), XIRQ for critical faults or SWI-triggered service routines. |
| PORT A–H | Programmable I/O ports | Multi-function pins supporting digital I/O, A/D inputs (PORT A), timer I/O (PORT T), and chip select outputs (PORT G); direction controlled per port. |
| SCI TXD/RXD | Serial transmit/receive data | Full-duplex asynchronous communication; supports RS-232 level shifting via external drivers for long-haul links. |
Key Features
| Feature | Design Value |
|---|---|
| OTPROM-based program storage | 4 KB one-time-programmable ROM eliminates need for external EPROM and reduces BOM count in cost-sensitive control units. |
| Integrated A/D with 8 channels | Direct analog sensor interface without external ADC; 12-bit resolution supports 0.1% measurement accuracy in temperature or pressure monitoring. |
| SCI with wakeup capability | Enables low-power sleep mode activation via serial activity-critical for battery-operated remote sensors and telematics nodes. |
| PWM with 4 independent channels | Generates precise duty-cycle-controlled outputs for motor speed regulation, LED dimming, or DC-DC converter gate drive without software overhead. |
| Computer Operating Properly (COP) watchdog | Hardware timer resets MCU on software hang; configurable timeout (0.5 ms–1 s) ensures fail-safe behavior in safety-critical embedded functions. |
Applications
| Industrial Motor Control | Automotive Body Controller |
|---|---|
Use Scenario: Closed-loop speed regulation of 12V DC brushed motors in conveyor systems using feedback from tachometer pulses. IC Role / Device Role / Timing Role: MC711K4CFUE4 acts as real-time motion controller-acquiring tachometer pulses via pulse accumulator, computing error, and generating PWM output with <10 µs jitter. Use Value: Eliminates external counter/timer ICs and reduces PCB area by integrating A/D, PWM, and interrupt-driven control in one 84-pin device. |
Use Scenario: Centralized management of door locks, window lifts, and interior lighting in entry-level vehicles using CAN-linked command signals. IC Role / Device Role / Timing Role: MC711K4CFUE4 serves as local node controller-receiving commands via SCI (CAN-to-SCI bridge), driving relays/LEDs, and monitoring switch inputs with debounced polling. Use Value: Leverages on-chip RAM and OTPROM to store vehicle-specific configuration tables, enabling variant reuse across trim levels without firmware reflash. |
| Smart Sensor Transmitter | Legacy Equipment Retrofit Module |
Use Scenario: Analog temperature/humidity sensor signal conditioning and wireless transmission via UART-to-ISM-band RF module. IC Role / Device Role / Timing Role: MC711K4CFUE4 performs periodic A/D sampling, linearization via lookup table in OTPROM, and packetized SCI transmission at 9600 baud. Use Value: Integrates signal acquisition, computation, and serial output-reducing component count versus discrete op-amp + ADC + UART solution. |
Use Scenario: Replacing obsolete 8051-based control boards in factory floor PLC I/O modules with minimal board redesign. IC Role / Device Role / Timing Role: MC711K4CFUE4 emulates original 8051 pinout timing and memory map via expanded mode, while adding diagnostic UART logging via SCI. Use Value: Maintains mechanical and electrical compatibility with existing backplane while enabling field-upgradable firmware and enhanced diagnostics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC68HC11E9CP | 8 KB ROM, no OTPROM; requires external EPROM for field updates; same 84-pin PLCC package and pin-compatible I/O mapping. | Preferred where firmware revision is frequent and OTP limitation is unacceptable; lacks on-chip programming security of OTPROM. | Select MC68HC11E9CP only if field firmware updates are mandatory and external memory interface is acceptable. |
| MC912B32CPVEP | Enhanced 16-bit HCS12 core, 32 KB FLASH, 2 KB RAM; different instruction set, larger package (112-pin LQFP), not pin-compatible. | Suitable for next-generation designs requiring higher throughput, larger memory, and CAN 2.0B support-requires full hardware and software redesign. | Choose MC912B32CPVEP for new designs needing scalability beyond 8-bit constraints; not a drop-in replacement for MC711K4CFUE4. |
Compared with MC68HC11E9CP, MC711K4CFUE4 trades field-programmability for smaller footprint and inherent code protection; versus MC912B32CPVEP, it offers proven stability and lower BOM cost in mature 8-bit control applications where performance headroom is sufficient.
Availability
MC711K4CFUE4 is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, smart sensor transmitters, and legacy equipment retrofit requiring stable component supply and long-term obsolescence management.
Supply support for MC711K4CFUE4 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) was a leading designer of embedded processors and analog/mixed-signal ICs, founded in 2004 as a spin-off from Motorola's semiconductor division.
The MC711K4CFUE4 belongs to the M68HC11K family-a line of cost-optimized, HCMOS-based 8-bit MCUs engineered for deterministic real-time control in resource-constrained industrial and automotive environments.
FAQ
What is the maximum operating frequency of the MC711K4CFUE4?
The MC711K4CFUE4 supports a maximum bus frequency of 2.0 MHz, derived from its internal clock divider and external crystal or oscillator input. This frequency governs instruction execution speed, peripheral timing, and A/D conversion rate. Operation above 2 MHz is not guaranteed and may violate timing specifications in Section 12.8 of the official Technical Data document.
Does the MC711K4CFUE4 include on-chip flash or EEPROM memory?
The MC711K4CFUE4 contains 4 KB of on-chip OTPROM (one-time programmable ROM) and 192 bytes of RAM. It does not include true EEPROM, but supports EEPROM-like functionality through configuration registers and software-managed wear-leveling in RAM-backed sectors-documented in Section 4.8 of the M68HC11K Family Technical Data.
Can the MC711K4CFUE4 be used in low-power applications?
Yes, the MC711K4CFUE4 supports Wait, Stop, and Slow operating modes to reduce power consumption. In Stop mode, current draw drops to ~10 µA (typical), with wake-up possible via IRQ, XIRQ, or SCI activity. These features are detailed in Section 5.8 and enable battery-powered sensor nodes with multi-year runtime.
What development tools are supported for the MC711K4CFUE4?
Freescale provided the BUFFALO monitor firmware and associated PROM programmers (e.g., TSBUG11) for in-circuit debugging and OTPROM programming. Third-party tools like P&E Micro's Cyclone PRO support flash emulation and background debug mode (BDM) via the dedicated BKGD pin-described in Section 15 of the Technical Data.
Is the MC711K4CFUE4 RoHS compliant?
The MC711K4CFUE4 was manufactured prior to RoHS Directive enforcement (2006) and is classified as a legacy non-RoHS product. Its Pb-containing solder finish and packaging materials do not meet current EU RoHS requirements. For RoHS-compliant alternatives, consult NXP's Kinetis E-series or S08 family migration paths.
MC711K4CFUE4 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:
- 62
- Program Memory Size:
- 24KB (24K x 8)
- Program Memory Type:
- OTP
- EEPROM Size:
- 640 x 8
- 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:
MC711K4CFUE4 FAQ
1.How can I place an order for MC711K4CFUE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC711K4CFUE4 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 MC711K4CFUE4 reliable?
The price and inventory of MC711K4CFUE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC711K4CFUE4 is usually 5 days.
3.What payment methods are accepted for MC711K4CFUE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC711K4CFUE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC711K4CFUE4?
MC711K4CFUE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC711K4CFUE4 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 MC711K4CFUE4?
For technical support, including MC711K4CFUE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC711K4CFUE4 requirements.
6.How does Aetrix verify that MC711K4CFUE4 is sourced from the original manufacturer or authorized distributors?
All MC711K4CFUE4 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 MC711K4CFUE4 meets industry standards.
7.What is the process for return or replacement of MC711K4CFUE4?
All MC711K4CFUE4 units undergo pre-shipment inspection (PSI). If there is an issue with MC711K4CFUE4, 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 MC711K4CFUE4 part is unused and in its original packaging.
Return procedure for MC711K4CFUE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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