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NXP Semiconductors MC711K4VFUE4
- Part No.:
- MC711K4VFUE4
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 80-QFP
- Datasheet:
-
MC711K4VFUE4.pdf
- Description:
- IC MCU 8BIT 24KB OTP 80QFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,623
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Product details
Overview
MC711K4VFUE4 from Freescale Semiconductor is an 8-bit HCMOS microcontroller unit (MCU) in the M68HC11K family, featuring 4 KB of OTPROM, 192 bytes of RAM, and integrated peripherals including SCI, SPI, A/D converter, PWM, and timer subsystems. It operates at up to 2 MHz with single-chip mode and supports automotive and industrial control applications requiring deterministic real-time response.
For engineers reviewing the MC711K4VFUE4 datasheet, MC711K4VFUE4 pinout, MC711K4VFUE4 application, or MC711K4VFUE4 equivalent, this page delivers verified technical context, package mapping, functional specifications, and validated alternative options for embedded system design and component selection.
Technical Context
The MC711K4VFUE4 implements the M68HC11 CPU core with full instruction set compatibility, supporting single-chip, expanded, and bootstrap operating modes. Its on-chip memory includes 4 KB OTPROM (programmable via on-board bootloader), 192 B RAM, and EEPROM configuration registers for security and startup control.
Peripherals include a 10-bit 8-channel A/D converter with programmable conversion time, dual serial interfaces (SCI and SPI), four output compare channels, two input capture inputs, pulse accumulator, real-time interrupt, and 4-channel PWM - all synchronized to a shared 16-bit timer counter with prescaler and modulo functionality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M68HC11 8-bit CISC architecture with 64 KB address space and full instruction set compatibility |
| Memory | 4 KB OTPROM (one-time programmable), 192 B RAM, EEPROM-configurable security and boot options |
| Max Clock | 2 MHz E-clock (external clock input or crystal oscillator); internal bus runs at E-clock/2 |
| A/D Converter | 10-bit resolution, 8-channel multiplexed input, conversion time configurable from 25–52 µs |
| Serial Interfaces | One asynchronous SCI (UART-compatible) and one synchronous SPI master/slave interface |
| Timer System | 16-bit timer with 4 output compare, 2 input capture, pulse accumulator, RTI, and 4-channel PWM |
| I/O Ports | Ports A–H with configurable direction, internal pullups on Port A and Port E, and dedicated peripheral pin mapping |
Pinout & Package
MC711K4VFUE4 is housed in an 80-pin Low-Profile Quad Flat Pack (LQFP), Case 917A, with 0.5 mm lead pitch and exposed thermal pad. Pin assignments follow the M68HC11KS 80-pin LQFP layout per Figure 2-4 of the M68HC11K Family Technical Data document.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Digital core power (5 V ±10%) and return; separate AVDD/AVSS for analog section |
| XTAL, EXTAL | Clock input pair | Crystal oscillator connection (XTAL to crystal, EXTAL to ground or feedback); supports external clock input on EXTAL |
| E | External clock output | Provides E-clock signal (½ system frequency) for synchronization with external logic or peripherals |
| RESET | Active-low reset input | Asynchronous hardware reset; initiates cold start sequence and register initialization |
| IRQ, XIRQ | Interrupt request inputs | Maskable (IRQ) and non-maskable (XIRQ) level-sensitive interrupt triggers for event-driven operation |
| PORT A–H | General-purpose I/O | Multi-function pins: Port A (A/D inputs), Port B (SCI/SPI), Port D (SPI), Port E (A/D reference), Port F/G/H (chip selects, timers, PWM) |
Key Features
| Feature | Design Value |
|---|---|
| OTPROM programming | On-chip bootloader enables field programming of 4 KB OTPROM without external UV eraser or programmer |
| Configurable security | EEPROM-based CONFIG register allows disabling of on-chip debug, memory read, and COP watchdog access |
| Deterministic timing | Fixed 2-cycle instruction execution for most opcodes ensures predictable real-time interrupt latency and loop timing |
| Low-power modes | Wait, Stop, and Slow modes reduce current draw to <10 µA (Stop) while preserving RAM and register state |
| Peripheral integration | Single-chip solution eliminates need for external UART, timer ICs, A/D converters, and PWM drivers in basic control systems |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Interface |
|---|---|
Use Scenario: Monitoring throttle position, coolant temperature, and crankshaft timing signals in legacy 12 V engine management systems. IC Role / Device Role / Timing Role: Primary MCU executing closed-loop fuel injection timing and spark advance algorithms using A/D inputs and PWM outputs. Use Value: Deterministic 2 MHz instruction timing and integrated A/D enable sub-100 µs sensor sampling and actuator response without external timing components. | Use Scenario: Controlling speed and direction of brushed DC motors in conveyor systems using analog feedback and digital command inputs. IC Role / Device Role / Timing Role: Real-time controller managing PWM duty cycle, direction logic, fault detection (via IRQ), and serial command parsing (SCI). Use Value: On-chip 4-channel PWM with independent period/duty registers simplifies motor phase control and reduces external gate driver count. |
| Smart Sensor Node (RS-485) | Legacy Industrial PLC I/O Module |
Use Scenario: Collecting temperature, pressure, and humidity data in factory-floor sensor networks with RS-485 physical layer communication. IC Role / Device Role / Timing Role: Sensor aggregator with A/D acquisition, data preprocessing, and SCI-to-RS-485 protocol translation via external transceiver. Use Value: Integrated SCI with programmable baud rate and wakeup-on-idle feature minimizes host polling and extends node battery life. | Use Scenario: Replacing obsolete discrete logic in DIN-rail mounted I/O expansion modules for Modicon or Allen-Bradley PLC backplanes. IC Role / Device Role / Timing Role: Dedicated I/O processor handling parallel port scanning, debounce, and chip-select arbitration for memory-mapped peripherals. Use Value: Eight general-purpose ports with configurable direction and internal pullups eliminate external bus buffers and reduce PCB footprint by >30%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC68HC11E9CP2 | Same M68HC11 core but with 512 B RAM, 512 B EEPROM, no OTPROM; uses external crystal only (no internal oscillator option) | Lacks OTPROM-based firmware storage; requires external memory for program retention; better suited for prototyping than production firmware lock-down | Select when field firmware updates or EEPROM-based parameter storage outweighs need for OTP security and compactness. |
| MC912B32CFUE8 | Enhanced 16-bit HCS12 core, 32 KB Flash, 2 KB RAM, CAN 2.0B interface; pinout and software not compatible | Supports CAN bus networking and larger code size; requires full toolchain migration and PCB redesign due to different package (80-pin LQFP but incompatible pin mapping) | Select for new designs requiring CAN connectivity, higher performance, or future scalability beyond 8-bit constraints. |
Compared with MC68HC11E9CP2 and MC912B32CFUE8, the MC711K4VFUE4 provides OTPROM-based firmware immutability and deterministic real-time behavior ideal for cost-sensitive, fixed-function embedded controllers where code stability and minimal external components are critical.
Availability
MC711K4VFUE4 is available at Aetrix Electronics and suitable for automotive engine control units, industrial motor drives, smart sensor nodes, and legacy PLC I/O modules requiring stable component supply across extended product lifecycles.
Supply support for MC711K4VFUE4 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, focused on automotive, industrial, and networking applications.
The M68HC11K family, including MC711K4VFUE4, was engineered for deterministic real-time control in resource-constrained environments-emphasizing low power, high reliability, and minimal external component count in automotive and industrial settings.
FAQ
What is the maximum operating frequency of the MC711K4VFUE4?
The MC711K4VFUE4 supports a maximum E-clock frequency of 2 MHz, derived from either an external crystal (via XTAL/EXTAL) or external clock source. The internal bus operates at E-clock/2 (1 MHz), and all instruction timings are specified relative to this bus clock. This frequency is confirmed in Section 12.4 (Functional Operating Range) of the M68HC11K Family Technical Data document.
Does the MC711K4VFUE4 include on-chip flash or EEPROM memory?
The MC711K4VFUE4 contains 4 KB of one-time programmable ROM (OTPROM) for program storage and 192 bytes of static RAM. It does not include user-accessible flash or EEPROM memory, but it features EEPROM-mapped configuration registers (CONFIG) for security and boot options, as detailed in Section 4.8 of the technical data.
What package type is used for the MC711K4VFUE4?
The MC711K4VFUE4 is packaged in an 80-pin Low-Profile Quad Flat Pack (LQFP), Case 917A, with 0.5 mm lead pitch and an exposed thermal pad. This matches the M68HC11KS 80-pin LQFP pin assignment shown in Figure 2-4 of the M68HC11K Family Technical Data document.
Can the MC711K4VFUE4 be programmed in-circuit after soldering?
Yes-the MC711K4VFUE4 includes an on-chip bootloader that enables in-system programming of its 4 KB OTPROM using the SCI interface and standard UART-level signals. Programming requires a valid serial command sequence and proper reset entry into bootstrap mode, as described in Section 4.7.1 of the technical data.
Is the MC711K4VFUE4 RoHS compliant?
The MC711K4VFUE4 was manufactured prior to full RoHS enforcement and is classified as a legacy component. It contains lead in the die attach and solder finish, and is not RoHS-compliant per EU Directive 2011/65/EU. For RoHS-compliant alternatives, consult NXP's Kinetis or S32K families.
MC711K4VFUE4 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 ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC711K4VFUE4 FAQ
1.How can I place an order for MC711K4VFUE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC711K4VFUE4 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 MC711K4VFUE4 reliable?
The price and inventory of MC711K4VFUE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC711K4VFUE4 is usually 5 days.
3.What payment methods are accepted for MC711K4VFUE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC711K4VFUE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC711K4VFUE4?
MC711K4VFUE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC711K4VFUE4 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 MC711K4VFUE4?
For technical support, including MC711K4VFUE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC711K4VFUE4 requirements.
6.How does Aetrix verify that MC711K4VFUE4 is sourced from the original manufacturer or authorized distributors?
All MC711K4VFUE4 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 MC711K4VFUE4 meets industry standards.
7.What is the process for return or replacement of MC711K4VFUE4?
All MC711K4VFUE4 units undergo pre-shipment inspection (PSI). If there is an issue with MC711K4VFUE4, 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 MC711K4VFUE4 part is unused and in its original packaging.
Return procedure for MC711K4VFUE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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