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NXP Semiconductors MC68HC711K4CFN4
- Part No.:
- MC68HC711K4CFN4
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 84-LCC (J-Lead)
- Datasheet:
-
MC68HC711K4CFN4.pdf
- Description:
- IC MCU 8BIT 24KB OTP 84PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,583
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Product details
Overview
MC68HC711K4CFN4 from Freescale Semiconductor is an 8-bit HCMOS microcontroller unit (MCU) featuring 4 KB of on-chip EPROM, 192 bytes of RAM, and integrated peripherals including a 10-bit A/D converter, SCI, SPI, PWM, and timer subsystem with input capture/output compare. It operates at up to 2 MHz in single-chip mode and targets embedded control in automotive body electronics and industrial sensor interfaces.
For engineers reviewing the MC68HC711K4CFN4 datasheet, MC68HC711K4CFN4 pinout, MC68HC711K4CFN4 application, or MC68HC711K4CFN4 equivalent, key selection criteria include EPROM programmability, on-chip A/D resolution and channel count, SCI/SPI interface availability, PWM output capability, and compatibility with legacy M68HC11 development tools and bootloaders.
Technical Context
The MC68HC711K4CFN4 implements the M68HC11 CPU core with full instruction set compatibility, supporting single-chip, expanded, and bootstrap operating modes. Its memory map includes dedicated register space, RAM, EPROM, EEPROM configuration registers, and bootloader ROM - all accessible via internal bus without external address latching.
Peripherals are tightly coupled to the CPU via memory-mapped I/O: the 10-bit A/D converter supports 8-channel multiplexed input with software- or timer-triggered conversion; the SCI provides asynchronous serial communication with baud rate generation and wakeup capability; the SPI supports master/slave operation with mode fault detection; and the 16-bit timer system delivers input capture, output compare, pulse accumulation, real-time interrupt, and four-channel PWM with independent period/duty cycle registers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M68HC11 8-bit CISC architecture, fully compatible with M6805/M6801 instruction set |
| EPROM Size | 4 KB on-chip EPROM (erasable via UV light), used for program storage and non-volatile code execution |
| RAM Size | 192 bytes of on-chip static RAM for data and stack operations |
| A/D Converter | 10-bit resolution, 8-channel single-ended input, software- or timer-triggered conversion |
| Max Clock Frequency | 2 MHz E-clock (derived from crystal or external source), defining instruction timing and peripheral throughput |
| I/O Ports | Ports A–H with configurable direction, internal pullups on Port B, and dedicated peripheral signal mapping |
| Package | 84-pin PLCC (Plastic Leaded Chip Carrier), case 780, surface-mount compatible with standard reflow profiles |
Pinout & Package
MC68HC711K4CFN4 is housed in an 84-pin Plastic Leaded Chip Carrier (PLCC), case 780, with 0.050″ lead pitch and JEDEC-standard footprint. The package supports socketing and rework-friendly soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Digital core power (5 V ±10%) and return; separate AVDD/AVSS pins available for analog section isolation |
| XTAL / EXTAL | Clock input pair | Crystal oscillator connection (XTAL) or external clock input (EXTAL); determines system timing base |
| E | External clock output | Provides synchronized E-clock (½ CPU frequency) for external logic timing coordination |
| RESET | Active-low reset input | Asynchronous hardware reset; initiates cold start sequence and register initialization |
| IRQ / XIRQ | Maskable and non-maskable interrupt inputs | Supports prioritized interrupt handling; XIRQ cannot be disabled by software interrupt mask |
| PORT A–H | General-purpose I/O with peripheral overlay | Multi-function pins: e.g., PA0–PA7 serve as A/D inputs or general I/O; PB0–PB7 support SCI/SPI signals |
Key Features
| Feature | Design Value |
|---|---|
| On-chip EPROM programming | Enables field firmware updates via onboard bootloader without UV eraser or external programmer |
| Integrated 10-bit A/D converter | Eliminates need for external ADC in cost-sensitive sensor monitoring applications (e.g., temperature, pressure) |
| SCI and SPI serial interfaces | Provides native UART and synchronous serial connectivity for diagnostics, configuration, and peripheral expansion |
| Four-channel PWM generator | Supports motor speed control, LED dimming, and DC-DC converter feedback without external ICs |
| Configurable operating modes | Single-chip mode reduces BOM count; expanded mode enables external memory mapping for larger applications |
Applications
| Automotive Body Control | Industrial Sensor Interface |
|---|---|
Use Scenario: Central body controller managing door locks, window lifts, and interior lighting in passenger vehicles. IC Role / Device Role / Timing Role: Primary MCU executing real-time control logic, reading switch inputs, driving relays/LEDs, and communicating via SCI with dashboard module. Use Value: On-chip EPROM stores vehicle-specific calibration; 10-bit A/D reads potentiometer-based position sensors; PWM drives LED brightness control with 256-step resolution. | Use Scenario: Standalone environmental monitor measuring temperature, humidity, and CO₂ in HVAC ducts. IC Role / Device Role / Timing Role: Sensor fusion hub acquiring analog signals, performing linearization, and transmitting data over SCI to building management system. Use Value: Integrated A/D eliminates external signal conditioning; low-power wait/stop modes extend battery life; SPI interfaces with digital humidity sensor ICs. |
| Legacy Industrial PLC I/O Module | Motor Control Subsystem |
Use Scenario: DIN-rail mounted I/O expansion module adding 8 digital inputs and 4 analog inputs to programmable logic controller. IC Role / Device Role / Timing Role: Dedicated I/O processor handling signal acquisition, debounce, and protocol translation between field devices and main PLC CPU. Use Value: Memory-mapped I/O simplifies driver development; on-chip EEPROM stores channel scaling factors; SCI enables Modbus RTU slave implementation. | Use Scenario: Brushed DC motor controller for conveyor belt drive in packaging equipment. IC Role / Device Role / Timing Role: Real-time motion controller generating PWM outputs, reading quadrature encoder feedback via input capture, and implementing closed-loop speed regulation. Use Value: Input capture measures encoder period for RPM calculation; four PWM channels support dual-motor control or H-bridge gate drive; timer interrupts ensure deterministic loop timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC68HC11E9CP2 | 8 KB EPROM, 512 bytes RAM, identical pinout and peripheral set; higher memory capacity | Supports larger firmware images and more complex control algorithms without external memory | Select when application requires >4 KB program space or additional RAM for data logging buffers |
| MC912B32CPV | Enhanced 68HC12 core, 32 KB FLASH, CAN interface, different instruction set and memory map | Enables CAN bus integration and faster processing but requires full firmware rewrite and PCB layout change | Choose for new designs needing CAN connectivity or future scalability; not drop-in compatible |
Compared with MC68HC711K4CFN4, the MC68HC11E9CP2 offers direct memory upgrade within the same footprint and toolchain, while the MC912B32CPV introduces CAN and FLASH but mandates architectural migration - making the former ideal for memory-constrained legacy upgrades and the latter suitable only for greenfield CAN-based systems.
Availability
MC68HC711K4CFN4 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, legacy PLC I/O modules, and motor control subsystems requiring stable component supply across long-lifecycle production programs.
Supply support for MC68HC711K4CFN4 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 MC68HC711K4CFN4 belongs to the M68HC11K family, engineered for cost-effective, low-power embedded control in automotive and industrial environments where deterministic real-time response, on-chip non-volatile memory, and peripheral integration are critical.
FAQ
What is the maximum operating frequency of the MC68HC711K4CFN4?
The MC68HC711K4CFN4 supports a maximum E-clock frequency of 2 MHz, derived from an external crystal (typically 4 MHz) or oscillator input. This corresponds to a 4 MHz internal bus clock, enabling instruction execution at approximately 500 ns per cycle in single-chip mode. System timing must comply with AC electrical characteristics specified in Section 12.8 of the datasheet.
Does the MC68HC711K4CFN4 include on-chip EEPROM?
No, the MC68HC711K4CFN4 does not contain user-accessible EEPROM. It features 4 KB of EPROM for program storage and 192 bytes of RAM. Configuration data is stored in dedicated CONFIG registers that emulate EEPROM behavior using on-chip latch-based non-volatile storage, but true byte-erasable EEPROM is absent in this variant.
Can the MC68HC711K4CFN4 be programmed in-circuit?
Yes, the MC68HC711K4CFN4 supports in-circuit programming via its built-in bootloader ROM. Using the SCI interface and compatible host software (e.g., P&E Micro's BUFFALO), users can download and program the on-chip EPROM without removing the device from the board - provided the target system supplies proper voltage, clock, and RESET sequencing during programming mode entry.
What development tools are compatible with the MC68HC711K4CFN4?
The MC68HC711K4CFN4 is supported by legacy Freescale development tools including the M68HC11 Evaluation Board (MEVB), BUFFALO monitor firmware, and CodeWarrior Development Studio v5.x. Third-party tools such as P&E Micro's USB-ML-12 and Cyclone Auto programmers also provide full debug and flash programming capability through the SCI or MON08 interface.
Is the MC68HC711K4CFN4 RoHS compliant?
The MC68HC711K4CFN4 was manufactured prior to RoHS Directive enforcement and is classified as a non-RoHS product. It contains lead in the die attach, bond wires, and PLCC package finish. For RoHS-compliant alternatives, consider NXP's S12XE or S12ZVM families - though these require full hardware and software redesign due to architectural differences.
MC68HC711K4CFN4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 84-LCC (J-Lead)
- Series:
- HC11
- Packaging:
- Tube
- 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:
MC68HC711K4CFN4 FAQ
1.How can I place an order for MC68HC711K4CFN4 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC68HC711K4CFN4 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 MC68HC711K4CFN4 reliable?
The price and inventory of MC68HC711K4CFN4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC68HC711K4CFN4 is usually 5 days.
3.What payment methods are accepted for MC68HC711K4CFN4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC68HC711K4CFN4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC68HC711K4CFN4?
MC68HC711K4CFN4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC68HC711K4CFN4 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 MC68HC711K4CFN4?
For technical support, including MC68HC711K4CFN4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC68HC711K4CFN4 requirements.
6.How does Aetrix verify that MC68HC711K4CFN4 is sourced from the original manufacturer or authorized distributors?
All MC68HC711K4CFN4 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 MC68HC711K4CFN4 meets industry standards.
7.What is the process for return or replacement of MC68HC711K4CFN4?
All MC68HC711K4CFN4 units undergo pre-shipment inspection (PSI). If there is an issue with MC68HC711K4CFN4, 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 MC68HC711K4CFN4 part is unused and in its original packaging.
Return procedure for MC68HC711K4CFN4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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