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NXP Semiconductors MC68HC711D3CFNE2
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- Part No.:
- MC68HC711D3CFNE2
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 44-LCC (J-Lead)
- Datasheet:
-
MC68HC711D3CFNE2.pdf
- Description:
- IC MCU 8BIT 4KB OTP 44PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,488
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Product details
Overview
MC68HC711D3CFNE2 from Freescale Semiconductor is a high-density HCMOS 8-bit microcontroller with 4 KB OTPROM, 192 bytes static RAM, and a 16-bit timer system featuring four-stage prescaling. It operates at up to 3 MHz bus speed, supports stop/wait low-power modes, and integrates SCI, SPI, pulse accumulator, and COP watchdog - used in legacy industrial control and automotive subsystems requiring deterministic real-time response.
For engineers reviewing the MC68HC711D3CFNE2 datasheet, MC68HC711D3CFNE2 pinout, MC68HC711D3CFNE2 application, or MC68HC711D3CFNE2 equivalent, key selection criteria include OTPROM programmability, 40-pin DIP package compatibility, single-chip mode operation, and support for NRZ serial communication without external ROM.
Technical Context
The MC68HC711D3CFNE2 implements the MC68HC11 CPU core with full instruction set compatibility, including indexed, extended, and inherent addressing modes. Its memory map provides 64 KB address space with on-chip OTPROM mapped to $E000–$EFFF and 192-byte RAM at $0080–$00FF, all retained in standby mode.
Peripheral integration includes a programmable 16-bit timer with input capture (IC1–IC4), output compare (OC1–OC5), RTI, and pulse accumulator; dual synchronous serial interfaces (SCI with idle-line/address-mark wakeup, SPI with master/slave capability); and interrupt handling via IRQ/XIRQ with priority-controlled vectoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | MC68HC11 8-bit CISC CPU with 16-bit address bus and 8-bit data bus |
| Memory | 4 KB one-time programmable ROM (OTPROM) + 192 bytes static RAM, all retained in STOP/WAIT modes |
| Bus Speed | Up to 3 MHz E-clock frequency; fully static design supports DC operation |
| Timer System | 16-bit programmable timer with 4-stage prescaler, 4 input capture, 5 output compare channels |
| Serial Interfaces | NRZ SCI (asynchronous, full-duplex, baud rate programmable) and SPI (synchronous, master/slave) |
| Power Modes | STOP mode (CPU halted, clocks off, RAM retained) and WAIT mode (CPU halted, clocks active for peripherals) |
| Operating Voltage | 4.5 V to 5.5 V supply range; specified for commercial temperature range (0°C to +70°C) |
Pinout & Package
MC68HC711D3CFNE2 is packaged in a 40-pin plastic dual in-line package (DIP), case 711-03, with 0.6-inch body width and 0.1-inch lead pitch. Pin assignments follow standard MC68HC11D3 layout with multiplexed address/data bus on Port D and dedicated control signals including RESET, IRQ, XIRQ/VPP, XTAL/EXTAL, and E-clock output.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PA0–PA7 | Port A bidirectional I/O | 8-bit general-purpose port with internal pull-ups; used for parallel I/O or timer input capture (PAI/OC1) |
| PB0–PB7 | Port B bidirectional I/O | 8-bit general-purpose port; PB0–PB3 optionally serve as SPI signals (MISO/MOSI/SCK/SS) |
| PC0–PC7 | Port C bidirectional I/O | 8-bit general-purpose port; PC0–PC1 optionally serve as SCI signals (RXD/TXD) |
| PD0–PD7 | Port D multiplexed bus | Lower 8 bits of address/data bus (AD0–AD7); PD7 = R/W control, PD6 = Address Strobe (AS) |
| RESET | Active-low reset input | Asynchronous reset signal; initiates hardware reset sequence and clears CPU registers |
| IRQ | Maskable interrupt request | Level-sensitive, edge-triggered interrupt input with priority below XIRQ |
| XIRQ/VPP | Non-maskable interrupt / programming voltage | High-priority NMI input; during programming, accepts 12.5 V VPP for OTPROM write |
| XTAL / EXTAL | Crystal oscillator inputs | Drive internal oscillator; supports crystal (1–4 MHz) or external clock source |
| E | System clock output | Output-only E-clock signal derived from internal oscillator; used for timing external logic |
Key Features
| Feature | Design Value |
|---|---|
| OTPROM programmability | 4 KB on-chip one-time programmable memory enables field firmware customization without mask ROM cost |
| Real-time interrupt (RTI) | Programmable periodic interrupt generator with 16-bit modulo counter for precise timing intervals |
| Computer Operating Properly (COP) | Watchdog timer with software-resettable timeout; prevents runaway code in safety-critical embedded systems |
| Input capture resolution | 16-bit timer with 4 independent input capture channels supports precise edge-timing measurement (e.g., motor encoder feedback) |
| SCI wakeup capability | Idle-line and address-mark wakeup modes reduce power consumption in battery-backed remote nodes |
Applications
| Industrial Motor Control | Automotive Body Controller |
|---|---|
Use Scenario: Closed-loop DC motor speed regulation using quadrature encoder feedback and PWM output. IC Role / Device Role / Timing Role: MCU executes PID loop, captures encoder edges via IC1–IC4, generates timing-critical PWM via OC1–OC5, and communicates status via SCI. Use Value: Deterministic 3 MHz bus timing ensures sub-10 µs interrupt latency for encoder edge capture and consistent 1 ms control loop execution. | Use Scenario: Centralized control of door locks, window lifts, and interior lighting in passenger vehicles. IC Role / Device Role / Timing Role: MCU acts as body electronics node, managing discrete I/O, decoding LIN/SCI messages, and executing sleep/wakeup sequences. Use Value: STOP mode reduces current draw to <10 µA while retaining RAM state, enabling fast wake-on-SCI activity without full reboot. |
| Legacy HVAC Controller | Test Equipment Firmware Loader |
Use Scenario: Temperature monitoring and relay actuation in commercial HVAC units with analog sensor inputs and fan control outputs. IC Role / Device Role / Timing Role: MCU reads thermistor ADC (via external converter), drives relays through Port B, logs events to EEPROM via SPI, and reports faults via SCI. Use Value: Integrated SPI interface eliminates need for external level-shifting logic when interfacing with serial EEPROM or flash memory. | Use Scenario: Field-upgradable firmware loader for instrumentation devices using RS-232 host connection. IC Role / Device Role / Timing Role: MCU receives binary image over SCI, validates checksum, and programs OTPROM using XIRQ/VPP high-voltage mode. Use Value: On-chip OTPROM programming capability allows secure, one-time firmware updates without external programmers or socketed EPROMs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC68HC11D3CP | ROM-based variant (no OTPROM); requires external program memory for field updates | Lacks in-system programmability; suited for fixed-function, high-volume production where firmware never changes | Select MC68HC11D3CP only if OTPROM is unnecessary and cost-per-unit is prioritized over field upgrade capability |
| MC68HC11E9CP | Includes 512 bytes of EEPROM and 256 bytes of RAM; no OTPROM; higher pin count (52-pin QFP) | Supports runtime data logging and parameter storage but lacks OTPROM's firmware update flexibility | Choose MC68HC11E9CP when EEPROM-based configuration persistence is required and PCB layout accommodates larger package |
Compared with MC68HC11D3CP and MC68HC11E9CP, the MC68HC711D3CFNE2 uniquely combines OTPROM programmability, 40-pin DIP compatibility, and full MC68HC11 instruction set - making it the only option supporting field firmware updates without external memory or package redesign.
Availability
MC68HC711D3CFNE2 is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, and legacy HVAC systems requiring stable component supply and long-term obsolescence management.
Supply support for MC68HC711D3CFNE2 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, analog, and connectivity solutions for automotive, industrial, and consumer markets.
The MC68HC711D3CFNE2 belongs to the MC68HC11 family - engineered for deterministic real-time control in resource-constrained environments where reliability, low power, and peripheral integration outweigh raw performance.
FAQ
What is the maximum operating frequency of the MC68HC711D3CFNE2?
The MC68HC711D3CFNE2 supports a maximum E-clock frequency of 3 MHz, corresponding to a 3 MHz bus speed. Its fully static CMOS design permits operation down to DC (0 Hz), enabling ultra-low-power STOP mode operation while preserving RAM contents and register states without clocking.
Does the MC68HC711D3CFNE2 support in-system programming?
Yes, the MC68HC711D3CFNE2 supports in-system programming of its 4 KB OTPROM using the XIRQ/VPP pin. Applying 12.5 V to XIRQ/VPP places the device into programming mode, allowing field firmware updates without removing the IC from the board - a key differentiator from ROM-based variants like the MC68HC11D3CP.
What package type is used by the MC68HC711D3CFNE2?
The MC68HC711D3CFNE2 uses a 40-pin plastic dual in-line package (DIP), case number 711-03, with 0.6-inch body width and 0.1-inch lead pitch. This through-hole package is compatible with legacy prototyping, manual assembly, and industrial PCBs designed for MC68HC11-series microcontrollers.
How does the MC68HC711D3CFNE2 handle power management?
The MC68HC711D3CFNE2 offers two low-power modes: WAIT mode halts the CPU while keeping clocks active for peripherals (e.g., SCI, timer), and STOP mode disables all clocks except RAM retention circuitry - reducing current draw to under 10 µA. Both modes are entered via SWI or STOP instruction and exited by RESET or interrupt.
Can the MC68HC711D3CFNE2 be used as a direct replacement for the MC68HC11D3CP?
No - while pin-compatible and functionally similar, the MC68HC711D3CFNE2 contains 4 KB OTPROM instead of ROM, and requires 12.5 V VPP on XIRQ/VPP for programming. Direct substitution is possible only if the target system does not rely on ROM boot code and includes appropriate high-voltage programming circuitry or uses pre-programmed units.
MC68HC711D3CFNE2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 44-LCC (J-Lead)
- Series:
- HC11
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- HC11
- Core Size:
- 8-Bit
- Speed:
- 2MHz
- Connectivity:
- SCI, SPI
- Peripherals:
- POR, WDT
- Number of I/O:
- 26
- Program Memory Size:
- 4KB (4K x 8)
- Program Memory Type:
- OTP
- EEPROM Size:
- -
- RAM Size:
- 192 x 8
- Voltage - Supply (Vcc/Vdd):
- 4.5V ~ 5.5V
- Data Converters:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC68HC711D3CFNE2 FAQ
1.How can I place an order for MC68HC711D3CFNE2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC68HC711D3CFNE2 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 MC68HC711D3CFNE2 reliable?
The price and inventory of MC68HC711D3CFNE2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC68HC711D3CFNE2 is usually 5 days.
3.What payment methods are accepted for MC68HC711D3CFNE2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC68HC711D3CFNE2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC68HC711D3CFNE2?
MC68HC711D3CFNE2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC68HC711D3CFNE2 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 MC68HC711D3CFNE2?
For technical support, including MC68HC711D3CFNE2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC68HC711D3CFNE2 requirements.
6.How does Aetrix verify that MC68HC711D3CFNE2 is sourced from the original manufacturer or authorized distributors?
All MC68HC711D3CFNE2 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 MC68HC711D3CFNE2 meets industry standards.
7.What is the process for return or replacement of MC68HC711D3CFNE2?
All MC68HC711D3CFNE2 units undergo pre-shipment inspection (PSI). If there is an issue with MC68HC711D3CFNE2, 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 MC68HC711D3CFNE2 part is unused and in its original packaging.
Return procedure for MC68HC711D3CFNE2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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