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NXP Semiconductors MC68HC711D3CFN2
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- Part No.:
- MC68HC711D3CFN2
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 44-LCC (J-Lead)
- Datasheet:
-
MC68HC711D3CFN2.pdf
- Description:
- IC MCU 8BIT 4KB OTP 44PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,315
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Product details
Overview
MC68HC711D3CFN2 from Freescale Semiconductor is a high-density HCMOS 8-bit microcontroller with 4 KB OTPROM, 192 bytes static RAM, and a 16-bit programmable timer system. It operates at up to 3 MHz bus speed, supports single-chip and expanded multiplexed modes, and integrates SCI, SPI, pulse accumulator, COP watchdog, and RTI - used in industrial control, automotive subsystems, and legacy embedded instrumentation.
For engineers reviewing the MC68HC711D3CFN2 datasheet, MC68HC711D3CFN2 pinout, MC68HC711D3CFN2 application, or MC68HC711D3CFN2 equivalent, this page delivers verified technical context, package-specific pin assignments, real-world use cases, and validated alternative options for legacy design continuity and supply chain resilience.
Technical Context
The MC68HC711D3CFN2 implements a fully static CPU core derived from the MC68HC11E9 architecture, supporting zero-wait-state operation down to DC. Its memory map provides 64 KB addressability with on-chip OTPROM (4 KB), 192-byte RAM (retained in standby), and configurable I/O port registers mapped into the memory space.
Peripheral integration includes an NRZ-format SCI with idle-line and address-mark wakeup, a full-duplex SPI master/slave interface, a 4-stage prescaled 16-bit timer with input capture/compare channels (IC1–IC4, OC1–OC5), and an 8-bit pulse accumulator with overflow interrupt capability - all controlled via dedicated memory-mapped registers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 8-bit CISC CPU compatible with MC68HC11 instruction set; fully static design enables DC to 3 MHz operation. |
| Memory | 4 KB one-time programmable ROM (OTPROM); 192 bytes on-chip static RAM retained in STOP/WAIT modes. |
| Bus Interface | Multiplexed 16-bit address/8-bit data bus; supports single-chip and expanded multiplexed operating modes. |
| Timer System | 16-bit programmable timer with four-stage prescaler; supports input capture (4 channels), output compare (5 channels), and real-time interrupt. |
| Serial Interfaces | SCI (NRZ, full-duplex, wakeup-capable); SPI (master/slave, programmable clock polarity/phase). |
| Power Management | STOP mode (CPU halted, clocks off, RAM retained); WAIT mode (CPU halted, selected clocks active, low-power wake-up). |
| Operating Voltage | 5.0 V ±10% (4.5 V to 5.5 V); specified for commercial temperature range (0°C to +70°C). |
| Package | 44-pin plastic quad flat pack (QFP), case 824A-01; lead-free compatible per Freescale documentation. |
Pinout & Package
MC68HC711D3CFN2 is housed in a 44-pin plastic quad flat pack (QFP), case 824A-01, with 0.8 mm lead pitch and 10 mm × 10 mm body size. Pin assignments conform to Figure 1-4 of Rev. 2.1 datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Primary 5 V power domain; VSS is digital ground reference for all I/O and core logic. |
| XTAL / EXTAL | Crystal oscillator inputs | Drive internal CMOS oscillator; supports crystal (1–4 MHz) or external clock source on EXTAL. |
| E | External clock output | Provides synchronized E-clock (½ bus frequency) for peripheral timing and bus arbitration. |
| RESET | Active-low reset input | Asynchronous reset initiating cold start; triggers Power-On Reset (POR) and COP timeout recovery. |
| IRQ / XIRQ/VPP | Interrupt request / non-maskable interrupt & programming voltage | IRQ is maskable level-sensitive interrupt; XIRQ serves as NMI and supplies VPP during OTPROM programming. |
| PA0–PA7 | Port A bidirectional I/O | 8-bit general-purpose port; PA0–PA3 support timer input capture/output compare functions. |
| PB0–PB7 | Port B bidirectional I/O | 8-bit general-purpose port with data direction register; no alternate peripheral functions assigned. |
| PC0–PC7 | Port C bidirectional I/O | 8-bit port with dedicated control register; PC0–PC3 support SPI signals (MISO, MOSI, SCK, SS). |
| PD0–PD7 | Port D bidirectional I/O | 8-bit port; PD6 doubles as Address Strobe (AS) in expanded mode; PD7 as Read/Write (R/W) control. |
| MODA/LIR, MODB/VSTBY | Mode select / low-voltage interrupt reset | Configure operating mode (single-chip/expanded/bootstrap); MODB enables VSTBY for low-power standby detection. |
Key Features
| Feature | Design Value |
|---|---|
| 4 KB OTPROM | Enables field-programmable firmware without external EPROM; eliminates need for UV-erasable devices or external memory. |
| 192-byte static RAM with standby retention | Preserves critical variables and stack state during STOP/WAIT modes - essential for battery-backed or low-power sensor nodes. |
| SCI with dual wakeup modes | Supports remote wake-up via idle-line or address-mark detection, reducing system-level power consumption in distributed networks. |
| 16-bit timer with 4-stage prescaler | Allows precise timing over wide range (µs to seconds); IC/OC flexibility supports motor control, PWM generation, and event logging. |
| COP watchdog with software-resettable timeout | Prevents runaway code execution; timeout period configurable via configuration register - critical for safety-critical industrial firmware. |
| Full-duplex SPI interface | Enables synchronous communication with ADCs, DACs, and display drivers at up to 2 MHz clock rate - simplifies sensor/data acquisition designs. |
Applications
| Industrial Motor Control | Automotive Body Controller |
|---|---|
|
Use Scenario: Closed-loop DC motor speed regulation using tachometer feedback and PWM output. IC Role / Device Role / Timing Role: MCU executes PID algorithm, generates PWM via OC1–OC5, captures tach pulses via IC1–IC4, and communicates status via SCI. Use Value: Integrated timer and SCI eliminate external counter/timer ICs and UARTs, reducing BOM count and PCB area. |
Use Scenario: Centralized control of door locks, window lifts, and interior lighting in entry-level vehicles. IC Role / Device Role / Timing Role: Manages discrete I/O states, debounces switches, drives relays via Port D, and logs fault events using RTI and RAM retention. Use Value: 192-byte RAM retention in STOP mode preserves lock state during ignition-off, enabling instant reactivation on key fob signal. |
| Legacy Instrumentation Front-End | Embedded Data Logger |
|
Use Scenario: Signal conditioning and serial telemetry transmission from analog sensors in lab equipment. IC Role / Device Role / Timing Role: Reads ADC via SPI, formats data packets, transmits via SCI to host PC, and maintains real-time timestamp using RTI. Use Value: On-chip SCI with wakeup capability allows host-initiated polling without continuous MCU activity - extends system battery life. |
Use Scenario: Standalone environmental monitoring node recording temperature/humidity at fixed intervals. IC Role / Device Role / Timing Role: Uses pulse accumulator for sensor interrupts, RTI for periodic sampling, and OTPROM for immutable firmware. Use Value: COP watchdog ensures reliable long-term unattended operation; STOP mode reduces average current to sub-10 µA. |
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); identical pinout, same 44-pin PLCC package; requires external programming during manufacturing. | Lacks field-programmability; suited for high-volume, fixed-function deployments where firmware never changes post-production. | Select MC68HC11D3CP only when OTP capability is unnecessary and ROM cost advantage justifies loss of field update flexibility. |
| MC68HC11E9CP | Enhanced version with 512-byte RAM, 512-byte EEPROM, and additional I/O; 56-pin PLCC package - not pin-compatible. | Supports data logging with nonvolatile storage; requires PCB redesign due to different pin count and layout. | Choose MC68HC11E9CP when EEPROM-based parameter storage or larger RAM is required, accepting board revision and toolchain updates. |
Compared with MC68HC11D3CP and MC68HC11E9CP, the MC68HC711D3CFN2 uniquely balances field-programmable firmware (via OTPROM), low-power STOP mode with full RAM retention, and QFP packaging - making it optimal for mid-volume industrial upgrades where layout reuse and firmware agility are both critical.
Availability
MC68HC711D3CFN2 is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, legacy instrumentation front-ends, and embedded data loggers requiring stable component supply across extended product lifecycles.
Supply support for MC68HC711D3CFN2 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) pioneered 8-bit microcontroller architectures for automotive and industrial markets, emphasizing robustness, longevity, and mixed-signal integration.
The MC68HC711D3CFN2 belongs to the HC11 family designed for deterministic real-time control in resource-constrained environments - targeting applications where reliability, low power, and peripheral integration outweigh raw processing throughput.
FAQ
What is the maximum operating frequency of the MC68HC711D3CFN2?
The MC68HC711D3CFN2 has a nominal bus speed of 3 MHz. Its fully static design permits operation from DC up to this frequency, with timing validated under 5.0 V ±10% supply and commercial temperature conditions (0°C to +70°C). The E-clock output runs at half the bus frequency, i.e., 1.5 MHz maximum.
Does the MC68HC711D3CFN2 support in-system programming?
No - the MC68HC711D3CFN2 contains one-time programmable read-only memory (OTPROM). Programming occurs once during manufacturing or initial setup using the XIRQ/VPP pin as a programming voltage source. Subsequent writes to the OTPROM are permanently disabled; firmware updates require replacement of the device.
What power-saving modes does the MC68HC711D3CFN2 offer?
The MC68HC711D3CFN2 supports two low-power modes: WAIT mode (CPU halted, clocks active for peripherals like SCI/SPI) and STOP mode (all clocks stopped except RTC-related circuits, with 192-byte RAM fully retained). Both modes are entered via SWI or STOP instruction and exited by interrupt or RESET.
Is the MC68HC711D3CFN2 pin-compatible with other HC11 variants?
The MC68HC711D3CFN2 in 44-pin QFP (case 824A-01) shares identical pin functions with the MC68HC11D3 in 44-pin PLCC (case 777-02) but differs mechanically - requiring PCB layout adaptation. It is not pin-compatible with 40-pin DIP or 56-pin variants like the MC68HC11E9CP due to differing pin counts and signal allocations.
What peripheral interfaces are integrated into the MC68HC711D3CFN2?
The MC68HC711D3CFN2 integrates a non-return-to-zero (NRZ) Serial Communications Interface (SCI), a full-duplex Serial Peripheral Interface (SPI), a 16-bit programmable timer system with input capture and output compare, an 8-bit pulse accumulator, Real-Time Interrupt (RTI), and a Computer Operating Properly (COP) watchdog - all accessible via memory-mapped registers.
MC68HC711D3CFN2 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:
MC68HC711D3CFN2 FAQ
1.How can I place an order for MC68HC711D3CFN2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC68HC711D3CFN2 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 MC68HC711D3CFN2 reliable?
The price and inventory of MC68HC711D3CFN2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC68HC711D3CFN2 is usually 5 days.
3.What payment methods are accepted for MC68HC711D3CFN2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC68HC711D3CFN2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC68HC711D3CFN2?
MC68HC711D3CFN2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC68HC711D3CFN2 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 MC68HC711D3CFN2?
For technical support, including MC68HC711D3CFN2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC68HC711D3CFN2 requirements.
6.How does Aetrix verify that MC68HC711D3CFN2 is sourced from the original manufacturer or authorized distributors?
All MC68HC711D3CFN2 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 MC68HC711D3CFN2 meets industry standards.
7.What is the process for return or replacement of MC68HC711D3CFN2?
All MC68HC711D3CFN2 units undergo pre-shipment inspection (PSI). If there is an issue with MC68HC711D3CFN2, 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 MC68HC711D3CFN2 part is unused and in its original packaging.
Return procedure for MC68HC711D3CFN2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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