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NXP Semiconductors MC68S711E9CFN2
- Part No.:
- MC68S711E9CFN2
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
MC68S711E9CFN2.pdf
- Description:
- IC MCU 8BIT 12KB OTP 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,877
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Product details
Overview
MC68S711E9CFN2 from Motorola is an 8-bit HCMOS microcontroller unit (MCU) featuring 512 bytes of on-chip EEPROM, 256 bytes of RAM, a 10-bit A/D converter with 8 input channels, two 16-bit timer modules, and dual serial interfaces (SCI and SPI). It operates at up to 3 MHz in single-chip mode and supports bootstrap programming for field firmware updates - used in industrial motor control and embedded sensor interface applications.
For engineers reviewing the MC68S711E9CFN2 datasheet, MC68S711E9CFN2 pinout, MC68S711E9CFN2 application, or MC68S711E9CFN2 equivalent, key selection considerations include its OTP/EPROM-programmable flash-like memory architecture, COP watchdog reliability, E-clock timing synchronization, and compatibility with legacy M68HC11 development tools including EVBU and PCbug11.
Technical Context
The MC68S711E9CFN2 implements the M68HC11 CPU core with full instruction set compatibility, supporting single-chip, expanded, bootstrap, and test operating modes. Its memory subsystem includes 512-byte EEPROM with block protection, 256-byte RAM, and 2 KB of internal ROM containing monitor firmware.
Peripheral integration includes a 10-bit successive-approximation A/D converter with programmable conversion sequence, two independent 16-bit timer systems (input capture/output compare), SCI with wakeup capability, and SPI master/slave operation - all controlled via dedicated register sets mapped into the MCU's I/O space.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M68HC11 8-bit CISC architecture, fully compatible with HC11 instruction set and addressing modes |
| Max Clock Frequency | 3 MHz E-clock - defines maximum instruction execution rate and peripheral timing margins |
| On-Chip Memory | 512 bytes EEPROM (user-programmable, nonvolatile), 256 bytes RAM, 2 KB ROM (monitor firmware) |
| A/D Converter | 10-bit resolution, 8-channel multiplexed input, software- or timer-triggered conversion |
| Serial Interfaces | SCI (asynchronous UART) + SPI (synchronous master/slave), both with dedicated status/control registers |
| Timer System | Dual 16-bit timers with input capture, output compare, pulse accumulation, and real-time interrupt (RTI) capability |
| Operating Voltage | 4.5 V to 5.5 V - ensures compatibility with standard TTL/CMOS logic levels and industrial power rails |
Pinout & Package
MC68S711E9CFN2 is housed in a 52-pin Plastic-Leaded Chip Carrier (PLCC) package (Case 778), with lead pitch of 0.05 inches and body size 19.05 mm × 19.05 mm. Pin assignments follow the standard M68HC11E9 PLCC layout defined in Section 2.1 of the Rev. 3.2 Technical Data document.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Primary 5 V DC supply and return; decoupling required within 1 cm for stable operation |
| XTAL / EXTAL | Crystal oscillator input/output | Supports parallel-resonant crystal (1–4 MHz) or external clock source for system timing reference |
| E | System clock output | Provides buffered E-clock signal (½ oscillator frequency) for synchronizing external peripherals |
| RESET | Active-low reset input | Asynchronous hardware reset; initiates CPU restart and memory map initialization |
| IRQ / XIRQ | Maskable and non-maskable interrupt inputs | Enable prioritized event handling; XIRQ bypasses I-bit masking for critical fault conditions |
| PORT A–E | Programmable bidirectional I/O ports | Port A: 8-bit general-purpose I/O; Port B: 8-bit with alternate timer/serial functions; Ports C–E: mixed digital I/O and analog input (A/D) |
Key Features
| Feature | Design Value |
|---|---|
| Bootstrap Programming Mode | Enables in-system firmware loading via SCI without external programmer - reduces production test complexity |
| EEPROM Security Protection | Configurable block-level write protection prevents unauthorized firmware overwrite or reverse engineering |
| COP Watchdog Timer | Independent clocked watchdog with timeout configurable via OPTION register - recovers from software lockup |
| Low-Power Wait/Stop Modes | Reduces current draw to <100 µA in Stop mode - extends battery life in portable sensor nodes |
| Integrated A/D with Auto-Scan | Hardware-controlled sequential conversion across up to 8 channels eliminates CPU polling overhead |
Applications
| Industrial Motor Control | Automotive Body Electronics |
|---|---|
Use Scenario: Closed-loop speed regulation of brushed DC motors in HVAC actuators and valve positioners. IC Role / Device Role / Timing Role: MCU executes PID algorithm, reads quadrature encoder feedback via timer input capture, and drives PWM outputs through PORT B. Use Value: On-chip 16-bit timers enable precise edge-aligned PWM generation and high-resolution position measurement without external ICs. | Use Scenario: Central body controller managing door locks, window lifts, and interior lighting in entry-level vehicles. IC Role / Device Role / Timing Role: MCU acts as LIN slave node, receives commands via SCI, and controls relays/LEDs using PORT A and PORT D GPIOs. Use Value: Integrated SCI with wakeup-on-break supports low-power sleep until command reception - meets automotive standby current requirements. |
| Embedded Sensor Interface | Legacy Industrial Equipment Retrofit |
Use Scenario: Analog sensor aggregation (temperature, pressure, humidity) in factory floor monitoring nodes. IC Role / Device Role / Timing Role: MCU performs periodic A/D conversions, stores calibrated data in EEPROM, and transmits via SPI to host PLC. Use Value: 10-bit A/D with internal voltage reference and 8-channel mux enables direct connection of multiple sensors without external multiplexers. | Use Scenario: Replacement controller for aging PLC I/O modules requiring drop-in compatibility with existing ladder logic firmware. IC Role / Device Role / Timing Role: MCU emulates original HC11-based control logic, retains identical memory map and interrupt vector table layout. Use Value: Binary-compatible instruction set and identical pinout allow reuse of legacy PCBs and firmware binaries with minimal revalidation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC68HC11E9CP2 | Same core and peripherals, but in 52-pin ceramic-leaded chip carrier (CLCC); higher temperature rating (–40°C to +125°C) | Suitable for under-hood automotive or high-reliability industrial environments where extended thermal range is required | Select MC68HC11E9CP2 only when operating ambient exceeds 85°C or hermetic packaging is mandated |
| MC68HC11E20CFN2 | Enhanced variant with 20 KB EPROM (vs. 2 KB ROM + 512B EEPROM), no on-chip EEPROM, same PLCC-52 package | Better suited for fixed-function applications requiring larger program storage but no field-upgradable nonvolatile data storage | Choose MC68HC11E20CFN2 when firmware size exceeds 2 KB and EEPROM data logging is unnecessary |
Compared with MC68HC11E9CP2 and MC68HC11E20CFN2, the MC68S711E9CFN2 uniquely balances field-programmable EEPROM capacity, industrial-grade plastic packaging, and full bootstrap capability - making it optimal for cost-sensitive, upgradeable embedded controllers where firmware revision control and moderate nonvolatile data retention are essential.
Availability
MC68S711E9CFN2 is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, and embedded sensor interface applications requiring stable component supply and long-term lifecycle support.
Supply support for MC68S711E9CFN2 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
Motorola Semiconductor (now part of NXP Semiconductors) pioneered the 68HC11 family as a robust, low-cost 8-bit MCU platform for industrial and automotive embedded systems.
The MC68S711E9CFN2 belongs to the M68HC11E family, designed specifically for applications demanding reliable real-time control, integrated analog sensing, and field-upgradable firmware in harsh electrical environments.
FAQ
What is the maximum operating frequency of the MC68S711E9CFN2?
The MC68S711E9CFN2 supports a maximum E-clock frequency of 3 MHz, derived from an external crystal or oscillator connected to XTAL/EXTAL pins. This corresponds to a 6 MHz oscillator input (since E-clock = ½ oscillator frequency), enabling deterministic instruction timing and peripheral synchronization within industrial control loops.
Does the MC68S711E9CFN2 include on-chip EEPROM, and how is it protected?
Yes, the MC68S711E9CFN2 integrates 512 bytes of on-chip EEPROM. Protection is implemented via the Block Protect Register (BPROT), allowing selective write-protection of EEPROM blocks to prevent accidental or malicious firmware corruption - a key feature for secure field updates.
Can the MC68S711E9CFN2 be programmed in-circuit without a dedicated programmer?
Yes, the MC68S711E9CFN2 supports bootstrap programming mode, enabling firmware download and EEPROM programming directly through its SCI interface using standard UART signals - eliminating need for external EPROM programmers in production or service environments.
What are the power supply requirements for reliable operation of the MC68S711E9CFN2?
The MC68S711E9CFN2 requires a regulated 4.5 V to 5.5 V DC supply on VDD, with VSS grounded. Decoupling capacitors (0.1 µF ceramic + 10 µF tantalum) must be placed within 1 cm of the VDD/VSS pins to suppress switching noise and ensure stable reset behavior and A/D accuracy.
Is the MC68S711E9CFN2 pin-compatible with other M68HC11E family members in the same PLCC-52 package?
Yes, the MC68S711E9CFN2 shares identical pinout and electrical characteristics with other M68HC11E9 variants in the 52-pin PLCC package (e.g., MC68HC11E9CP2, MC68HC11E9CFN1), enabling direct substitution where EEPROM capacity and plastic packaging meet design requirements.
MC68S711E9CFN2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 52-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:
- 38
- Program Memory Size:
- 12KB (12K x 8)
- Program Memory Type:
- OTP
- EEPROM Size:
- 512 x 8
- RAM Size:
- 512 x 8
- Voltage - Supply (Vcc/Vdd):
- 4.5V ~ 5.5V
- Data Converters:
- A/D 8x8b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC68S711E9CFN2 FAQ
1.How can I place an order for MC68S711E9CFN2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC68S711E9CFN2 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 MC68S711E9CFN2 reliable?
The price and inventory of MC68S711E9CFN2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC68S711E9CFN2 is usually 5 days.
3.What payment methods are accepted for MC68S711E9CFN2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC68S711E9CFN2 transactions.
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4.How is shipping managed for MC68S711E9CFN2?
MC68S711E9CFN2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC68S711E9CFN2 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 MC68S711E9CFN2?
For technical support, including MC68S711E9CFN2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC68S711E9CFN2 requirements.
6.How does Aetrix verify that MC68S711E9CFN2 is sourced from the original manufacturer or authorized distributors?
All MC68S711E9CFN2 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 MC68S711E9CFN2 meets industry standards.
7.What is the process for return or replacement of MC68S711E9CFN2?
All MC68S711E9CFN2 units undergo pre-shipment inspection (PSI). If there is an issue with MC68S711E9CFN2, 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 MC68S711E9CFN2 part is unused and in its original packaging.
Return procedure for MC68S711E9CFN2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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