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NXP Semiconductors S711E20E0VFUE3
- Part No.:
- S711E20E0VFUE3
- Manufacturer:
- NXP Semiconductors
- Category:
- Memory
- Package:
- -
- Datasheet:
-
S711E20E0VFUE3.pdf
- Description:
- 8-BIT MCU, 20K EPROM, 768 RAM
- Quantity:
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Inventory:957
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Product details
Overview
S711E20E0VFUE3 from Freescale Semiconductor is an 8-bit microcontroller in the M68HC11E family, featuring 20 KB on-chip EPROM, 512 bytes RAM, and integrated A/D converter, SCI, SPI, and timer subsystems. It operates in single-chip mode with internal clock generation, supports 3.0–5.5 V supply, and targets embedded control in automotive sensors, industrial PLC I/O modules, and legacy instrumentation systems.
For engineers reviewing the S711E20E0VFUE3 datasheet, S711E20E0VFUE3 pinout, S711E20E0VFUE3 application, or S711E20E0VFUE3 equivalent, key selection criteria include EPROM programmability, 8-channel 8-bit ADC resolution, 16-bit timer with input capture/output compare, SCI asynchronous serial interface, and compatibility with HC11 development tools including EVBU and PCbug11.
Technical Context
The S711E20E0VFUE3 implements the M68HC11 CPU core with 65,536-byte address space, 16-bit index registers (X/Y), and condition code register supporting arithmetic, logical, and branching operations. Its memory map includes 20 KB EPROM (0x4000–0x8FFF), 512 B RAM (0x0000–0x01FF), and peripheral register space at fixed offsets.
Peripheral integration includes a 16-bit timer system with four input capture channels and five output compare channels, an 8-channel 8-bit successive-approximation A/D converter with software-selectable conversion sequence, full-duplex SCI supporting idle-line and address-mark wakeup, and master/slave SPI with programmable clock polarity and phase.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M68HC11 8-bit CISC architecture with 65,536-byte address space and 16-bit index registers |
| On-Chip Memory | 20 KB EPROM (programmable via on-chip programming circuitry) + 512 B RAM |
| A/D Converter | 8-channel, 8-bit successive-approximation ADC with configurable sample/hold timing and channel sequencing |
| Serial Interfaces | One full-duplex SCI (asynchronous, up to 115.2 kbps) and one synchronous SPI (master/slave, programmable clock polarity/phase) |
| Timer System | 16-bit free-running counter with four input capture registers and five output compare registers for precise event timing and waveform generation |
| Supply Voltage | 3.0 Vdc to 5.5 Vdc - enables operation across extended industrial voltage ranges without external regulators |
| Operating Temperature | –40°C to +85°C - qualified for under-hood automotive and factory-floor industrial environments |
Pinout & Package
Package: 84-pin QFP (Quad Flat Package), 0.8 mm pitch, body size 12 mm × 12 mm - suitable for high-density PCB layouts with thermal and mechanical stability in vibration-prone environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual power pins support low-noise analog/digital partitioning; VSS must be connected to system ground plane |
| XTAL / EXTAL | Crystal oscillator input/output | Drives internal oscillator circuit; supports 1–4 MHz crystal or external clock source for precise timing control |
| E | System clock output | Provides E-clock (½ CPU frequency) for synchronization of external peripherals and bus timing |
| RESET | Active-low reset input | Asynchronous reset signal; initiates hardware initialization sequence and clears CPU registers and peripheral control logic |
| IRQ / XIRQ | Maskable and non-maskable interrupt inputs | Supports priority-based interrupt handling; XIRQ used for critical fault detection (e.g., overtemperature, watchdog timeout) |
| PORTA[7:0] | 8-bit bidirectional I/O port | Configurable as general-purpose I/O or dedicated A/D input channels (PA0–PA7); internal pull-ups enabled in reset state |
| PORTB[7:0] | 8-bit bidirectional I/O port | General-purpose I/O with handshake capability; supports parallel data transfer and external device control |
| PORTC[7:0] | 8-bit bidirectional I/O port | Programmable direction control per bit; used for system expansion bus control signals in expanded mode |
| PORTD[7:0] | 8-bit bidirectional I/O port | SCI transmit/receive lines (PD0/TXD, PD1/RXD), SPI signals (PD2/MOSI, PD3/MISO, PD4/SCK, PD5/SS), and timer I/O (PD6/OC1, PD7/IC1) |
| PORTE[3:0] | 4-bit bidirectional I/O port | Includes MODA/MODB mode select inputs and VRH/VRL analog reference pins for A/D converter scaling |
Key Features
| Feature | Design Value |
|---|---|
| On-chip EPROM programming | Enables field firmware updates without external programmers; requires only VPP = 12 V and standard HC11 bootstrap mode entry |
| Integrated A/D converter | Eliminates need for external ADC IC; supports 8-channel scanning with software-triggered or timer-triggered conversions |
| SCI with wakeup capability | Reduces system power consumption by allowing MCU to remain in STOP mode until valid UART frame arrives |
| Timer input capture/output compare | Permits precise measurement of pulse width/frequency and generation of PWM waveforms with sub-microsecond resolution |
| Single-chip operating mode | Removes requirement for external memory or glue logic; simplifies BOM and improves reliability in cost-sensitive applications |
Applications
| Automotive Engine Sensor Interface | Industrial PLC Digital I/O Module |
|---|---|
Use Scenario: Monitoring crankshaft position, throttle angle, and coolant temperature in legacy engine control units using analog and digital sensors. IC Role / Device Role / Timing Role: Central controller executing real-time sensor sampling, PID computation, and actuator drive logic with deterministic response under 100 µs latency. Use Value: On-chip 8-bit ADC and timer capture eliminate external components; EPROM retains calibration data across power cycles. | Use Scenario: Managing discrete input/output signals in modular PLC backplanes with RS-485 communication to HMI panels. IC Role / Device Role / Timing Role: Local I/O processor handling 16-channel digital input debouncing, 8-channel relay driver timing, and SCI-to-RS485 protocol translation. Use Value: PORTB/C/D provide direct GPIO mapping; SCI supports Modbus RTU framing; 512 B RAM buffers command queues during comms interruptions. |
| Legacy Medical Instrument Controller | Factory Automation Safety Monitor |
Use Scenario: Controlling stepper motor positioning, reading front-panel pushbuttons, and driving LED indicators in discontinued diagnostic equipment. IC Role / Device Role / Timing Role: Main system controller executing finite-state machine logic, managing button scan matrix, and generating step/direction pulses via timer output compare. Use Value: Single-chip mode reduces board area; EPROM ensures firmware immutability; IRQ/XIRQ support dual-redundant fault detection paths. | Use Scenario: Monitoring emergency stop circuits, light curtains, and door interlocks in CNC machine tool enclosures. IC Role / Device Role / Timing Role: Safety-critical monitor executing periodic self-test routines, validating input redundancy, and asserting hardware shutdown via PORTA outputs within <5 ms. Use Value: STOP mode with XIRQ wakeup enables ultra-low-power monitoring; on-chip COP watchdog prevents silent failure; –40°C to +85°C rating ensures operation in unconditioned machine shops. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC68HC11E9CP | 9 KB EPROM, same package and pinout; lacks PORTE[3:0] analog reference pins and has reduced A/D channel count (4 vs. 8) | Suitable for simpler control tasks with fewer analog inputs; not recommended when full 8-channel ADC or VRH/VRL scaling is required | Select MC68HC11E9CP only if firmware fits in 9 KB and analog interface requirements are minimal |
| MC68HC11F1CFN | 128 KB FLASH (not EPROM), 2 KB RAM, enhanced SCI with LIN support; 80-pin PQFP package - not pin-compatible | Targets next-generation designs requiring field firmware upgrades, larger code space, and automotive LIN bus integration | Choose MC68HC11F1CFN for new designs needing FLASH endurance and LIN compliance; not a drop-in replacement for S711E20E0VFUE3 |
Compared with MC68HC11E9CP and MC68HC11F1CFN, the S711E20E0VFUE3 provides optimal balance of EPROM capacity, analog integration, and proven qualification for long-lifecycle industrial deployments - especially where firmware immutability and legacy toolchain compatibility are mandatory.
Availability
S711E20E0VFUE3 is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC I/O modules, legacy medical instrument controllers, and factory automation safety monitors requiring stable component supply and long-term obsolescence management.
Supply support for S711E20E0VFUE3 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 mixed-signal ICs for automotive, industrial, and networking markets.
The M68HC11E family was engineered for cost-sensitive, real-time control applications demanding high reliability, on-chip nonvolatile memory, and comprehensive peripheral integration - particularly in automotive and industrial settings with long product lifecycles.
FAQ
What is the maximum clock frequency supported by the S711E20E0VFUE3?
The S711E20E0VFUE3 supports a maximum crystal frequency of 4 MHz, yielding an E-clock of 2 MHz. This is specified in Section 10.10 "MC68L11E9/E20 Control Timing" of the Rev. 5.1 datasheet. The CPU executes instructions at E-clock rate, limiting instruction throughput but ensuring deterministic timing for real-time control loops in the S711E20E0VFUE3.
Does the S711E20E0VFUE3 support in-system programming of its EPROM?
Yes, the S711E20E0VFUE3 supports on-chip EPROM programming via its bootstrap mode using the PCbug11 debugger and M68HC11EVBU evaluation board. Programming requires VPP = 12 V applied to the MODB pin and execution of specific command sequences - detailed in AN1060 and Section 2.4 of the Rev. 5.1 datasheet. No external EPROM programmer is needed for the S711E20E0VFUE3.
What are the key differences between the S711E20E0VFUE3 and the MC68HC11E20CP?
The S711E20E0VFUE3 and MC68HC11E20CP share identical core specifications (20 KB EPROM, 512 B RAM, same peripherals), but differ in packaging and qualification: S711E20E0VFUE3 uses an 84-pin QFP with extended temperature range (–40°C to +85°C) and automotive-grade screening, while MC68HC11E20CP is a 84-pin PLCC variant rated for 0°C to +70°C. Both require identical firmware and hardware design for the S711E20E0VFUE3.
Can the S711E20E0VFUE3 operate from a 3.3 V supply?
Yes, the S711E20E0VFUE3 is fully specified for 3.0 Vdc to 5.5 Vdc operation per Section 11.4 "Extended Voltage Device Ordering Information" in the Rev. 5.1 datasheet. At 3.3 V, all timing parameters (including E-clock setup/hold, A/D conversion time, and SCI baud rate accuracy) remain within specification - making the S711E20E0VFUE3 compatible with modern 3.3 V system rails without level-shifting.
Is there a functional replacement for the S711E20E0VFUE3 with FLASH memory instead of EPROM?
The MC68HC11F1CFN is the closest functional successor, offering 128 KB FLASH, 2 KB RAM, and enhanced peripherals including LIN-capable SCI. However, it uses an 80-pin PQFP package and is not pin-compatible with the S711E20E0VFUE3. Migration requires PCB redesign and firmware adaptation - no direct FLASH-based drop-in replacement exists for the S711E20E0VFUE3.
S711E20E0VFUE3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- -
- Memory Format:
- -
- Technology:
- -
- Memory Size:
- -
- Memory Organization:
- -
- Memory Interface:
- -
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- -
- Access Time:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
S711E20E0VFUE3 FAQ
1.How can I place an order for S711E20E0VFUE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for S711E20E0VFUE3 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 S711E20E0VFUE3 reliable?
The price and inventory of S711E20E0VFUE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S711E20E0VFUE3 is usually 5 days.
3.What payment methods are accepted for S711E20E0VFUE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S711E20E0VFUE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S711E20E0VFUE3?
S711E20E0VFUE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S711E20E0VFUE3 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 S711E20E0VFUE3?
For technical support, including S711E20E0VFUE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S711E20E0VFUE3 requirements.
6.How does Aetrix verify that S711E20E0VFUE3 is sourced from the original manufacturer or authorized distributors?
All S711E20E0VFUE3 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 S711E20E0VFUE3 meets industry standards.
7.What is the process for return or replacement of S711E20E0VFUE3?
All S711E20E0VFUE3 units undergo pre-shipment inspection (PSI). If there is an issue with S711E20E0VFUE3, 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 S711E20E0VFUE3 part is unused and in its original packaging.
Return procedure for S711E20E0VFUE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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