My Inquiry
My Account
NXP Semiconductors MCHC711KS2CFNE4
- Part No.:
- MCHC711KS2CFNE4
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 68-LCC (J-Lead)
- Datasheet:
-
MCHC711KS2CFNE4.pdf
- Description:
- IC MCU 8BIT 32KB OTP 68PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,723
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MCHC711KS2CFNE4 from NXP Semiconductors (formerly Freescale/Motorola) is an 8-bit HCMOS microcontroller unit (MCU) featuring 2 KB on-chip EPROM, 192 bytes RAM, and integrated peripherals including SCI, SPI, A/D converter, PWM, and timer subsystems. It operates at up to 3 MHz with single-chip mode execution and supports automotive and industrial control applications requiring non-volatile program storage and real-time I/O handling.
For engineers reviewing the MCHC711KS2CFNE4 datasheet, MCHC711KS2CFNE4 pinout, MCHC711KS2CFNE4 application, or MCHC711KS2CFNE4 equivalent, key selection criteria include EPROM retention capability, 68-pin PLCC package compatibility, 8-channel 8-bit A/D conversion, SCI/SCI-compatible serial interface timing, and COP watchdog functionality for safety-critical embedded systems.
Technical Context
The MCHC711KS2CFNE4 implements the M68HC11 CPU core with Harvard architecture, supporting indexed, extended, and inherent addressing modes. Its memory map includes 2 KB of OTP EPROM (M68HC711KS2 variant), 192 B RAM, and 512 B EEPROM configurable via CONFIG register.
Peripheral integration includes a 16-bit timer system with input capture/output compare, pulse accumulator, RTI, and 4-channel PWM; an 8-channel 8-bit successive-approximation A/D converter with multiplexer; and dual synchronous serial interfaces (SCI and SPI) with independent baud rate generation and interrupt-driven operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M68HC11 8-bit CISC core with 64-instruction set and 16-bit address bus |
| Program Memory | 2 KB on-chip EPROM (one-time programmable, factory-programmed or field-programmable via bootloader) |
| Data Memory | 192 bytes on-chip RAM + 512 bytes EEPROM with block protection and CONFIG register control |
| A/D Converter | 8-channel, 8-bit successive-approximation ADC with software-selectable reference and 25 µs conversion time |
| Serial Interfaces | SCI (asynchronous, full-duplex, programmable baud rate) and SPI (synchronous, master/slave, 4-wire) |
| Timer System | 16-bit timer with 4 input capture, 5 output compare channels, pulse accumulator, RTI, and 4-channel PWM |
| Operating Voltage | 5.0 V ±10% supply with AVDD/AVSS separate analog power pins for A/D noise isolation |
| Package | 68-pin Plastic Leaded Chip Carrier (PLCC), case 779, 25.4 mm × 25.4 mm body, 1.27 mm pitch |
Pinout & Package
68-pin PLCC (Case 779) with 25.4 mm × 25.4 mm body, 1.27 mm lead pitch, and ceramic base. Pin 1 marked by corner notch; leads arranged in four 17-pin sides (A–D). Thermal pad not present; mounting requires standard PLCC socket or reflow-compatible land pattern per JEDEC MS-026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Digital power supply and ground | Primary logic supply (5 V); VSS serves as digital reference return path for CPU and digital I/O |
| AVDD, AVSS | Analog power supply and ground | Isolated analog supply for A/D converter; mandatory separation from digital VDD/VSS to maintain 8-bit linearity |
| XTAL / EXTAL | Clock oscillator inputs | Crystal driver inputs supporting 1–4 MHz fundamental-mode crystals; EXTAL accepts external clock source |
| E | External clock output | Divided-by-2 E-clock signal used for external peripheral synchronization and timing verification |
| RESET | Active-low reset input | Asynchronous reset assertion clears CPU registers, disables peripherals, and forces boot vector fetch from $FFFE–$FFFF |
| IRQ / XIRQ | Maskable and non-maskable interrupt inputs | IRQ supports priority-based vectored interrupts; XIRQ triggers highest-priority non-maskable service routine |
| PORT A–H | Configurable parallel I/O ports | Port A: 8-bit bidirectional with internal pull-ups; Port B: 8-bit output-only; Ports C–H: mixed-direction with data direction registers |
| SCI TXD / RXD | Serial transmit/receive data | Full-duplex asynchronous communication pins supporting RS-232 level shifting via external drivers |
| SPI MOSI / MISO / SCK / SS | SPI bus signals | Master Out Slave In, Master In Slave Out, Serial Clock, and Slave Select - enable daisy-chain or multi-slave configurations |
Key Features
| Feature | Design Value |
|---|---|
| On-chip EPROM programming | Field-programmable via on-chip bootloader using SCI or internal memory copy; no external UV eraser required |
| EEPROM security | CONFIG register enables read/write protection for EEPROM blocks and disables unauthorized access to RAM contents |
| COP watchdog timer | Configurable timeout (0.5 ms to 1.0 s) with automatic reset on timeout; arm/disable controlled via dedicated register |
| A/D reference flexibility | Software-selectable reference source: internal bandgap (1.25 V), external VRH/VRL, or AVDD/AVSS |
| Low-power modes | Wait (CPU halted, peripherals active), Stop (all clocks stopped, wake on IRQ/XIRQ), and Slow (reduced E-clock frequency) modes |
| Memory expansion support | Four general-purpose chip selects with programmable address windows and timing controls for external ROM/RAM/peripherals |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Interface |
|---|---|
Use Scenario: Real-time monitoring of throttle position, coolant temperature, and crankshaft speed in 4-cylinder gasoline engine management. IC Role / Device Role / Timing Role: Primary MCU executing fuel injection timing, spark advance calculation, and closed-loop idle control using A/D inputs and PWM-controlled ignition coil drivers. Use Value: On-chip EPROM ensures firmware persistence across battery disconnects; COP watchdog prevents runaway code during voltage transients; 8-channel A/D supports simultaneous sensor sampling without external mux. | Use Scenario: Closed-loop speed and torque regulation of 3-phase AC induction motor using encoder feedback and analog current sensing. IC Role / Device Role / Timing Role: Central controller managing PWM gate drive timing, current loop sampling via A/D, and serial command interface to host PLC over SCI. Use Value: 4-channel PWM with independent period/duty registers enables precise phase-shifted outputs; SPI interface connects to external ADC or isolated gate driver ICs; RTI provides deterministic 1-ms task scheduling. |
| Medical Infusion Pump Controller | Building Automation Sensor Node |
Use Scenario: Dosing accuracy and safety monitoring in hospital-grade IV infusion pump with flow sensor, pressure transducer, and alarm buzzer. IC Role / Device Role / Timing Role: Safety-critical controller performing periodic self-test, fault detection, and motor step sequencing using timer output compare and port outputs. Use Value: EEPROM stores calibration constants and usage logs with write-protection; COP and XIRQ ensure fail-safe shutdown on hardware fault; dual serial interfaces allow local HMI (SCI) and network reporting (SPI-to-RS485). | Use Scenario: Distributed environmental monitoring node collecting temperature, humidity, CO₂, and occupancy data in HVAC zone control system. IC Role / Device Role / Timing Role: Edge intelligence node aggregating analog sensor data, applying linearization, and transmitting via SCI to central BACnet gateway. Use Value: 8-bit A/D with internal reference eliminates need for precision external references; low-power Wait/Stop modes extend battery life in wireless nodes; on-chip EPROM reduces BOM cost vs. external Flash + MCU. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC68HC11E9CP | Same M68HC11 core but with 512 B EEPROM (not EPROM), no onboard A/D, and 56-pin SDIP package | Lacks integrated A/D and EPROM; requires external ADC and program memory; suited for simpler control tasks with lower pin count | Select when A/D and non-volatile program storage are handled externally, and board space favors through-hole mounting |
| MC9RS08KA2CSC | RS08 core (enhanced 8-bit), 2 KB Flash, 128 B RAM, 12-channel 10-bit A/D, 20-pin SOIC | Higher-resolution A/D, Flash reprogrammability, smaller footprint, but lacks SPI and has reduced timer feature set | Select for cost-sensitive, space-constrained designs where Flash updateability and higher A/D resolution outweigh need for SPI or legacy M68HC11 instruction compatibility |
Compared with MC68HC11E9CP and MC9RS08KA2CSC, the MCHC711KS2CFNE4 uniquely combines EPROM-based firmware permanence, integrated 8-channel A/D, SPI+SCI dual serial support, and 68-pin PLCC mechanical robustness-making it optimal for legacy-replacement industrial controllers where field-programmable OTP and analog integration are mandatory.
Availability
MCHC711KS2CFNE4 is available at Aetrix Electronics and suitable for automotive engine control units, industrial motor drives, medical infusion pumps, and building automation sensor nodes requiring stable component supply and long-term obsolescence management.
Supply support for MCHC711KS2CFNE4 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
NXP Semiconductors is a global semiconductor company formed from the spin-off of Freescale Semiconductor and the semiconductor division of Philips, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.
The M68HC11 family was originally developed by Motorola for cost-sensitive, real-time embedded control applications demanding high reliability, on-chip non-volatile memory, and integrated analog/mixed-signal peripherals in harsh environments.
FAQ
What is the maximum operating frequency of the MCHC711KS2CFNE4?
The MCHC711KS2CFNE4 operates with a maximum E-clock frequency of 3 MHz, derived from an external crystal (1–4 MHz) or oscillator connected to XTAL/EXTAL pins. The internal CPU executes instructions at half the E-clock rate, resulting in a peak instruction throughput of 1.5 million instructions per second (MIPS) under optimal conditions.
Does the MCHC711KS2CFNE4 support in-system programming of its EPROM?
No, the MCHC711KS2CFNE4 does not support in-system programming of its 2 KB EPROM. Programming requires either a dedicated EPROM programmer (e.g., BP Microsystems Series) or use of the on-chip bootloader via SCI interface with preloaded firmware image - both performed before soldering. Once programmed, the EPROM is one-time programmable and cannot be erased electrically.
How is the A/D converter on the MCHC711KS2CFNE4 configured for external voltage reference?
The MCHC711KS2CFNE4 A/D converter uses VRH and VRL pins to accept an external differential reference. Configuration requires setting bit 7 (REFS) in the A/D Control/Status Register to '1', selecting external reference mode. VRH must be ≤ AVDD and ≥ VRL; typical use pairs VRH to a precision 2.5 V reference and VRL to AGND, enabling full-scale 0–2.5 V measurement range with 8-bit resolution.
Can the MCHC711KS2CFNE4 operate in low-power modes while maintaining A/D conversion capability?
Yes, the MCHC711KS2CFNE4 supports A/D conversions in Wait mode (CPU halted, peripherals active) and normal run mode. However, A/D operation is disabled in Stop mode (all clocks halted) and Slow mode (E-clock reduced), as the A/D converter requires the main system clock for sampling and conversion timing. Wake-from-Wait transitions preserve A/D configuration and result registers.
What packaging options are available for the MCHC711KS2CFNE4 besides the 68-pin PLCC?
The MCHC711KS2CFNE4 is specifically designated for the 68-pin Plastic Leaded Chip Carrier (PLCC, Case 779). Other members of the M68HC11KS family offer alternate packages (e.g., 84-pin PLCC for M68HC711K4), but the KS2 variant with EPROM and this exact part number is only manufactured in the 68-pin PLCC configuration per Freescale's original ordering information and mechanical data documentation.
MCHC711KS2CFNE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 68-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:
- 51
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- OTP
- EEPROM Size:
- 640 x 8
- RAM Size:
- 1K 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:
MCHC711KS2CFNE4 FAQ
1.How can I place an order for MCHC711KS2CFNE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for MCHC711KS2CFNE4 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 MCHC711KS2CFNE4 reliable?
The price and inventory of MCHC711KS2CFNE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCHC711KS2CFNE4 is usually 5 days.
3.What payment methods are accepted for MCHC711KS2CFNE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCHC711KS2CFNE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCHC711KS2CFNE4?
MCHC711KS2CFNE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCHC711KS2CFNE4 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 MCHC711KS2CFNE4?
For technical support, including MCHC711KS2CFNE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCHC711KS2CFNE4 requirements.
6.How does Aetrix verify that MCHC711KS2CFNE4 is sourced from the original manufacturer or authorized distributors?
All MCHC711KS2CFNE4 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 MCHC711KS2CFNE4 meets industry standards.
7.What is the process for return or replacement of MCHC711KS2CFNE4?
All MCHC711KS2CFNE4 units undergo pre-shipment inspection (PSI). If there is an issue with MCHC711KS2CFNE4, 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 MCHC711KS2CFNE4 part is unused and in its original packaging.
Return procedure for MCHC711KS2CFNE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MCHC711KS2CFNE4 Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
