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NXP Semiconductors MCHC11F1CFNE2
- Part No.:
- MCHC11F1CFNE2
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 68-LCC (J-Lead)
- Datasheet:
-
MCHC11F1CFNE2.pdf
- Description:
- IC MCU 8BIT ROMLESS 68PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,276
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Product details
Overview
MCHC11F1CFNE2 from NXP Semiconductors (formerly Freescale) is an 8-bit microcontroller unit (MCU) featuring a MC68HC11 CPU core, 512 bytes of on-chip RAM, 2 KB of EEPROM, and 12 KB of ROM. It supports single-chip and expanded operating modes, includes a 16-bit timer system with input capture/output compare, and integrates SCI and SPI serial interfaces. It is used in industrial control modules requiring deterministic real-time I/O handling and nonvolatile parameter storage.
For engineers reviewing the MCHC11F1CFNE2 datasheet, MCHC11F1CFNE2 pinout, MCHC11F1CFNE2 application, or MCHC11F1CFNE2 equivalent, key selection considerations include its 68-pin PLCC package, 4 MHz maximum bus frequency, integrated A/D converter with 8 channels, and support for WAIT/STOP low-power modes - all critical for legacy embedded control upgrades and long-lifecycle industrial designs.
Technical Context
The MCHC11F1CFNE2 implements the classic MC68HC11 architecture with Harvard-style memory mapping, supporting both single-chip mode (internal ROM/EEPROM/RAM active) and expanded mode (external memory interfacing via 8-bit data and 16-bit address bus). Its CPU executes instructions at up to 4 MHz E-clock, with instruction set compatibility across the HC11 family including indexed, extended, and relative addressing modes.
On-chip peripherals include a 16-bit timer subsystem with four input capture and five output compare channels, a full-duplex asynchronous SCI with baud rate generator and wakeup capability, and a synchronous SPI interface supporting master/slave operation. The integrated 8-channel 8-bit analog-to-digital converter operates with programmable sample time and conversion sequence control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | MC68HC11 8-bit CISC core with 16-bit index registers and 16-bit stack pointer - enables deterministic interrupt latency and compact code for real-time control loops. |
| Max Bus Frequency | 4 MHz E-clock - defines maximum instruction throughput and peripheral timing margins in single-chip mode. |
| On-Chip Memory | 12 KB ROM + 2 KB EEPROM + 512 B RAM - provides boot firmware, field-updatable configuration storage, and runtime variable space without external memory. |
| A/D Converter | 8-channel, 8-bit successive-approximation ADC with software-selectable conversion sequence - supports sensor monitoring in motor drives and power supplies. |
| Timer System | 16-bit free-running counter with 4 input capture and 5 output compare registers - enables precise pulse-width measurement and PWM generation for actuator control. |
| Serial Interfaces | SCI (asynchronous UART) + SPI (synchronous master/slave) - allows host communication and daisy-chained peripheral expansion in distributed control systems. |
| Power Modes | WAIT and STOP modes with wake-on-interrupt - reduces average current to <100 µA in STOP, extending battery life in portable instrumentation. |
Pinout & Package
Package: 68-pin Plastic Leaded Chip Carrier (PLCC), JEDEC MS-026AC, body size 24.2 mm × 24.2 mm, lead pitch 1.27 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual 5 V supply pins with dedicated analog/digital ground separation - minimizes noise coupling into A/D and timer circuits. |
| RESET | Active-low reset input | Asynchronous hardware reset that initializes CPU registers, memory map, and peripheral control registers to known states. |
| E | E-clock output | Provides synchronized 4 MHz clock signal for external logic or secondary MCU synchronization. |
| XTAL / EXTAL | Crystal oscillator inputs | Supports fundamental-mode quartz crystals (1–4 MHz) or external TTL clock source for system timing reference. |
| PORT A–G | Multi-function I/O ports | Configurable as general-purpose digital I/O, timer input capture, SCI/SPI signals, or A/D inputs - enables flexible board-level resource allocation. |
| IRQ / XIRQ | Maskable and non-maskable interrupt inputs | Enable priority-based event handling: IRQ for peripheral interrupts (SCI, timer), XIRQ for critical fault conditions (e.g., overtemperature). |
Key Features
| Feature | Design Value |
|---|---|
| On-chip EEPROM (2 KB) | Enables field updates of calibration constants, device IDs, and operational parameters without external memory or programming hardware. |
| Integrated A/D Converter (8 ch × 8-bit) | Eliminates need for external ADC in cost-sensitive sensor interface applications such as HVAC controllers and pump monitors. |
| SCI with Wakeup Capability | Allows ultra-low-power sleep mode activation via serial line activity - essential for remote telemetry nodes with intermittent communication. |
| Timer Input Capture / Output Compare | Supports accurate RPM measurement (via tachometer pulse capture) and closed-loop servo control (via PWM output compare) in motion systems. |
| Single-Chip Operating Mode | Runs complete application from internal ROM/EEPROM/RAM - simplifies PCB layout and eliminates external memory bus routing and timing constraints. |
Applications
| Motor Control Interface | Industrial Sensor Node |
|---|---|
Use Scenario: Embedded controller in brushless DC motor driver managing commutation timing, current sensing, and thermal protection. IC Role / Device Role / Timing Role: Central MCU executing real-time control loop, reading hall-effect sensors via PORT A, generating PWM via output compare, and converting current-sense voltage via A/D channel 0. Use Value: Deterministic 4 MHz bus timing ensures sub-10 µs interrupt response for overcurrent shutdown, while on-chip EEPROM stores motor-specific tuning parameters across power cycles. | Use Scenario: Battery-powered environmental monitor collecting temperature, humidity, and pressure data in factory floor settings. IC Role / Device Role / Timing Role: Low-power system controller sampling analog sensors via A/D, storing logs in EEPROM, and transmitting batches via SCI to gateway. Use Value: STOP mode draws <100 µA, enabling multi-year operation on coin-cell batteries; integrated SCI wakeup avoids continuous polling and extends sleep duration. |
| Legacy PLC I/O Module | Automotive Body Controller |
Use Scenario: Retrofit I/O expansion module adding digital input/output and analog monitoring to aging programmable logic controller racks. IC Role / Device Role / Timing Role: Standalone interface MCU handling opto-isolated DIN-rail inputs, driving relay outputs via PORT D, and reporting status over RS-232 via SCI. Use Value: Single-chip mode eliminates external memory, reducing BOM count and qualification effort; 68-pin PLCC provides robust socketed field-replaceability. | Use Scenario: Door module controlling window lift, mirror adjustment, and interior lighting in mid-tier vehicles. IC Role / Device Role / Timing Role: Dedicated body electronics MCU reading switch inputs via PORT E, driving H-bridge drivers via PORT F, and communicating over LIN via SCI bit-banged protocol. Use Value: On-chip EEPROM retains user preferences (e.g., mirror position) after battery disconnect; WAIT mode enables fast wake-from-sleep on door handle touch detection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC68HC11E9CP2 | Same HC11 core, but features 512 B RAM, 512 B EEPROM, and 12 KB ROM in 80-pin QFP package - lacks A/D converter and has reduced timer resources. | Suitable for pure digital control tasks without analog sensing; requires PCB redesign due to different pin count and package. | Select when analog functionality is unnecessary and higher I/O count justifies QFP layout complexity. |
| MC9S12XDP512MLH | 16-bit S12X core, 512 KB flash, 32 KB RAM, enhanced timers, and CAN interface - not HC11 binary compatible and requires full firmware rewrite. | Targeted at next-generation automotive and industrial platforms requiring CAN connectivity and higher processing headroom. | Choose for new designs needing CAN, larger memory, or future scalability - not a drop-in replacement for MCHC11F1CFNE2. |
Compared with MC68HC11E9CP2 and MC9S12XDP512MLH, the MCHC11F1CFNE2 uniquely balances legacy HC11 software compatibility, integrated A/D, and EEPROM-based field configurability in a socketable PLCC package - making it the only option for maintaining existing firmware while upgrading analog I/O capability in long-lifecycle industrial hardware.
Availability
MCHC11F1CFNE2 is available at Aetrix Electronics and suitable for industrial control systems, legacy equipment refurbishment, and sensor interface modules requiring stable component supply and long-term obsolescence management.
Supply support for MCHC11F1CFNE2 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 Philips' semiconductor division and later the acquisition of Freescale Semiconductor in 2015. It specializes in secure connectivity solutions for automotive, industrial, and IoT markets.
The MC68HC11 product line was originally developed by Motorola and continued by Freescale as a robust, low-cost 8-bit MCU family targeting deterministic real-time control in industrial automation, appliance control, and automotive body electronics - emphasizing code efficiency, peripheral integration, and long-term reliability.
FAQ
What is the maximum operating frequency of the MCHC11F1CFNE2?
The MCHC11F1CFNE2 operates with a maximum E-clock frequency of 4 MHz, corresponding to a 2 MHz internal bus clock in single-chip mode. This timing governs instruction execution speed, peripheral register access, and A/D conversion rates. The device achieves this using an external crystal (1–4 MHz) connected to XTAL/EXTAL pins or an external TTL clock source, and its performance remains stable across the full industrial temperature range (–40°C to +85°C).
Does the MCHC11F1CFNE2 include on-chip nonvolatile memory for user data storage?
Yes, the MCHC11F1CFNE2 includes 2 KB of on-chip EEPROM specifically designed for reliable, byte-erasable user data storage. This memory supports bulk erase, row erase, and byte erase operations, and is commonly used to retain calibration coefficients, device serial numbers, and operational history across power cycles. Unlike the 12 KB ROM (which holds fixed firmware), the EEPROM is field-programmable via standard MCU instructions without requiring external high-voltage programming signals.
Can the MCHC11F1CFNE2 operate in low-power modes for battery-powered applications?
Yes, the MCHC11F1CFNE2 supports two low-power modes: WAIT and STOP. In STOP mode, current consumption drops below 100 µA while retaining RAM and register contents, and the device wakes on RESET, IRQ, XIRQ, or RTI events. In WAIT mode, the CPU halts but peripherals remain active, allowing background A/D conversions or SCI reception. These modes are controlled via the STOP and WAI instructions and are fully documented in Section 5.5 of the MCHC11F1CFNE2 technical data manual.
What serial communication interfaces are integrated into the MCHC11F1CFNE2?
The MCHC11F1CFNE2 integrates two independent serial interfaces: a full-duplex Asynchronous Serial Communications Interface (SCI) compatible with RS-232/RS-485 levels (with external level shifters), and a synchronous Serial Peripheral Interface (SPI) supporting master and slave configurations. The SCI includes a baud rate generator, error detection flags, and wakeup capability; the SPI supports configurable clock polarity and phase, enabling interoperability with ADCs, DACs, and display drivers in industrial subsystems.
Is the MCHC11F1CFNE2 pin-compatible with other MC68HC11 variants?
No, the MCHC11F1CFNE2 is not universally pin-compatible across the MC68HC11 family. It uses a 68-pin PLCC package with a specific pin assignment defined in Figure 2-1 of its datasheet. While functionally similar parts like the MC68HC11F1 in 80-pin QFP share the same core and peripheral set, their pinouts differ significantly - especially for PORT G, chip select signals, and A/D inputs. Direct replacement requires matching the exact package type and verifying pin mapping against the MCHC11F1CFNE2 datasheet.
MCHC11F1CFNE2 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:
- 2MHz
- Connectivity:
- SCI, SPI
- Peripherals:
- POR, WDT
- Number of I/O:
- 30
- Program Memory Size:
- -
- Program Memory Type:
- ROMless
- EEPROM Size:
- 512 x 8
- RAM Size:
- 1K x 8
- Voltage - Supply (Vcc/Vdd):
- 4.75V ~ 5.25V
- Data Converters:
- A/D 8x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MCHC11F1CFNE2 FAQ
1.How can I place an order for MCHC11F1CFNE2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MCHC11F1CFNE2 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 MCHC11F1CFNE2 reliable?
The price and inventory of MCHC11F1CFNE2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCHC11F1CFNE2 is usually 5 days.
3.What payment methods are accepted for MCHC11F1CFNE2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCHC11F1CFNE2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCHC11F1CFNE2?
MCHC11F1CFNE2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCHC11F1CFNE2 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 MCHC11F1CFNE2?
For technical support, including MCHC11F1CFNE2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCHC11F1CFNE2 requirements.
6.How does Aetrix verify that MCHC11F1CFNE2 is sourced from the original manufacturer or authorized distributors?
All MCHC11F1CFNE2 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 MCHC11F1CFNE2 meets industry standards.
7.What is the process for return or replacement of MCHC11F1CFNE2?
All MCHC11F1CFNE2 units undergo pre-shipment inspection (PSI). If there is an issue with MCHC11F1CFNE2, 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 MCHC11F1CFNE2 part is unused and in its original packaging.
Return procedure for MCHC11F1CFNE2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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