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NXP Semiconductors MCF51AC128CCFUER
- Part No.:
- MCF51AC128CCFUER
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 64-QFP
- Datasheet:
-
MCF51AC128CCFUER.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 64QFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,396
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Product details
Overview
MCF51AC128CCFUER from NXP Semiconductors (formerly Freescale) is a 32-bit ColdFire V1 microcontroller designed for automotive and industrial control applications requiring CAN bus connectivity, real-time analog monitoring, and deterministic timing. It integrates 128 KB flash, 16 KB SRAM, a 12-bit 20-channel ADC, dual FTM modules, CAN 2.0A/B controller, and operates at up to 50.33 MHz across –40°C to 105°C.
For engineers reviewing the MCF51AC128CCFUER datasheet, MCF51AC128CCFUER pinout, MCF51AC128CCFUER application, or MCF51AC128CCFUER equivalent, this page delivers verified specifications, package mapping, functional alternatives, and design-critical timing and interface details directly traceable to Freescale Document MCF51AC256 Rev.7.
Technical Context
The MCF51AC128CCFUER implements the ColdFire V1 core with background debug module (BDM), supporting ISA_C instruction set and delivering 0.76 DMIPS/MHz when executing from flash. Its system integration includes a multipurpose clock generator (MCG) with FLL/PLL, low-power oscillator (LPO), and configurable stop/wait modes for energy-sensitive embedded systems.
It features two flexible timer modules (FTM1 and FTM2) supporting input capture, output compare, edge- and center-aligned PWM with deadtime insertion, plus hardware-triggered ADC conversions. The integrated MSCAN module supports programmable bit rates up to 1 Mbps, five receive buffers with FIFO, and bus-off recovery - all compliant with ISO 11898-1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | ColdFire V1 32-bit RISC CPU, ISA_C compliant, executes from flash or SRAM |
| Max Core Frequency | 50.33 MHz at 2.7–5.5 V supply - enables real-time control loop execution within sub-μs latency |
| Flash / SRAM | 128 KB flash (read/program/erase over full temp/voltage range), 16 KB SRAM - sufficient for CAN firmware stacks and sensor fusion logic |
| ADC | 12-bit resolution, 20-channel input mux, asynchronous clock support - reduces noise in motor current sensing applications |
| CAN Interface | MSCAN module compliant with CAN 2.0A/B, 1 Mbps max bit rate, 5 RX + 3 TX buffers - supports automotive body control networks |
| Timers | FTM1 (6-channel) and FTM2 (2-channel) with PWM, input capture, fault protection, and ADC trigger capability - suitable for BLDC motor commutation |
| Operating Temperature | –40°C to +105°C ambient - qualified for under-hood automotive and industrial power electronics environments |
Pinout & Package
Package: 64-pin LQFP (10 mm × 10 mm), RoHS-compliant, lead-free (E suffix). Pinout validated per Figure 3 (64-Pin LQFP) in MCF51AC256 Rev.7 datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PTA0 / TxCAN | CAN Transmit Output | Drives differential CANH/CANL via external transceiver; not available on non-CAN variants |
| PTA1 / RxCAN | CAN Receive Input | Accepts differential CANH/CANL signal; internal comparator thresholds match ISO 11898-2 |
| BKGD / MS | Single-Wire Background Debug | Enables BDM programming and real-time debugging using one dedicated pin |
| RESET | Active-Low Reset Input | Asynchronous reset with internal pull-up; triggers cold start and COP timeout recovery |
| VDD / VSS | Power Supply / Ground | Dual 3.3 V or 5 V supply domains: VDD (digital), VDDA/VSSA (analog) - requires separate filtering |
| PTD0 / ACMP1+ | Analog Comparator Input (+) | High-impedance rail-to-rail input for voltage threshold detection (e.g., battery undervoltage) |
| PTF0 / RGPIO8 / FTM1CH2 | Rapid GPIO / Timer Channel | Direct CPU-bus-connected I/O with set/clear/toggle registers; usable as PWM output or capture input |
Key Features
| Feature | Design Value |
|---|---|
| On-chip Security Circuitry | Prevents unauthorized read-out of flash/SRAM contents - essential for firmware IP protection in OEM deployments |
| Hardware CRC Generator | 16-bit CRC-CCITT (x¹⁶+x¹²+x⁵+1) engine accelerates message integrity checks for CAN and SPI protocols |
| Low-Power Stop Modes | Three stop modes with selective peripheral clock gating - enables <10 μA deep-sleep current while retaining RAM and RTC state |
| Flexible Clock Generation | MCG supports crystal (1–16 MHz), internal reference, or external clock inputs; PLL/FLL allows precise frequency synthesis for CAN bit timing |
| Real-Time Debug Support | 6 hardware breakpoints, on-chip trace buffer, and debug visibility bus (VBUS) enable non-intrusive runtime analysis |
Applications
| Automotive Body Control Module | Industrial Motor Drive Controller |
|---|---|
Use Scenario: Centralized control of door locks, window lifts, lighting, and HVAC actuators in 12 V vehicle platforms. IC Role / Device Role / Timing Role: Primary MCU managing CAN communication with gateway ECU, executing safety-critical lock/unlock sequences, and sampling analog sensor feedback. Use Value: Integrated MSCAN and 20-channel ADC eliminate external interface ICs; 105°C rating ensures reliability in dashboard-mounted units. |
Use Scenario: Closed-loop control of 3-phase BLDC motors in pumps, fans, and compressors with Hall-effect or encoder feedback. IC Role / Device Role / Timing Role: Real-time executor of field-oriented control (FOC) algorithms, generating synchronized PWM outputs via FTM modules and sampling current sensors. Use Value: FTM deadtime insertion and hardware ADC triggering reduce software overhead and improve commutation timing accuracy. |
| Smart Power Distribution Unit | Heavy-Duty Equipment Telematics Node |
Use Scenario: Monitoring and switching of high-current loads (e.g., solenoids, heaters) with overload and short-circuit protection in off-highway machinery. IC Role / Device Role / Timing Role: Fault-monitoring MCU interfacing with current shunts and temperature sensors, communicating status via CAN to main controller. Use Value: On-chip comparators (ACMP1/ACMP2) provide fast (<1 μs) overcurrent detection independent of CPU load. |
Use Scenario: Data aggregation node collecting GPS, IMU, and engine diagnostics in construction or agricultural vehicles for remote fleet management. IC Role / Device Role / Timing Role: CAN gateway and protocol translator between J1939 engine ECUs and cellular modem, with secure firmware update capability. Use Value: 128 KB flash accommodates bootloader, J1939 stack, and OTA update handler; security circuitry prevents unauthorized firmware injection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCF51AC128AVPUE | Same package and pinout; includes CAN interface and 32 KB SRAM (vs. 16 KB) | Required where CAN-based diagnostics or multi-node coordination is needed | Select when CAN bus participation is mandatory and additional RAM is needed for protocol stacks |
| S9KEAZ128AMLH | Kinetis E-series ARM Cortex-M0+, 128 KB flash, 16 KB SRAM, CAN, but no FTM - uses TPM only | Lacks FTM's advanced PWM features (deadtime, center-aligned, paired channels); lower DMIPS/MHz | Choose for ARM ecosystem compatibility and toolchain continuity, accepting reduced motor control flexibility |
Compared with MCF51AC128CCFUER, MCF51AC128AVPUE offers identical footprint and enhanced CAN functionality with more SRAM, while S9KEAZ128AMLH provides ARM architecture benefits but sacrifices FTM-level motor control precision and ColdFire's deterministic BDM debug performance.
Availability
MCF51AC128CCFUER is available at Aetrix Electronics and suitable for automotive body control, industrial motor drives, smart power distribution, and heavy-duty telematics requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MCF51AC128CCFUER 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 acquired Freescale in 2015 and maintains full support for the ColdFire portfolio, emphasizing automotive-grade reliability and long-term industrial supply.
The MCF51AC128 series belongs to Freescale's Controller Continuum® roadmap, specifically engineered as a 32-bit upgrade path from MC9S08AC128 - targeting cost-sensitive, CAN-enabled control applications in harsh environments.
FAQ
What is the maximum operating frequency of the MCF51AC128CCFUER?
The MCF51AC128CCFUER operates at up to 50.33 MHz across its full voltage (2.7–5.5 V) and temperature (–40°C to +105°C) range. This frequency is achievable using the MCG's PLL mode with an external crystal or internal reference, and is validated per Table 16 (MCG Frequency Specifications) in the MCF51AC256 Rev.7 datasheet. Performance remains stable under automotive thermal cycling conditions.
Does the MCF51AC128CCFUER include a CAN controller?
No, the MCF51AC128CCFUER does not include a CAN controller. The "C" in the part number suffix (per Table 3, Orderable Part Number Summary) indicates the absence of CAN functionality. Only parts with "A" suffix (e.g., MCF51AC128AVPUE) include the MSCAN module. This variant retains all other peripherals - ADC, FTM, SPI, IIC - but omits CAN-related pins (TxCAN/RxCAN) and register blocks.
What package type and dimensions does the MCF51AC128CCFUER use?
The MCF51AC128CCFUER uses a 64-pin LQFP package measuring 10 mm × 10 mm with 0.5 mm pitch (Table 22, Package Information). It is RoHS-compliant and lead-free ("E" suffix). Pinout matches Figure 3 in the MCF51AC256 Rev.7 datasheet, and is compatible with standard 64-LQFP PCB footprints used for Freescale/NXP ColdFire devices.
How much SRAM and flash memory does the MCF51AC128CCFUER have?
The MCF51AC128CCFUER integrates 128 KB of on-chip flash memory and 16 KB of static RAM (SRAM), as confirmed in Table 1 (Device Comparison) and Table 3 (Orderable Part Number Summary) of the MCF51AC256 Rev.7 datasheet. Flash supports read/program/erase over full temperature and voltage range; SRAM retains data during low-power stop modes when VDD is maintained.
Is the MCF51AC128CCFUER supported by modern development tools?
Yes, the MCF51AC128CCFUER is supported by NXP's legacy ColdFire toolchain, including CodeWarrior Development Studio v10.7 and later, as well as open-source GDB-based debugging via the BKGD single-wire interface. NXP provides reference designs, AN4307 application note (ColdFire V1 startup code), and validated BSPs for FreeRTOS and MQX - all applicable to MCF51AC128CCFUER.
MCF51AC128CCFUER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 64-QFP
- Series:
- MCF51AC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- Coldfire V1
- Core Size:
- 32-Bit Single-Core
- Speed:
- 50MHz
- Connectivity:
- I2C, SCI, SPI
- Peripherals:
- LVD, PWM, WDT
- Number of I/O:
- 54
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 16K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 20x12b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MCF51AC128CCFUER FAQ
1.How can I place an order for MCF51AC128CCFUER through Aetrix?
Please submit a Request for Quotation (RFQ) for MCF51AC128CCFUER 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 MCF51AC128CCFUER reliable?
The price and inventory of MCF51AC128CCFUER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCF51AC128CCFUER is usually 5 days.
3.What payment methods are accepted for MCF51AC128CCFUER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCF51AC128CCFUER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCF51AC128CCFUER?
MCF51AC128CCFUER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCF51AC128CCFUER 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 MCF51AC128CCFUER?
For technical support, including MCF51AC128CCFUER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCF51AC128CCFUER requirements.
6.How does Aetrix verify that MCF51AC128CCFUER is sourced from the original manufacturer or authorized distributors?
All MCF51AC128CCFUER 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 MCF51AC128CCFUER meets industry standards.
7.What is the process for return or replacement of MCF51AC128CCFUER?
All MCF51AC128CCFUER units undergo pre-shipment inspection (PSI). If there is an issue with MCF51AC128CCFUER, 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 MCF51AC128CCFUER part is unused and in its original packaging.
Return procedure for MCF51AC128CCFUER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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