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NXP Semiconductors MCF51AC128AVPUE
- Part No.:
- MCF51AC128AVPUE
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
MCF51AC128AVPUE.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,063
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Product details
Overview
MCF51AC128AVPUE from NXP Semiconductors (formerly Freescale) is a 32-bit ColdFire V1 microcontroller with CAN interface, 128 KB flash, 32 KB SRAM, and 64-pin LQFP package operating up to 50.33 MHz at 2.7–5.5 V. It integrates dual analog comparators, 24-channel 12-bit ADC, two FTM modules, SCI/SCI2, SPI1/SPI2, IIC, and CRC engine - deployed in industrial motor control and automotive body electronics.
For engineers reviewing the MCF51AC128AVPUE datasheet, MCF51AC128AVPUE pinout, MCF51AC128AVPUE application, or MCF51AC128AVPUE equivalent, key selection criteria include CAN 2.0A/B compliance, 64-pin LQFP footprint compatibility, 128 KB flash/32 KB RAM memory configuration, cold-temperature operation (–40°C to 105°C), and background debug module (BDM) support for embedded firmware development.
Technical Context
The MCF51AC128AVPUE implements the ColdFire V1 core (ISA_C revision) with BDM and real-time debug visibility bus (VBUS), enabling single-wire debugging and hardware trace. Its multipurpose clock generator (MCG) supports FLL/PLL modes with crystal (1–16 MHz) or internal reference, delivering stable system clocks up to 50.33 MHz.
Peripherals are tightly coupled via the system integration module (SIM): the MSCAN controller handles full CAN 2.0A/B frames at up to 1 Mbps with five receive buffers and three prioritized transmit buffers; dual FTM modules provide 16-bit PWM, input capture, and ADC trigger synchronization; and the 12-bit ADC operates asynchronously to reduce noise in low-power modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | ColdFire V1 32-bit RISC CPU, ISA_C instruction set, 0.76 DMIPS/MHz from flash |
| Max Operating Frequency | 50.33 MHz at 2.7–5.5 V supply - enables real-time control loop execution within sub-μs timing budgets |
| Flash / SRAM | 128 KB on-chip flash (read/program/erase over full temp/voltage range) + 32 KB SRAM - sufficient for bootloader + application + data logging |
| CAN Interface | MSCAN module compliant with CAN 2.0A/B, 1 Mbps bit rate, 5 Rx/3 Tx buffers, programmable wakeup and listen-only mode |
| ADC | 12-bit SAR ADC with 24 input channels, asynchronous clock option, auto-compare interrupt, and integrated temperature sensor |
| Timers | Two flexible timer modules (FTM1/FTM2) with up to 6 channels each, supporting edge/center-aligned PWM, deadtime insertion, and ADC hardware triggering |
| Package | 64-pin LQFP, 10 mm × 10 mm, 0.5 mm pitch - compatible with standard SMT reflow profiles and IPC Class 2/3 assembly |
Pinout & Package
64-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch), RoHS-compliant, rated for –40°C to +105°C ambient operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PTA0 / TxCAN | CAN Transmit Output | Dedicated CAN high-speed differential transmitter output; requires external CAN transceiver (e.g., TJA1042) for bus coupling |
| PTA1 / RxCAN | CAN Receive Input | Dedicated CAN receiver input; accepts differential signal from external transceiver; enables CAN frame reception and error detection |
| BKGD / MS | Background Debug / Master Select | Single-wire BDM interface for programming and real-time debugging; also serves as chip select during boot mode configuration |
| RESET | Active-Low Reset Input | Asynchronous reset assertion clears CPU registers and initializes peripherals; debounced externally for reliable power-on and fault recovery |
| VDD / VSS | Power Supply / Ground | Separate digital (VDD/VSS) and analog (VDDA/VSSA) domains with dedicated pins - critical for ADC noise isolation and mixed-signal integrity |
| PTF0–PTF7 / RGPIOx | Rapid GPIO Ports | 16-bit RGPIO block connected directly to local platform bus - enables single-cycle I/O toggle and atomic set/clear operations for time-critical control signals |
Key Features
| Feature | Design Value |
|---|---|
| On-chip Security Circuitry | Prevents unauthorized read-out of flash/SRAM contents via hardware lock bits and secure debug disable |
| Three Low-Power Stop Modes | Stop1/Stop2/Stop3 reduce current to <10 μA while retaining RAM content and selective peripheral wake-up capability |
| Hardware CRC Generator | 16-bit CRC-CCITT (x¹⁶+x¹²+x⁵+1) engine accelerates firmware update validation and communication packet integrity checks |
| Programmable Slew Rate & Drive Strength | Configurable output drive on all GPIOs minimizes EMI and ensures signal integrity across varying PCB trace lengths and loads |
| Integrated Temperature Sensor | On-die thermal sensor feeds ADC channel for system-level thermal monitoring without external components |
Applications
| Industrial Motor Control | Automotive Body Electronics |
|---|---|
Use Scenario: Closed-loop BLDC motor commutation using hall-effect feedback and PWM-driven gate drivers. IC Role / Device Role / Timing Role: Real-time execution of FOC algorithms, synchronized ADC sampling of phase currents, and precise 100 ns-resolution PWM generation via FTM modules. Use Value: Eliminates need for external PWM timers or ADC controllers; reduces BOM count by integrating CAN for actuator coordination and diagnostics. | Use Scenario: Central body controller managing door locks, window lift, mirror adjustment, and lighting via LIN/CAN networks. IC Role / Device Role / Timing Role: CAN node handling message arbitration, filtering, and transmission scheduling; SCI2 configured for LIN physical layer communication. Use Value: Single-chip solution replaces discrete CAN transceiver + microcontroller combo; supports ISO 11898-1 and LIN 2.2 protocols natively. |
| Smart Energy Metering | Medical Diagnostic Equipment |
Use Scenario: Polyphase electricity meter with voltage/current sensing, energy calculation, tamper detection, and HPLC communication. IC Role / Device Role / Timing Role: High-accuracy 12-bit ADC sampling synchronized to line frequency; CRC engine validating firmware updates over PLC channel. Use Value: Meets IEC 62053-21 Class 0.5 accuracy requirements; eliminates external CRC IC and reduces firmware validation latency by >90%. | Use Scenario: Portable ultrasound front-end requiring analog signal conditioning, time-of-flight measurement, and battery-powered operation. IC Role / Device Role / Timing Role: Low-noise ADC acquisition with asynchronous clocking; rapid GPIO toggling for ultrasonic pulse generation and echo timing. Use Value: Enables sub-microsecond timing resolution for distance measurement; extends battery life via Stop3 mode during idle intervals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCF51AC256AVPUE | 256 KB flash, same 64-pin LQFP package, identical peripheral set and CAN implementation | Supports larger firmware images and dual-application partitioning (e.g., safety + non-safety code) | Select when future firmware expansion or ASIL-B functional safety partitioning is required |
| S9KEAZ128AMLH | Kinetis E-series ARM Cortex-M0+, 128 KB flash, 16 KB SRAM, 64-pin LQFP, no native CAN (requires external transceiver + software stack) | Lacks hardware CAN controller; relies on software-based CAN FD stack with higher CPU overhead | Choose for ARM ecosystem alignment and toolchain continuity where CAN bandwidth ≤500 kbps suffices |
Compared with MCF51AC128AVPUE, MCF51AC256AVPUE offers double flash capacity without layout change, while S9KEAZ128AMLH trades deterministic CAN timing for ARM compatibility - making the original part optimal for cost-sensitive, CAN-intensive real-time control where ColdFire toolchains are established.
Availability
MCF51AC128AVPUE is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, and smart energy metering requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MCF51AC128AVPUE 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 the ColdFire portfolio for legacy industrial and automotive designs requiring deterministic real-time performance and long-term supply assurance.
The MCF51AC series targets cost-optimized 32-bit upgrades from 8-bit MCUs (e.g., MC9S08AC128), emphasizing CAN-enabled control, mixed-signal integration, and debug-rich development for resource-constrained embedded systems.
FAQ
What is the maximum operating frequency of the MCF51AC128AVPUE and under what conditions?
The MCF51AC128AVPUE operates at up to 50.33 MHz across its full specified voltage range of 2.7 V to 5.5 V and temperature range of –40°C to +105°C. This frequency is achieved using the MCG's PLL mode with an external 8 MHz crystal and internal FLL stabilization. The device delivers 0.76 DMIPS per MHz when executing from flash memory, confirmed in Section 1.3.1 of the Rev.7 datasheet.
Does the MCF51AC128AVPUE support hardware CAN protocol handling without external transceivers?
No - the MCF51AC128AVPUE integrates the MSCAN controller (a full CAN 2.0A/B protocol engine), but requires an external CAN physical-layer transceiver (e.g., TJA1042 or SN65HVD230) on PTA0/TxCAN and PTA1/RxCAN pins to drive the bus. The MCU handles message filtering, buffering, arbitration, and error management in hardware, offloading the CPU significantly.
How many analog-to-digital converter (ADC) input channels does the MCF51AC128AVPUE support, and what is its resolution?
The MCF51AC128AVPUE features a 12-bit successive-approximation ADC with up to 24 configurable input channels (AD1P0–AD1P23), as verified in Table 1 (Device Comparison) and Section 1.3.1. Conversion results are right-justified and support 12-, 10-, or 8-bit formats. The ADC includes an on-chip temperature sensor and supports asynchronous clocking to minimize noise coupling during low-power operation.
What debug interfaces are available on the MCF51AC128AVPUE, and how are they implemented?
The MCF51AC128AVPUE provides a single-wire background debug module (BDM) via the BKGD/MS pin, supporting full read/write memory access, breakpoint setting, and real-time trace via the debug visibility bus (VBUS). It includes six hardware breakpoints (four PC, one address pair, one data) and on-chip trace buffer with programmable start/stop triggers - all documented in Section 1.3.1 and Figure 1 of the Rev.7 datasheet.
Is the MCF51AC128AVPUE pin-compatible with other members of the MCF51AC family, such as the MCF51AC256AVPUE?
Yes - the MCF51AC128AVPUE and MCF51AC256AVPUE share identical 64-pin LQFP mechanical footprint, pin assignments, and electrical characteristics per Table 4 (Pin Availability) and Figure 3. Both devices use the same V1 ColdFire core, peripheral register map, and memory layout above 128 KB; only flash size differs. This allows direct replacement in existing designs when firmware size permits.
MCF51AC128AVPUE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 64-LQFP
- Series:
- MCF51AC
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- Coldfire V1
- Core Size:
- 32-Bit Single-Core
- Speed:
- 50MHz
- Connectivity:
- CANbus, 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:
- 32K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 20x12b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MCF51AC128AVPUE FAQ
1.How can I place an order for MCF51AC128AVPUE through Aetrix?
Please submit a Request for Quotation (RFQ) for MCF51AC128AVPUE 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 MCF51AC128AVPUE reliable?
The price and inventory of MCF51AC128AVPUE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCF51AC128AVPUE is usually 5 days.
3.What payment methods are accepted for MCF51AC128AVPUE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCF51AC128AVPUE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCF51AC128AVPUE?
MCF51AC128AVPUE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCF51AC128AVPUE 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 MCF51AC128AVPUE?
For technical support, including MCF51AC128AVPUE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCF51AC128AVPUE requirements.
6.How does Aetrix verify that MCF51AC128AVPUE is sourced from the original manufacturer or authorized distributors?
All MCF51AC128AVPUE 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 MCF51AC128AVPUE meets industry standards.
7.What is the process for return or replacement of MCF51AC128AVPUE?
All MCF51AC128AVPUE units undergo pre-shipment inspection (PSI). If there is an issue with MCF51AC128AVPUE, 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 MCF51AC128AVPUE part is unused and in its original packaging.
Return procedure for MCF51AC128AVPUE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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