MCF51AC128AVFUE - 50MHz 128KB Flash 32-Bit MCU | NXP
MPN： MCF51AC128AVFUE ✓ 啟用中MCF51AC128AVFUE 概覽
A microcontroller is a programmable semiconductor that integrates a processor core, memory, and peripherals into one device. The ColdFire architecture uses a variable-length reduced instruction set computer design, allowing compact code while providing 32-bit processing capability. The MCF51AC family belongs to the Flexis series, where 8-bit and 32-bit controller options support migration and shared hardware concepts. This positioning makes the MCF51AC128AVFUE relevant to industrial controls, appliances, data acquisition equipment, and connected embedded products.
The verified listing identifies the MCU as part of the MCF51AC family and specifies a 50 MHz maximum clock, 128 KB Flash, and 64-QFP package. The 128 KB Flash figure corresponds to 128K by 8 bits according to the distributor description. Because the supplied snippets do not provide RAM size, pin-level functions, ADC specifications, timer resources, operating-temperature limits, or electrical absolute-maximum ratings, those values are retained as data-needed items rather than inferred.
The ColdFire V1 core is suitable for embedded control workloads requiring deterministic digital processing, interrupt-driven peripherals, and moderate code density. The 50 MHz clock provides a useful performance envelope for protocol handling, state machines, motor or appliance control, and supervisory logic. Actual application suitability depends on the peripheral mix, memory map, timing, and pin multiplexing documented in the manufacturer datasheet. The 64-QFP package exposes more pins than a small QFN and can simplify access to external interfaces, subject to the verified pinout.
Typical designs can use the MCU for industrial control boards, motor-control supervisory circuits, building equipment, test instruments, and low-to-medium complexity consumer products. Designers should verify clock configuration, power sequencing, reset behavior, and all peripheral electrical limits against the official documentation before layout release. The QFP package should be paired with a footprint that matches the exact 14 mm by 14 mm outline and pin pitch.
A key sourcing consideration is lifecycle status. The supplied distributor results show active purchasing pages and list the part for sale, but they do not provide a current manufacturer lifecycle declaration. Confirm stock, lead time, and authorized-channel status with the manufacturer or an authorized distributor before committing to production. This page distinguishes verified facts from unavailable technical parameters.
直接替換替代品，適用於 MCF51AC128AVFUE — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： MCF51AC128AVFUE （相同外形與佔位） — 差異在於 Package, Operating Temperature, Series, Supply Voltage.
MCF51AC128ACFUE
✅ 直接替換聯絡詢價
查看資料表 →MCF51AC256ACFUE
✅ 直接替換✓ 有庫存
$8.12 / 單位
查看資料表 →MCF51AC256BVFUE
✅ 直接替換📋 參考替代品（不在目錄中）
MCF51AC256AVFUE
✅ 直接替換📋 參考替代品（不在目錄中）
MCF51AC256BCFUE
✅ 直接替換📋 參考替代品（不在目錄中）
MCF51AC128AVFUE 最大額定值與電氣特性
| Product Type | 32-bit microcontroller |
| Processor Core | ColdFire V1 |
| Maximum Operating Frequency | 50 MHz |
| Flash Memory | 128 KB |
| Flash Organization | 128K x 8 bits |
| 供應電壓 | 3.3 V / 5 V |
| 封裝 | 64-QFP |
| Package Dimensions | 14 mm x 14 mm |
| Architecture | Variable-length RISC |
| Family | MCF51AC |
| Series | Flexis |
| RoHS | unknown |
| REACH | unknown |
| 安裝類型 | Surface mount |
MCF51AC128AVFUE 14 mm x 14 mm 腳位配置指南
MCF51AC128AVFUE（14 mm x 14 mm 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： MCF51AC128AVFUE.
請參閱 資料表 以查看完整腳位配置。
典型應用
MCF51AC128AVFUE 適用於 7 應用s: Industrial Control Board, Appliance Controller, Data Acquisition Front End, Building and HVAC Equipment, Motor and Power-System Supervisory Control, Communication Gateway Controller, Test and Measurement Instrument.
Industrial Control Board
The MCF51AC128AVFUE fits an industrial supervisory controller when the design needs 32-bit processing, a 50 MHz ColdFire V1 core, and 128 KB of Flash for control code. It can supervise sensors, execute state machines, manage digital interlocks, and coordinate actuators through the MCU’s documented peripheral resources. The 64-QFP package provides a larger external-pin footprint than a compact QFN, which can simplify routing to external interface components. Because the supplied data does not confirm RAM, ADC, timer, or serial specifications, the final controller selection requires checking the official datasheet against the industrial control loop and environmental requirements.
推薦
Appliance Controller
The MCF51AC128AVFUE can serve as the central controller in an appliance or electromechanical system because its 50 MHz ColdFire V1 core provides processing headroom for user-interface logic, timing, and supervisory control. The verified 128 KB Flash capacity is suitable for firmware storage in many compact products, while the 64-QFP package makes external connections manageable on a conventional PCB. Designers must confirm the MCU’s verified I/O count, voltage tolerances, timers, communication peripherals, and operating temperature before assigning motors, relays, sensors, or display interfaces.
推薦
Data Acquisition Front End
The MCF51AC128AVFUE is a candidate for data-acquisition equipment that requires deterministic embedded processing and local control rather than a high-end host processor. Its 50 MHz ColdFire V1 core can execute sampling sequencing, filtering, calibration logic, and data formatting, while the 128 KB Flash can hold application firmware. The verified material does not specify ADC resolution, sample rate, RAM, or serial protocols, so analog-front-end and communications decisions must remain conditional until those specifications are confirmed in the manufacturer documentation.
推薦
Building and HVAC Equipment
The MCF51AC128AVFUE can be evaluated for building equipment and HVAC supervisory functions that combine digital inputs, control logic, communication, and configurable timing. The 32-bit ColdFire architecture and 50 MHz clock are useful for managing multiple control states and communicating with sensors or remote modules, while the 128 KB Flash supports firmware storage. Before using it in a deployed HVAC product, verify the exact peripheral set, supply limits, temperature range, watchdog behavior, and any regulatory or environmental requirements in the official NXP documentation.
推薦
Motor and Power-System Supervisory Control
The MCF51AC128AVFUE can be used as a supervisory controller in motor or power-system equipment where a separate processor handles high-energy switching and the MCU manages sequencing, interlocks, diagnostics, and protection coordination. The 50 MHz core provides sufficient architectural headroom for complex control state machines, while the 128 KB Flash stores application logic. It should not be assumed to directly replace a power-semiconductor gate driver or safety controller; verify timer precision, ADC interfaces, fault pins, voltage domains, isolation requirements, and thermal limits in the manufacturer datasheet.
推薦
Communication Gateway Controller
The MCF51AC128AVFUE may fit a small protocol-conversion gateway when the firmware fits within 128 KB Flash and the application needs a 32-bit control processor rather than a high-power host MCU. Its ColdFire V1 architecture can support packet handling, command routing, buffering, and device-management logic. The verified data does not identify Ethernet, USB, CAN, UART, or other communication peripherals, so gateway feasibility depends on the complete peripheral list. Use the exact NXP documentation to confirm transceiver interfaces, electrical levels, DMA behavior, and timing before selecting it.
推薦
Test and Measurement Instrument
The MCF51AC128AVFUE is suitable for evaluation as a control processor in a compact test or measurement instrument when the product needs deterministic sequencing, local calibration logic, and firmware storage. The 32-bit core and 50 MHz operating point can support instrument control, status handling, and communication tasks, while the 64-QFP package permits routing to external converters and interface logic. The supplied sources do not confirm high-resolution ADC, DAC, precision references, timing resources, or operating-temperature limits, so those specifications must be verified before claiming metrology performance.
推薦
推薦產品摘要
工程參考資料，適用於 MCF51AC128AVFUE — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | MCF51AC128ACFUE | MCF51AC256ACFUE | MCF51AC256BVFUE | MCF51AC256AVFUE | MCF51AC256BCFUE |
|---|---|---|---|---|---|---|
| Package | 64-QFP (14x14 mm) | 64-QFP (14x14 mm) | 64-QFP (14x14 mm) | 64-QFP (14x14 mm) | 64-QFP (14x14 mm) | 64-QFP (14x14 mm) |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
主要差異化特點
- Verified 128 KB Flash configuration (對比MCF51AC256AVFUE)
- 50 MHz verified operating point (對比MCF51AC128ACFUE)
- Documented 64-QFP 14 mm by 14 mm package (對比MCF51AC256ACFUE)
- ColdFire V1 32-bit architecture (對比MCF51AC256BVFUE)
設計說明
Estimated footprint validation is required before layout: the verified package is 64-QFP at 14 mm by 14 mm, but the exact lead pitch, exposed-pad configuration, courtyard, and pin numbering must be copied from the official package drawing. Do not infer a land pattern from the package name alone. Compare the PCB library against the NXP mechanical drawing and use a paste mask and assembly profile approved for the actual supplier.
The verified listing states 3.3 V and 5 V support, but it does not provide the complete operating voltage range or current budget. Before connecting external circuitry, confirm the device’s VDD limits, I/O pin thresholds, internal regulator behavior, startup sequence, and maximum current in the manufacturer datasheet. Add the specified decoupling capacitors at the power pins and keep return paths short to reduce supply noise.
Do not select a replacement solely because its MPN begins with MCF51AC or because a distributor lists the same 64-QFP family. Verify Flash, RAM, clock, package dimensions, pin names, peripheral mapping, voltage domains, interrupt behavior, and software compatibility. In particular, the listed MCF51AC256 variants indicate a different memory class from the 128 KB target and must not be treated as equivalent without NXP confirmation.
The supplied sources use both the historical Freescale Semiconductor name and NXP USA Inc. in distributor records. Treat that as a sourcing-history issue, not proof that every listing is identical. Confirm the manufacturer, authorized status, date code, package, and exact ordering code on the current NXP documentation before approving the component for production.
合規資訊
The supplied verified data does not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. Compliance must be confirmed from the current NXP product documentation or supplier declarations.
