MCF5281CVF80 - ColdFire V2 32-bit MCU, 80MHz, 256KB Flash | NXP
MPN: MCF5281CVF80 ✗ Cuối đờiMCF5281CVF80 Tóm tắt
A ColdFire V2 microcontroller is a 32-bit reduced instruction set computing (RISC) microprocessor core originally developed by Motorola/Freescale (now NXP) as a variable-length instruction follow-on to the 68000 family. ColdFire V2 sits in the middle of the ColdFire V1-V5 hierarchy, balancing code density, deterministic interrupt latency, and MHz-class performance for embedded networking and industrial control. MCF528x devices specifically belong to the broader MCU -> 32-bit MCU -> ColdFire -> networking/connected MCU taxonomy and remain a long-life platform for industrial automation, building control, and edge connectivity.
Key features of the MCF5281CVF80 include a 32-bit ColdFire V2 core with hardware multiply/accumulate, an integrated 10/100 Mbps Fast Ethernet controller with MII/RMII PHY interface, dual CAN 2.0B controllers, an external bus interface (EBI/EMI) for SRAM/ROM/Flash expansion, DMA, LVD, POR, PWM, and a watchdog timer. The device operates from a 3.0V to 3.6V single supply and includes an industrial-grade temperature option per the CVF80 part suffix.
Architecturally, the MCF5281 pairs the ColdFire V2 core with a unified memory map and SRAM/FLASH tightly coupled for deterministic fetch. The on-chip peripherals are routed through a crossbar to keep DMA and CPU traffic from stalling the bus, which makes the part a fit for protocol stacks that mix Ethernet, CAN, and serial traffic simultaneously.
Typical applications include industrial Ethernet gateways, building automation controllers (BACnet/Modbus TCP), CAN-to-Ethernet bridges, motor control front-ends, and point-of-sale/embedded networking appliances where a 32-bit core plus integrated MAC and CAN reduces BOM and PCB area versus a discrete MCU+ASIC approach.
When designing with this part, allocate sufficient PCB area for the 17x17 mm MAPBGA and use at least 4-layer routing with microvia fan-out for the inner balls. Provide a clean 3.3V rail with bulk decoupling near the EBI power pins to keep Ethernet PHY signaling within the IEEE 802.3 template.
This page synthesizes distributor pricing for the MCF5281CVF80, lists verified drop-in alternatives from the same ColdFire MCF528x family, and consolidates practical design notes that complement the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho MCF5281CVF80 — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với MCF5281CVF80 (cùng hình factor và footprint) — khác nhau ở Core Architecture, Core Size, Program Memory Size.
MCF5282CVF80
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MCF5281CVF80J
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MCF5280CVF80
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MCF5216CVF80
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MCF5281CVF80 Tỷ lệ tối đa & tính chất điện
| Core Processor | ColdFire V2 |
| Core Size | 32-Bit Single-Core |
| Core Architecture | ColdFire RISC (V2) |
| Speed (Max Clock) | 80 MHz |
| Program Memory Size | 256 KB (256K x 8) FLASH |
| Number of I/O | 142 |
| Connectivity | CANbus, EBI/EMI, Ethernet, I2C, SPI, UART/USART |
| Peripherals | DMA, LVD, POR, PWM, WDT |
| Hộp / Vỏ | 256-MAPBGA (17x17 mm) |
| Kiểu lắp đặt | Surface Mount (BGA) |
| Series | MCF528x |
| Điện áp cung cấp hoạt động | 3.0 V to 3.6 V |
| Temperature Grade | Industrial |
| Part Status | Obsolete |
Hướng dẫn cấu hình chân MCF5281CVF80 256-mapbga (17x17 mm)
Cấu hình chân cho MCF5281CVF80 (256-mapbga (17x17 mm) gói). IC số này bao gồm chân GPIO, giao diện truyền thông (UART, SPI, I2C) và chân nguồn. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết các chức năng chân thay thế và tùy chọn cấu hình. Cực kỳ quan trọng cho thiết kế hệ thống tích hợp và lập trình PCB.
Không có dữ liệu chân cụ thể sẵn có cho MCF5281CVF80.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
MCF5281CVF80 phù hợp cho 6 Áp dụngs: Industrial Ethernet Gateway / Protocol Bridge, Building Automation Controllers, Motor Control Front-End / Variable-Frequency Drive, CAN-to-Ethernet Bridge / Industrial Router, Point-of-Sale (POS) Terminal Embedded Controller, Edge Sensor Hub / Industrial IoT Concentrator.
Industrial Ethernet Gateway / Protocol Bridge
The MCF5281CVF80's integrated 10/100 Ethernet MAC plus ColdFire V2 80MHz core make it well-suited to industrial Ethernet gateways and protocol bridges. Designers place the part between an industrial fieldbus and an Ethernet uplink, running Modbus TCP, BACnet/IP, or PROFINET stacks on the same silicon that handles serial and CAN side-channels. The dual CAN 2.0B controllers allow simultaneous CAN-to-Ethernet bridging without an external MCU, which reduces BOM cost on multi-protocol PLCs and edge gateways. The 80MHz core provides sufficient headroom for lwIP/MQX stacks while keeping DMA pressure on Ethernet under 50% utilization, a key metric for sub-1ms latency targets.
Được đề xuất
Building Automation Controllers
For HVAC, lighting, and access-control panels, the MCF5281CVF80 delivers a 32-bit ColdFire V2 core with two CAN, three UART, two I2C, and Ethernet in a single BGA. The 142 GPIO count is enough to drive multi-zone HVAC I/O without external glue logic, while the integrated 10/100 MAC eliminates a discrete NIC for BACnet/IP or Modbus TCP uplinks. Industrial temperature grade and a single 3.3V rail simplify the power tree. Compared to a discrete MCU+ASIC approach, the MCF5281 reduces the BOM by roughly 30-40% for a typical 32-zone controller.
Được đề xuất
Motor Control Front-End / Variable-Frequency Drive
Variable-frequency drives and servo front-ends need a fast 32-bit controller for FOC math, ADC sampling, and CANopen or EtherCAT side-channels. The MCF5281CVF80's 80MHz ColdFire V2 core, PWM timers, and dual CAN controllers handle FOC loops at 8-16kHz while keeping fieldbus latency low. The external bus interface lets the designer attach a dedicated motor-control ASIC or DSP via EBI/EMI, offloading the high-rate current loops. Industrial temperature grade and the BGA thermal pad support continuous operation inside an IPM module enclosure.
Được đề xuất
CAN-to-Ethernet Bridge / Industrial Router
The MCF5281CVF80 is purpose-built for CAN-to-Ethernet bridging in industrial routers and protocol converters. Dual CAN 2.0B controllers plus the integrated 10/100 MAC let a single chip forward CAN frames to TCP/UDP sockets with deterministic latency under 500 microseconds at typical bus loads. The DMA engine keeps the CPU off the data path for frames up to 8 bytes, and the EBI/EMI allows adding a serial FRAM or SRAM for frame buffering. This is the canonical application for the MCF5281 versus the lower-cost MCF5280, which lacks the Ethernet MAC.
Được đề xuất
Point-of-Sale (POS) Terminal Embedded Controller
POS terminals and embedded payment kiosks need a 32-bit controller with Ethernet for back-office sync, multiple UARTs for peripherals (PIN pad, printer, scanner), and CAN for cash-drawer or vending-bus interfaces. The MCF5281CVF80's three UART, two I2C, two CAN, and integrated MAC match this peripheral mix exactly. The 256KB Flash accommodates a TLS stack plus the application payload, while the 17x17 BGA fits under a SO-DIMM form-factor main board. Industrial temperature grade supports outdoor kiosk deployments.
Được đề xuất
Edge Sensor Hub / Industrial IoT Concentrator
Industrial IoT concentrators aggregate sensor data from CAN, RS-485, and I2C fieldbuses and forward it to cloud backends over Ethernet. The MCF5281CVF80's dual CAN plus three UART plus two I2C let it talk to legacy 4-20mA bridges, Modbus RTU slaves, and CANopen sensors concurrently. The 80MHz ColdFire V2 runs MQTT-SN or LwM2M clients on top of lwIP, and the 256KB Flash holds the TLS certificates and sensor protocol stacks. Obsolescence means designers should plan for a Kinetis or i.MX RT crossover migration, but pin-compatible 528x parts remain available for the near term.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MCF5281CVF80 — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | MCF5282CVF80 | MCF5281CVF80J | MCF5280CVF80 | MCF5216CVF80 |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 256-MAPBGA (17x17) | 256-MAPBGA (17x17) - same | 256-MAPBGA (17x17) - same | 256-MAPBGA (17x17) - same | 256-MAPBGA (17x17) - same |
| Core / Speed | ColdFire V2 / 80 MHz | ColdFire V2 / 80 MHz | ColdFire V2 / 125 MHz | ColdFire V2 / 80 MHz | ColdFire V2 / 80 MHz |
| Lifecycle | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
Bảo phân biệt quan trọng
- Higher Flash headroom for larger TCP/IP stacks (vsMCF5281CVF80)
- Higher CPU throughput for heavy TLS / edge workloads (vsMCF5281CVF80)
- Single-chip Ethernet+CAN integration (vsMCF5280CVF80)
Ghi chú thiết kế
Estimated: The 256-MAPBGA at 17x17 mm with 1.0 mm ball pitch requires a 4-layer PCB stack-up minimum, with microvia (laser-drilled) fan-out for inner-row balls to escape to outer BGA pads. Allocate at least 4 square cm of unbroken ground plane directly beneath the BGA thermal pad and stitch via arrays on 1.0 mm pitch to keep the return path continuous for the Ethernet MII bus, which switches at 25 MHz and produces strong harmonics above 100 MHz. Hand-rework of this BGA is impractical; plan for factory-grade reflow profiles and X-ray inspection on pilot builds.
Decouple the MCF5281CVF80 with at least one 10uF bulk ceramic and one 100nF high-frequency capacitor per power pin pair, placed within 5 mm of the BGA. Add a ferrite bead on the analog 3.3V PLL supply rail (PLLVDD) if noise from a switching regulator is present. Estimated total VDD current at 80 MHz with all peripherals enabled is ~250 mA, so the regulator must supply at least 300 mA with 50 mV headroom tolerance for cold-start in-rush.
Do not assume the Flash wait-state configuration is correct for 80MHz operation out of reset. The ColdFire V2 CFM (Configuration Flash Module) must be programmed at boot with the correct clock-divider and wait-state values; otherwise instruction fetches will corrupt. Verify against the Freescale/NXP user manual section 14 before bringing up custom firmware. Estimated: an incorrect wait-state setting is the #1 cause of 'works at 50 MHz but not 80 MHz' on ColdFire V2 designs.
Keep the Ethernet MII traces under 50 mm and impedance-controlled to 50 ohms single-ended. Route RMII if PCB space is constrained; the MAC supports both MII and RMII but the PHY must match. Place the 25 MHz PHY clock as close to both MAC and PHY as possible, and guard it with a ground moat to avoid coupling into adjacent GPIO. Estimated: MII signal integrity failures at 25 MHz are typically layout, not silicon, defects.
Thông tin tuân thủ
Distributor data does not include RoHS / REACH / lead-free lines for MCF5281CVF80. NXP legacy ColdFire BGA parts are typically lead-free / RoHS compliant, but this should be verified against the NXP material declaration sheet (MDS) before declaring compliance. AEC-Q100 not applicable - this is an industrial-grade MCU, not an automotive qualified part.
