MCF51JE256CMB - 32-Bit 50MHz 256KB MCU | NXP
料号： MCF51JE256CMB ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $10.9186 | $10.92 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
MCF51JE256CMB 概述
A microcontroller is a programmable system-on-chip that integrates a processor core, nonvolatile program memory, working memory, peripherals, and input/output interfaces. The MCF51JE belongs to the ColdFire V1 MCU hierarchy and combines USB connectivity, high-resolution analog conversion, timing, communications, and measurement functions. This makes the device useful for industrial control, data acquisition, USB-enabled instruments, and embedded consumer equipment.
Key verified characteristics include 256 KB of program flash, 32 KB of RAM, 48 I/O pins, a 50 MHz operating frequency, an external oscillator, and operation from 2.5 V or 3.3 V supplies. The 81-LBGA or 81-MAPBGA package supports dense PCB integration but requires careful escape routing and thermal design because of its fine ball pitch and central land pattern.
The ColdFire V1 core provides a 32-bit RISC-oriented architecture for embedded control, while the integrated analog and peripheral resources reduce the need for external components. USB connectivity enables USB-connected peripherals or host-side control functions, depending on the device configuration and firmware requirements. The high-resolution ADC and DAC resources described by the manufacturer support precision measurement and signal-generation designs.
Typical applications include USB data-acquisition equipment, industrial measurement modules, compact control systems, laboratory instruments, and embedded USB accessories. The external oscillator requirement means the system must provide an appropriate clock source and associated layout. Designers should also verify the complete pin multiplexing, power sequencing, decoupling, and exposed-pad requirements directly against the NXP MCF51JE256/128 datasheet before layout release.
A key design consideration is package escape routing. Because the device uses an 81-ball MAPBGA rather than a leaded package, power, ground, USB, analog, and high-speed signals need short, controlled routes through the PCB stack-up. The NXP datasheet is the authoritative source for ball assignments, electrical limits, AC timing, power consumption, and reference circuit details.
直接替换替代料： MCF51JE256CMB ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： MCF51JE256CMB （相同外形与封装尺寸） ——差异在于 Package, Operating Temperature, Core Architecture, RAM, ADC.
快速对比工具——选择替代料号进行并排对比：
MCF51JE256CLK
✅ 直接替换✓ 有现货
$8.95 / 个
查看数据手册 →MCF51JE128CMB
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
联系询价
查看数据手册 →MCF51JE256CBM
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MCF51JE256VMB
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
联系询价
查看数据手册 →MCF51JE256CFB
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MCF51JE256CMB 最大额定值与电气特性
| Product Type | 32-bit microcontroller |
| Processor Core | ColdFire V1 |
| Architecture | 32-bit RISC |
| Maximum Operating Frequency | 50 MHz |
| Program Memory Size | 256 KB (256K x 8) |
| RAM Size | 32K x 8 |
| Number of I/O Pins | 48 |
| 电源电压 | 2.5 V or 3.3 V |
| Oscillator Type | External |
| 封装 | 81-MAPBGA (10 x 10 mm) |
| Package Type | 81-LBGA / MAPBGA |
| USB Connectivity | Supported |
| ADC | High-resolution ADC module |
| DAC | High-resolution DAC module |
| Power Characteristics | Low-power operation |
| Data Format | 32-bit |
| 安装类型 | Surface Mount |
| Packaging | Tray |
MCF51JE256CMB 81-lbga / mapbga 引脚配置指南
MCF51JE256CMB（81-lbga / mapbga 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： MCF51JE256CMB.
请参阅 数据手册 以查看完整引脚配置。
典型应用
MCF51JE256CMB 适用于 6 应用s: USB Data-Acquisition System, Industrial Measurement Module, Laboratory Instrument Controller, Compact USB Peripheral, Embedded Control and Sensor Node, Programmable Test and Measurement Controller.
USB Data-Acquisition System
MCF51JE256CMB fits a USB data-acquisition system because the verified device combines USB connectivity, a 50 MHz 32-bit ColdFire V1 core, 256 KB of flash, and 32 KB of RAM. These resources support sampling control, buffering, configuration handling, and USB protocol firmware in one device. The high-resolution ADC resources described for the MCF51JE256/128 family are useful when the measurement front end must share a compact controller with data transfer. Designers should verify ADC resolution, acquisition timing, USB mode, and analog limits in the NXP datasheet.
推荐
Industrial Measurement Module
The MCF51JE256CMB is a strong candidate for an industrial measurement module requiring local control, data processing, and USB connectivity. Its 50 MHz ColdFire V1 core provides computational headroom for signal conditioning control, while 256 KB flash stores firmware and 32 KB RAM supports working buffers. The 48 I/O pins can serve digital sensors, alarms, and status signals, while the documented ADC and DAC resources support measurement and stimulus functions. Industrial suitability still depends on temperature, EMC, isolation, and lifecycle requirements not provided in the supplied snippets.
推荐
Laboratory Instrument Controller
MCF51JE256CMB can serve as the control processor in a compact laboratory instrument where deterministic control, USB connectivity, and analog measurement must coexist. The verified 32-bit architecture and 50 MHz operating frequency support protocol handling, timing control, and instrument state management, while the 256 KB flash and 32 KB RAM fit moderate embedded workloads. Use the device for front-panel control, sensor readout, calibration data handling, and host communication. Confirm clock stability, USB electrical requirements, and analog accuracy against the manufacturer datasheet before production release.
推荐
Compact USB Peripheral
MCF51JE256CMB is appropriate for a compact USB peripheral that needs more control logic and memory than a basic 8-bit device. The 50 MHz ColdFire V1 processor can manage USB enumeration, configuration descriptors, device state, and application tasks, while 256 KB flash accommodates firmware and constants and 32 KB RAM supports packet processing. The 48 I/O pins provide interfaces for buttons, indicators, sensors, or actuators. Confirm whether the target USB mode requires external transceiver circuitry and validate the exact USB timing and power requirements from the NXP documentation.
推荐
Embedded Control and Sensor Node
The MCF51JE256CMB can be used for an embedded sensor node that combines local measurement, digital control, and USB connectivity. Its 32-bit ColdFire V1 core and 50 MHz maximum frequency provide processing capacity for filtering, control loops, and protocol tasks, while the verified 48 I/O pins support digital sensors and actuators. The high-resolution ADC and DAC resources described for the family can reduce system complexity when analog measurement and stimulus control are required. Validate sensor input ranges, sampling timing, power consumption, and clock behavior before deployment.
推荐
Programmable Test and Measurement Controller
MCF51JE256CMB is well suited to a programmable test or measurement controller requiring deterministic digital control and flexible I/O. Its 50 MHz ColdFire V1 core can execute sequencing, timing, limit checking, and data-formatting tasks, while 32 KB RAM provides room for temporary measurement results. The 81-MAPBGA package supports a high pin-count design, and the family's USB connectivity can simplify connection to a host computer or automated test system. Because the package is fine-pitch and the clock is external, PCB escape routing and clock integrity require careful review.
推荐
推荐产品汇总
工程参考数据： MCF51JE256CMB ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | MCF51JE256CLK | MCF51JE128CMB | MCF51JE256CBM |
|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
关键差异点
- Specific 256 KB flash configuration （对比 MCF51JE128CMB)
- 50 MHz verified operating target （对比 MCF51JE256CLK)
- 81-ball MAPBGA integration （对比 MCF51JE256CLK)
设计说明
MCF51JE256CMB uses an 81-MAPBGA or 81-LBGA package, so power, ground, USB, analog, and high-speed signal nets require deliberate via escaping. Start the layout from the official NXP land pattern and assign the shortest practical routes to power and ground. Confirm ball assignments against the manufacturer datasheet because the supplied search results provide only the package size and pin count, not the complete ball map.
The target is specified for 2.5 V or 3.3 V operation and uses an external clock. Place required decoupling close to the corresponding supply balls and keep clock distribution away from switching regulators and high-current return paths. The exact capacitor values, voltage sequencing, and power-mode current limits must come from the NXP MCF51JE256/128 datasheet rather than being inferred from the distributor summary.
Because the MCU is external-clock dependent, route the clock source with short, controlled-impedance geometry and minimize stubs and test-point discontinuities. Validate rise time, fall time, duty cycle, jitter tolerance, and the maximum external-clock frequency against the datasheet. Keep analog inputs and references away from digital clock and USB return currents, and provide a quiet return path for measurement-sensitive circuitry.
Do not treat MCF51JE256CLK or another family-related ordering code as a direct replacement without confirming the exact package, ball assignment, voltage, memory, clocking, USB configuration, temperature grade, and lifecycle status. Also do not infer compliance or internal oscillator support from product-family descriptions. Use the NXP ordering table and current distributor documentation before releasing a replacement BOM or PCB layout.
合规信息
The supplied verified data does not state compliance claims for the exact ordering code MCF51JE256CMB. Obtain current NXP environmental and product declarations before making RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals claims.