MCF51MM128VLK - ColdFire V1 32-bit MCU, 128KB Flash, 50MHz | NXP
料号： MCF51MM128VLK ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
MCF51MM128VLK 概述
A microcontroller (MCU) is a single-chip embedded computer that integrates a processor core, program memory, data RAM, and peripherals such as timers, serial interfaces, and analog blocks onto one die. Within the embedded hierarchy, the MCF51MM128VLK belongs to the microcontroller class of embedded processors, specifically the 32-bit ColdFire V1 family from Freescale Semiconductor (now NXP Semiconductors), a family designed for low-cost, low-power, high-performance handheld metering devices.
Key features include 128KB (128K x 8) of Flash program memory, 32K x 8 of RAM, 47 general-purpose I/O lines, and connectivity peripherals including CANbus, EBI/EMI, I2C, SCI, and USB OTG. Integrated peripherals such as LVD (low-voltage detection), PWM, and a watchdog timer (WDT) support robust, safety-conscious embedded designs. The external oscillator type and 50MHz core speed make it suitable for deterministic control loops in metering products.
Technically, the ColdFire V1 core is a 32-bit RISC architecture derived from the 68000 legacy, offering code-compatible migration paths from 8-bit to 32-bit designs while preserving the interrupt latency and deterministic execution behavior required in metering and measurement applications. The MCF51MM series members are specifically engineered for handheld metering, where low power consumption and mixed-signal capability matter most.
Typical applications include handheld utility metering devices (electricity, water, gas), industrial data-loggers, CANbus-based industrial nodes, and USB-connected portable instruments. The USB OTG peripheral enables direct device-to-device connectivity without a host PC.
When designing with this part, verify second-source availability: the MCF51MM family is manufactured under legacy status and distributed via authorized aftermarket channels such as Rochester Electronics, so plan lifecycle strategy early in the design.
This page synthesizes distributor pricing context, drop-in alternatives within the same 80-LQFP footprint, and practical sourcing guidance not found in the manufacturer datasheet.
直接替换替代料： MCF51MM128VLK ——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： MCF51MM128VLK （相同外形与封装尺寸） ——差异在于 Package, ADC, Maximum CPU Frequency, Core, Core Processor.
快速对比工具——选择替代料号进行并排对比：
MCF51MM256VLK
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
联系询价
查看数据手册 →MCF51JE128VLK
✅ 直接替换✓ 有现货
$6.95 / 个
查看数据手册 →MCF51JE256CLK
✅ 直接替换✓ 有现货
$8.95 / 个
查看数据手册 →MCF51MM128VLK 最大额定值与电气特性
| Core Processor | ColdFire V1 |
| Core Size | 32-Bit |
| Core Clock Speed | 50 MHz |
| Program Memory Size | 128 KB (128K x 8) |
| Program Memory Type | FLASH |
| RAM Size | 32K x 8 |
| Number of I/O | 47 |
| Connectivity | CANbus, EBI/EMI, I2C, SCI, SPI, USB OTG |
| Peripherals | LVD, PWM, WDT |
| Oscillator Type | External |
| 封装 / 外壳 | 80-LQFP (12x12 mm) |
| 安装类型 | Surface Mount |
| Packaging | Tray |
| Series | MCF51MM |
| Part Status | Obsolete |
MCF51MM128VLK 80-lqfp (12x12 mm) 引脚配置指南
MCF51MM128VLK（80-lqfp (12x12 mm) 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： MCF51MM128VLK.
请参阅 数据手册 以查看完整引脚配置。
典型应用
MCF51MM128VLK 适用于 6 应用s: Handheld Utility Metering, Industrial CANbus Nodes, Portable USB Instruments, Data Loggers, Motor Control and PWM Systems, Legacy Embedded System Maintenance.
Handheld Utility Metering
The MCF51MM128VLK was purpose-built for handheld metering devices: according to the Freescale datasheet, the MCF51MM series members are designed for low-cost, low-power, high-performance handheld metering. The 50MHz ColdFire V1 core provides deterministic execution for metering accumulation algorithms, while 128KB Flash holds protocol stacks and firmware tables and the 32KB RAM buffers metering logs. USB OTG lets technicians download readings directly to a PC or service tool without opening the meter housing. The external oscillator and LVD supervision maintain accuracy and safe reset behavior across battery discharge curves, and the low-power architecture extends battery service intervals in portable field instruments.
推荐
Industrial CANbus Nodes
With an integrated CANbus controller, the MCF51MM128VLK fits industrial control and fieldbus nodes that must exchange data on a CAN network without an external CAN controller. The 50MHz 32-bit core processes protocol handling, cyclic redundancy checks, and application logic with margin, while the watchdog timer (WDT) recovers nodes from bus faults or firmware lockups - essential in unattended factory environments. The EBI/EMI external bus interface allows memory or peripheral expansion for data-intensive nodes, and 47 GPIO lines drive relays, indicators, and sensor inputs. Place the CAN transceiver close to the MCU pins with proper common-mode choke filtering to meet industrial EMC expectations.
推荐
Portable USB Instruments
The USB OTG peripheral makes the MCF51MM128VLK a strong fit for portable instruments that connect to PCs, tablets, or other embedded devices. In OTG mode the MCU switches between device and limited host roles, enabling point-to-point data transfer between two handheld units without a PC host - useful for field calibration and configuration cloning. The 128KB Flash accommodates USB enumeration descriptors plus application firmware, and the 32KB RAM supports double-buffered endpoint traffic. The SCI and SPI interfaces simultaneously link to front-end converters, so measured data can stream over USB while local control loops continue to run on the 50MHz core.
推荐
Data Loggers
Industrial and environmental data loggers benefit from the MCF51MM128VLK's combination of 32KB RAM, multiple serial ports (I2C, SPI, SCI), and low-power ColdFire V1 operation. Sensor data is time-stamped and buffered in RAM before being written to external Flash or EBI/EMI-attached storage; 128KB of on-chip Flash retains calibration constants and firmware across power cycles. The LVD peripheral warns of impending brownout so the firmware can flush buffers safely, protecting logged datasets. With 47 GPIOs, a single MCU can multiplex several sensor channels, and the I2C bus connects RTCs and nonvolatile memory for timestamped archival storage.
推荐
Motor Control and PWM Systems
The integrated PWM peripheral allows the MCF51MM128VLK to generate control waveforms for small motor drives, heaters, valve actuators, and backlight dimming in metering and portable products. The 50MHz core executes PI control loops deterministically while PWM outputs drive external power stages through gate drivers. The EBI/EMI interface supports expansion memories for position tables or profiles. Combined with the watchdog timer, firmware faults latch outputs to a safe state - a required behavior in actuator systems. Because the PWM resolution scales with the 50MHz clock, designers achieve fine duty-cycle granularity suitable for smooth low-speed motor commutation in handheld instruments.
推荐
Legacy Embedded System Maintenance
A major ongoing use of the MCF51MM128VLK is sustaining existing deployed products: utility meters, portable instruments, and CANbus nodes already designed around the ColdFire V1 MCF51MM platform. Because the part is obsolete, maintenance programs rely on aftermarket stock from Rochester Electronics and comparable distributors, plus the pin-compatible MCF51MM256VLK as a last-time-buy substitute. Firmware compatibility is preserved across the family, so replacement boards run unchanged. Procurement teams should size an end-of-life buffer order against remaining product service life and validate date-code authenticity when sourcing from the aftermarket channel.
推荐
推荐产品汇总
工程参考数据： MCF51MM128VLK ——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 | MCF51MM256VLK | MCF51JE128VLK | MCF51JE256CLK |
|---|---|---|---|---|
| Package | 80-LQFP (12x12 mm) | 80-LQFP (12x12 mm) - same | 80-LQFP - same class | 80-Pin LQFP - same class |
| Brand | NXP Semiconductors (Freescale) | NXP Semiconductors (Freescale) | NXP Semiconductors (Freescale) | NXP Semiconductors (Freescale) |
| Core | ColdFire V1, 32-bit, 50MHz | ColdFire V1, 32-bit, 50MHz | ColdFire (MCF51JE series) | ColdFire (MCF51JE series) |
| Flash Memory | 128KB (128K x 8) | 256KB | 128KB | 256KB |
关键差异点
- Purpose-built for handheld metering （对比 MCF51JE128VLK)
- Integrated USB OTG （对比 MCF51JE256CLK)
- 256KB pin-compatible upgrade path exists （对比 MCF51MM256VLK)
设计说明
The MCF51MM128VLK is an obsolete part. When sourcing from the aftermarket (Rochester Electronics and similar channels), verify date codes, packaging integrity (MSL exposure), and authenticity - obsolete-channel stock may have variable storage history. Before releasing a build, run functional firmware validation on received lots, and size a final lifetime-buy against your product's remaining service commitment rather than relying on spot-market availability.
The device uses an external oscillator, so reserve one GPIO-capable crystal circuit with correct load capacitors per the MCF51MM series hardware design guidance. Enable the LVD (low-voltage detection) peripheral so firmware can enter a safe state during supply sag instead of executing corrupted code - particularly important in battery-powered metering products where deep discharge events are routine.
The 80-LQFP (12x12 mm, 0.5 mm pitch) footprint requires standard LQFP soldering practice: maintain the manufacturer land pattern, use no-clean flux-compatible reflow profiles, and provide adequate thermal relief on power pins. Because the same package is shared across the MCF51MM family including the 256KB variant, design the PCB so the MCF51MM256VLK can be assembled without layout change - this gives a zero-redesign migration path.
合规信息
Compliance status not stated in retrieved distributor data; as an obsolete item supplied as aftermarket stock, compliance may vary by date code. Verify with Rochester Electronics or NXP for the specific lot.