Microcontroladores

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MCF51JM32EVLH - ColdFire V1 32KB Flash MCU 64-LQFP | NXP
MCF51JM32EVLH

MCF51JM32EVLH - ColdFire V1 32KB Flash MCU 64-LQFP | NXP

The NXP MCF51JM32EVLH is a ColdFire V1 32-bit RISC microcontroller integrating 32KB of Flash, 16KB of RAM, and a full-speed USB OTG controller in a 64-pin LQFP (10x10 mm) package. It is part of the MCF51JM family and runs at up to 50MHz, providing deterministic interrupt handling for industrial and embedded USB peripherals. A microcontroller (MCU) is a single-chip computer that contains a processor core, program and data memory, and programmable I/O peripherals. The ColdFire V1 core is a 32-bit variable-length RISC architecture derived from the original 68000 instruction set, optimized for embedded control. Within the broader taxonomy, the MCF51JM32EVLH sits as: microcontroller -> 32-bit MCU -> ColdFire V1 MCU -> USB-enabled MCU -> industrial control MCU. This ultra-low-power heritage makes it well suited for cost-sensitive industrial and consumer designs that need USB connectivity without a dedicated PHY. Key features include 32KB of on-chip Flash program memory, 16KB of SRAM, 51 general-purpose I/O pins, and an integrated USB On-The-Go (OTG) full-speed controller with on-chip transceiver - eliminating the need for an external USB PHY. Communication peripherals include one CAN module, I2C, SCI (UART), and SPI. The device also integrates a low-voltage detect (LVD) circuit, PWM timers, and a watchdog timer for robust operation in noisy industrial environments. The ColdFire V1 core uses a 2-stage pipeline and VBR (vector base register) interrupt structure that simplifies deterministic real-time response. The integrated USB OTG controller supports host, device, and On-The-Go roles, with dedicated DMA channels that offload packet handling from the core. The 64-LQFP (10x10 mm) package exposes all peripherals with no internal multiplexing conflicts, supporting JTAG/BDM debug. Typical applications include USB HID peripherals, industrial CAN-to-USB bridges, point-of-sale terminals, USB barcode scanners, low-cost human-interface devices, and embedded data loggers. The combination of USB OTG and CAN is rare at this price point, making the part attractive for industrial gateways. When designing with this device, allocate a 1.5kB USB stack in Flash and reserve the dedicated USB VBUS/VREG pins for proper OTG operation. The part is no longer recommended for new designs (NRND) - check NXP lifecycle notices before committing to long-production designs.

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MCF51JM32EVLK - 32KB Flash ColdFire V1 MCU | NXP | USB & CAN
MCF51JM32EVLK

MCF51JM32EVLK - 32KB Flash ColdFire V1 MCU | NXP | USB & CAN

The NXP MCF51JM32EVLK is a 32-bit ColdFire V1 RISC microcontroller featuring 32KB Flash, 16KB SRAM, and integrated USB On-The-Go (OTG) plus CAN connectivity, packaged in an 80-pin LQFP (14x14 mm). It operates up to 50 MHz from a 3.3V or 5V supply, providing 66 general-purpose I/O lines, PWM, LVD, and a watchdog timer. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (SRAM), and peripheral interfaces into one device. The MCF51JM32 belongs to the 32-bit ColdFire family, which sits in the hierarchy of embedded microcontrollers (MCU -> 32-bit MCU -> ColdFire architecture -> industrial/consumer-grade MCU -> semiconductor IC). ColdFire V1 combines a RISC instruction set with the Freescale/NXP peripheral ecosystem, easing migration from legacy HC08/HCS08 designs. Key differentiating features include the integrated USB OTG controller with on-chip transceiver - eliminating external PHY chips for low- and full-speed USB designs - and a CAN 2.0A/B-compliant controller targeting industrial networking. The 50 MHz core delivers 50 MIPS, with hardware multiply/accumulate and a background debug controller for non-intrusive in-circuit development. The architecture combines a ColdFire V1 core with crossbar switch, 32KB program Flash, 16KB SRAM, and a versatile peripheral set: SCI, SPI, I2C, PWM (6 channels), 12-bit ADC (8-ch), and a real-time counter. The on-chip voltage regulator supports 2.7V-5.5V single-supply operation with internal 1.8V core regulation, simplifying board design. Typical applications include USB peripherals, CAN-based industrial nodes, point-of-sale terminals, medical monitoring devices, and USB-CAN bridges. The integrated USB OTG makes the part a strong fit for HID devices, CDC virtual COM ports, and firmware upgrade dongles. When designing with this part, ensure the USB DP/DM traces are 90-ohm differential with a common-mode choke nearby; route the 12 MHz crystal traces short and guard them with a ground ring to meet USB compliance. The internal regulator requires a 1uF decoupling capacitor on the VDDINT pin.

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MCF51JM32VLK - 50.33 MHz 32-Bit ColdFire MCU | NXP
MCF51JM32VLK

MCF51JM32VLK - 50.33 MHz 32-Bit ColdFire MCU | NXP

The NXP MCF51JM32VLK is a 32-bit single-core ColdFire V1 microcontroller rated up to 50 MHz, with 32 KB of flash and 16 KB of RAM in an 80-LQFP 14 mm × 14 mm package. It operates across a 2.7 V to 5.5 V supply range and supports an industrial temperature range of -40°C to +105°C. The VLK ordering code identifies the 80-LQFP package, while the family is positioned for embedded control applications requiring compatibility with common S08 and ColdFire peripherals and development tools. A microcontroller is a programmable system-on-chip that combines a processor core, memory, and peripherals such as timers, serial interfaces, analog inputs, communication modules, and interrupt controllers. The MCF51JM32VLK belongs to the ColdFire V1 microcontroller hierarchy and uses 32-bit RISC-style processing for embedded control. Its Flexis family context is important because the devices share peripherals and tools with related S08 products, supporting migration paths between 8-bit and 32-bit designs. The part provides 32 KB of flash for program storage and 16 KB of RAM for working data. Its flash memory is specified for read, program, and erase operation over the full operating voltage and temperature range. The 50 MHz maximum frequency provides processing headroom for protocol handling, control loops, and system coordination, while the 80-LQFP package exposes the device's integrated peripheral and I/O resources through 80 terminals. The MCF51JM family includes four security circuits according to the retrieved technical data, but individual security-feature details and exact peripheral mappings were not provided in the verified snippets. Applications can use the MCU for industrial control, embedded communication, sensor monitoring, and compact embedded systems. Firmware developers should confirm the complete peripheral list, pin multiplexing, clock configuration, memory map, and electrical limits in the official NXP documentation before schematic capture. For PCB design, reserve all 80 package lands, connect the required power and ground pins according to the official pinout, and route decoupling close to the device. The 2.7 V to 5.5 V range allows integration with common embedded supply rails, but clock, reset, analog, and interface voltage constraints must still be checked. This page distinguishes verified catalog values from parameters requiring confirmation from the complete manufacturer datasheet.

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MCF51JM32VQH - 32-Bit 50MHz ColdFire MCU, 32KB Flash | NXP
MCF51JM32VQH

MCF51JM32VQH - 32-Bit 50MHz ColdFire MCU, 32KB Flash | NXP

The NXP Semiconductors MCF51JM32VQH is a 32-bit ColdFire V1 reduced-instruction-set-computing microcontroller with a 50 MHz maximum frequency, 32 KB flash memory, 16 KB RAM, and a 64-pin QFP package measuring 14 mm by 14 mm. The device is associated with the MCF51JM series and supports 3.3 V and 5 V supply configurations shown in the verified product data. Its 32-bit architecture, embedded flash, and integrated peripherals make it suitable for embedded control systems requiring more processing capability than an 8-bit microcontroller while retaining a straightforward peripheral-oriented design. A microcontroller is a compact integrated circuit containing a processor core, memory, and peripherals for controlling a specific embedded system. The MCF51JM belongs to the ColdFire family of 32-bit RISC microprocessors and is positioned within NXP's Flexis MCU ecosystem. The Flexis approach links compatible 8-bit S08 and 32-bit ColdFire V1 families through shared peripherals and development tools, helping designers migrate designs while adapting software and pin requirements to the selected device. The verified specifications identify a 32-bit data bus, ColdFire V1 core, 50 MHz operating frequency, 32 KB flash organized as 32K x 8, and 16 KB RAM. The 64-QFP package provides 64 external pins and a 14 mm by 14 mm body. The supplied product information does not specify the complete peripheral list, GPIO count, supply-voltage minimum and maximum, operating-temperature range, or package thermal resistance, so those values remain marked for data completion rather than being inferred. MCF51JM devices are used for embedded-control and peripheral-coordination functions. Potential designs include industrial controllers, communication equipment, data-acquisition systems, and compact motor or machine-control products when the firmware and board requirements match the MCF51JM peripheral configuration. The 32-bit core and 50 MHz frequency support more demanding control logic than an 8-bit MCU, while the integrated flash and RAM allow firmware and working data to reside locally in the system. When designing around the MCF51JM32VQH, verify the exact pin assignments, alternate-function multiplexing, clock configuration, memory organization, and electrical limits against the manufacturer datasheet before PCB routing. Because the MCU is marked End of Life by the NXP product page, new production decisions should include a lifecycle review, availability check, and confirmation of any approved successor or redesign path rather than assuming long-term supply. This page combines the verified manufacturer and distributor specifications, lifecycle information, package details, practical sourcing guidance, and documented data gaps. It is intended to support engineering comparison and procurement review while avoiding unsupported claims about electrical limits, peripheral compatibility, or replacement parts.

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MCF51JM64EVLD - Coldfire V1 32-bit MCU 64KB Flash 50MHz | NXP
MCF51JM64EVLD

MCF51JM64EVLD - Coldfire V1 32-bit MCU 64KB Flash 50MHz | NXP

The NXP MCF51JM64EVLD is a Coldfire V1 (MCF51JM) 32-bit microcontroller with 64KB of on-chip FLASH, 50 MHz core speed, and integrated USB OTG, offered in a 44-pin LQFP (10x10 mm) package. It is part of NXP's Freescale legacy Coldfire + USB family targeting cost-sensitive embedded applications requiring host/device USB connectivity. A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory (FLASH), data memory (RAM), and integrated peripherals such as timers, ADCs, and communication interfaces. The MCF51JM series combines a Coldfire V1 core (a 32-bit variable-length RISC architecture derived from the original Motorola Coldfire) with a USB On-The-Go controller, occupying the role of low-cost USB-capable microcontroller in NXP's broader Coldfire hierarchy (Coldfire V1 -> Coldfire -> 32-bit MCU -> embedded processor -> semiconductor). This positioning makes it a frequent choice for USB peripherals, HID devices, and low-throughput human-interface equipment. Key features of the MCF51JM64EVLD include 64KB (64K x 8) program FLASH, 16KB SRAM, 50 MHz maximum CPU clock, USB OTG full-speed controller, and a peripheral set spanning SCI (UART), SPI, I2C, PWM, LVD (low-voltage detect), and WDT (watchdog timer). The device exposes 33 general-purpose I/O pins and supports industrial temperature operation. The integrated USB OTG PHY eliminates the need for an external transceiver for full-speed (12 Mbps) USB applications. Typical applications include USB HID peripherals (keyboards, mice, game controllers), USB-to-UART bridges, low-cost data loggers, industrial point-of-sale terminals, and educational/development boards where the combination of USB device/host capability and a familiar Coldfire toolchain (CodeWarrior, Eclipse-based GCC) reduces time-to-market. When designing with this device, verify power-rail decoupling (100 nF + 4.7 uF near VDD pins) and place the USB D+/D- traces as a 90-ohm differential pair routed directly to the connector. The internal USB regulator must be configured per the reference manual when using bus-powered designs.

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MCF51JM64EVLK - 32-Bit 50MHz ColdFire MCU | NXP
MCF51JM64EVLK

MCF51JM64EVLK - 32-Bit 50MHz ColdFire MCU | NXP

NXP MCF51JM64EVLK is a 32-bit ColdFire V1 microcontroller rated at 50 MHz, with 64 KB of Flash memory and an 80-pin LQFP package. The verified distributor data also identifies 8 KB of RAM, 66 I/O, and connectivity including CANbus, I2C, SCI, SPI, and USB OTG. It is the EVLK temperature/package variant for the MCF51JM family, a Flexis-series MCU intended to bridge 8-bit S08 designs and 32-bit ColdFire software ecosystems. A ColdFire microcontroller is a 32-bit RISC processor integrated with memory, communication peripherals, timers, and digital I/O. It belongs to the MCU hierarchy: embedded microcontroller, RISC processor, ColdFire V1 core, and Flexis MCU family. The MCF51JM series combines 32-bit processing with peripherals familiar from the S08 family, supporting migration between 8-bit and 32-bit designs while retaining a common development approach. Verified features include a 50 MHz operating speed, 64 KB programmable Flash, 8 KB RAM, 66 I/O, CANbus, I2C, SCI, SPI, and USB OTG. The part also includes LVD, PWM, and WDT peripherals according to the available product data. Its 80-lead square LQFP package provides enough external connections for industrial-control designs that need multiple serial interfaces and discrete digital inputs or outputs. The ColdFire V1 core executes 32-bit RISC instructions, while the integrated communication peripherals connect the MCU to sensors, actuators, and host systems. CANbus supports networked industrial equipment, SPI and I2C support peripheral expansion, SCI supports serial communication, and USB OTG adds a host or device-oriented USB path. The 64 KB Flash provides program storage, while the reported 8 KB RAM supports working memory and data buffering. Typical applications include industrial controllers, building automation equipment, motor-control supervisory systems, communication gateways, data-acquisition units, and USB-connected embedded peripherals. The combination of CANbus, serial interfaces, USB OTG, PWM, watchdog, and low-voltage detection makes the device suitable for equipment requiring both control and communications. Designers should verify the exact pin multiplexing, electrical limits, clock configuration, memory map, and peripheral assignment against the MCF51JM datasheet before layout or firmware commitment. Because the available verified data identifies the part as end-of-life, new production designs should confirm availability and consider an explicitly approved redesign rather than assuming ongoing supply.

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MCF51JM64EVQH - ColdFire V1 32-bit MCU 50MHz 64KB Flash | NXP
MCF51JM64EVQH

MCF51JM64EVQH - ColdFire V1 32-bit MCU 50MHz 64KB Flash | NXP

The NXP MCF51JM64EVQH is a 32-bit ColdFire V1 microcontroller operating at 50 MHz with 64 KB of Flash program memory and 16 KB of RAM, housed in a 64-pin QFP (14 x 14 mm) package. It belongs to the MCF51JM family originally developed by Freescale Semiconductor and now supplied by NXP Semiconductors, and it supports both 3.3 V and 5 V operating supplies. A microcontroller (MCU) is a single integrated circuit that combines a processor core, program memory, data memory, and peripheral functions such as timers, serial interfaces, and analog blocks into one chip. Microcontrollers sit at the heart of embedded systems, controlling everything from consumer appliances to industrial automation equipment. The ColdFire V1 architecture is a 32-bit instruction-set-compatible member of the broader ColdFire microprocessor family, offering an upgrade path from 8-bit MCUs to 32-bit performance without a steep software learning curve. Key features of the MCF51JM64EVQH include the 50 MHz ColdFire V1 RISC core, 64 KB of on-chip Flash organized as 64K x 8, and 16 KB of RAM for data and stack. The dual-supply capability of 3.3 V and 5 V simplifies integration into both legacy 5 V industrial designs and modern 3.3 V systems. The 64-QFP 14 x 14 mm package provides a good balance of I/O count and board area for medium-complexity embedded designs. The JM sub-family integrates USB connectivity alongside standard serial peripherals, positioning it for human interface devices, USB-to-serial bridging, and control panels. The ColdFire V1 core executes compact 32-bit code with deterministic behavior suited to control-loop and communication tasks. Typical applications include USB-enabled industrial controllers, consumer appliance interfaces, motor control panels, and test equipment front ends. A key design consideration is supply selection: operating at 5 V improves noise margin in industrial environments, while 3.3 V operation reduces power dissipation; verify Flash programming and peripheral timing margins at the chosen supply. This page consolidates distributor pricing tiers, drop-in alternatives, and practical design guidance not found in the manufacturer datasheet alone.

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MCF51JM64VLH - 32-bit ColdFire V1 MCU 64KB Flash | NXP
MCF51JM64VLH

MCF51JM64VLH - 32-bit ColdFire V1 MCU 64KB Flash | NXP

The NXP MCF51JM64VLH is a 32-bit ColdFire V1 microcontroller from the Flexis MCF51JM family, featuring 64KB of Flash memory and 8KB of SRAM in a 64-pin LQFP (10x10 mm) package. The ColdFire V1 core runs at up to 50 MHz and targets applications where 8-bit MCU performance is insufficient but full 32-bit complexity and cost are not justified. The Flexis series is NXP's bridge between the legacy 8-bit S08 architecture and the 32-bit ColdFire V1, with shared peripherals and development tools for seamless migration. A microcontroller (MCU) is a single-chip computer that integrates a processor core, program memory (Flash), data memory (RAM), and programmable peripherals on one die. The ColdFire V1 core is a 32-bit reduced instruction set computing (RISC) architecture introduced by Freescale (now NXP) as a low-cost derivative of the original ColdFire V2. Compared with 8-bit MCUs, a 32-bit ColdFire V1 device provides higher arithmetic throughput and a wider address space while preserving deterministic interrupt behaviour suited to embedded control. Key features of the MCF51JM64VLH include 64KB of on-chip Flash program memory, 8KB of SRAM, an integrated USB 2.0 full-speed device controller, a CAN (Controller Area Network) interface, multiple serial communication modules (SCI, SPI, I2C), a 16-channel 12-bit ADC, timers including PWM and input-capture channels, and a real-time counter with a separate backup power domain. The 64-pin LQFP package exposes multiple GPIO lines and provides sufficient I/O for typical industrial and consumer peripherals. Typical applications for the MCF51JM64VLH include USB-to-UART bridges, low-cost industrial control nodes with CAN connectivity, building automation controllers (thermostats, security panels), human-interface devices (HID) such as custom keyboards and barcode scanners, and consumer appliances requiring a small RTOS-aware 32-bit core. The integrated USB controller makes the device particularly attractive for embedded nodes that must enumerate as a USB device without an external PHY. When designing with this part, verify the supply voltage range against the specific datasheet revision, since the Flexis family traditionally supports 2.7 V to 5.5 V operation. The 64-pin LQFP uses a 0.5 mm pitch which is hand-solderable but requires a PCB with fine-pitch land pattern. For new designs a similar but more recent Kinetis E or Kinetis KE series device is often preferred; the MCF51JM64VLH is primarily a legacy / last-time-buy option.

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MCF51JM64VLK - ColdFire V1 50MHz MCU, 64KB Flash, USB | NXP
MCF51JM64VLK

MCF51JM64VLK - ColdFire V1 50MHz MCU, 64KB Flash, USB | NXP

The NXP MCF51JM64VLK is a 32-bit ColdFire V1 microcontroller with 64KB Flash, 50MHz core speed, integrated USB OTG, and 66 I/O pins housed in an 80-pin LQFP (14x14) package. As a member of NXP's Flexis series, it is pin-compatible with the 8-bit S08 family, enabling a migration path between 8-bit and 32-bit performance without hardware redesign. A microcontroller (MCU) is an integrated circuit containing a processor core, program memory, RAM, and a set of on-chip peripherals. Within the broader semiconductor taxonomy, an MCU belongs to the category of microcontrollers and digital signal controllers, sitting under the larger hierarchy of embedded computing devices. ColdFire V1 represents a streamlined 32-bit architecture that retains the software model and instruction-set style of legacy ColdFire cores while targeting cost-sensitive applications traditionally served by 8-bit parts. Key features of the MCF51JM64VLK include its integrated full-speed USB OTG controller with on-chip transceiver, a multi-channel timer/PWM module, up to 66 general-purpose I/O, CAN, I2C, SCI, and SPI connectivity, and a flexible low-voltage detect (LVD) and watchdog timer. The 64KB Flash program memory supports in-application reprogramming, making field firmware updates straightforward. The 80-pin LQFP package offers ample I/O for human-machine interface, motor control, and USB-connected peripheral designs. The MCF51JM64VLK is built on a 3.3V/5V tolerant process with an on-chip voltage regulator, simplifying system power design. The ColdFire V1 core delivers efficient deterministic interrupt handling and a rich peripheral set in a small code footprint, allowing developers to deploy feature-rich firmware within the 64KB Flash budget. Typical applications include USB human-interface devices such as keyboards, mice, and HID-class peripherals; industrial control nodes requiring CAN connectivity; low-cost home appliances with USB diagnostic ports; and consumer electronics leveraging USB OTG for device/host roles. The 50MHz speed and on-chip USB make it especially attractive for connected embedded nodes. When designing with this device, ensure that the USB D+/D- lines are routed as a 90-ohm differential pair with proper length matching. Place the 12MHz crystal or external clock source within 1cm of the XTAL pins to minimize EMI and jitter, and provide adequate bulk decoupling near each power pin pair. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, helping engineers select, source, and integrate the MCF51JM64VLK into USB-enabled embedded designs.

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MCF51JM64VQH - ColdFire V1 32-bit MCU, 64KB Flash, 50MHz | NXP
MCF51JM64VQH

MCF51JM64VQH - ColdFire V1 32-bit MCU, 64KB Flash, 50MHz | NXP

The NXP MCF51JM64VQH is a ColdFire V1 MCF51JM microcontroller delivering 50 MHz core performance, 64 KB of on-chip flash, and 8 KB of SRAM in a 64-pin LQFP package (14×14 mm). The MCF51JM family belongs to NXP's Flexis controller continuum where 32-bit ColdFire V1 and 8-bit S08 MCUs share peripheral sets for seamless migration. A microcontroller (MCU) is a single-chip computer integrating a CPU core, program and data memory, peripherals, and I/O. ColdFire V1 is a 32-bit reduced instruction set computing (RISC) architecture derived from the original ColdFire family, optimized for embedded deterministic control with small code size and low power. Within the broader semiconductor taxonomy, the MCF51JM64 belongs to the microcontrollers hierarchy (microcontroller -> 32-bit MCU -> embedded processor -> semiconductor IC). The Flexis positioning is significant: a designer can prototype on a JM device and migrate to an S08 pin-compatible MCU without a full PCB redesign. Key specifications include a 32-bit ColdFire V1 core at 50 MHz, 64 KB flash program memory, 8 KB SRAM, an 8-channel 12-bit ADC, timers (including PWM channels), SPI, I²C, and UART communication peripherals, plus a USB 2.0 Full-Speed (12 Mbps) device/host/on-the-go controller. The 64-pin LQFP package supports industrial-grade -40°C to +105°C operation. The integrated USB controller with on-chip transceiver eliminates external PHY requirements for many USB device applications. Architecturally, the MCF51JM64 uses a Harvard-oriented ColdFire V1 core with a single-cycle 32-bit ALU, hardware multiply/accumulate, and a tightly-coupled peripheral bus. The Flexis shared-peripheral philosophy with the S08 family means the same peripheral IP blocks (ADC, timers, communications modules) appear on both families, allowing identical firmware drivers across 8-bit and 32-bit performance tiers. Typical applications include industrial control and sensor conditioning, building automation and HVAC controllers, USB peripherals such as HID-class human-interface devices, low-end medical instruments, consumer electronics requiring a USB device interface, and small-form-factor embedded control boards. The integrated USB 2.0 FS OTG controller also makes the part suitable for point-of-sale terminals and cable replacement use cases. Designers should note that the MCF51JM family is being maintained primarily for legacy and industrial embedded designs, and lifecycle support should be confirmed against the latest NXP product change notifications. When planning new designs, evaluate the MCF51JM128 (128 KB flash) or Kinetis E series as longer-term alternatives while keeping the JM family in scope for proven, qualified, and stable code reuse. This page synthesizes distributor pricing, parametric comparison, and Flexis migration notes not found in the manufacturer datasheet alone.

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MCF51JU32VHS - 50MHz 32KB Flash MCU | NXP | Embedded
MCF51JU32VHS

MCF51JU32VHS - 50MHz 32KB Flash MCU | NXP | Embedded

NXP Semiconductors MCF51JU32VHS is a 32-bit ColdFire V1 microcontroller operating at 50 MHz, with 32 KB of Flash and USB device and analog capabilities, housed in a 44-MAPLGA package. The device targets low-power embedded applications and consumer electronics. A microcontroller is a semiconductor device that integrates a processor core, memory, peripherals, and communication interfaces into one compact component. Within the product hierarchy, the MCF51JU32VHS belongs to the MCF51Jx microcontroller family and uses the ColdFire V1 architecture. This integration allows embedded systems to execute firmware, acquire analog signals, control external hardware, and communicate with USB devices without requiring several separate discrete components. The verified product information identifies a 32-bit architecture, 50 MHz operating frequency, 32 KB Flash, USB device support, and analog capabilities. Its 44-MAPLGA package provides a compact surface-mount solution for space-constrained designs. The NXP product page identifies the part as active, while distributor listings provide availability, pricing, package, and ordering information. The ColdFire V1 core is intended for embedded control workloads where a 32-bit processor and integrated peripherals can simplify system design. Flash memory stores program code, while the USB device interface can support connected control, configuration, or data-transfer functions. Analog capabilities broaden the device’s usefulness for products that need to interface with sensors or other continuous signals. Typical applications include USB-connected consumer devices, low-power embedded control systems, IoT endpoint controllers, compact instrumentation, and industrial products with a small environmental or industrial temperature-grade requirement. Designers should confirm voltage limits, pin functions, clock requirements, memory-map details, USB electrical requirements, and exposed-pad layout from the official NXP datasheet before releasing a PCB. For a new layout, place required decoupling capacitors close to the supply pins, route sensitive analog and USB signals away from noisy switching paths, and follow the manufacturer’s exposed-pad land pattern. The verified data does not include complete pin names, electrical ratings, or detailed memory organization, so those items must be obtained from the manufacturer datasheet. This product page combines the verified NXP overview, distributor package information, and cross-reference results with engineering guidance for embedded-product evaluation. It is intended to help engineers identify the MCU, assess its core and memory, and plan validation before procurement or PCB release.

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MCF51JU64VHS - 32-bit ColdFire V1 MCU 64KB 50MHz | NXP
MCF51JU64VHS

MCF51JU64VHS - 32-bit ColdFire V1 MCU 64KB 50MHz | NXP

The NXP Semiconductors MCF51JU64VHS is a 32-bit microcontroller based on the ColdFire V1 core, operating at up to 50 MHz with 64 KB of flash memory, in a 44-terminal MAPLGA (5x5 mm) package. It belongs to the ColdFire+ MCF51Jx portfolio, which scales from 32 KB to 256 KB of flash and features FlexMemory configurable embedded EEPROM. A microcontroller (MCU) is a single integrated circuit that combines a processor core, memory, and programmable peripherals into one chip, sitting within the broader hierarchy of embedded processors above bare logic ICs and below full application processors. The MCF51JU64VHS targets embedded control designs that need USB device connectivity and mixed-signal peripherals on a low-pin-count footprint. Key features include a 50 MHz V1 ColdFire core, 64 KB (64K x 8) on-chip flash, voltage operation from 1.71 V to 3.6 V, and an industrial ambient temperature range of -40 C to +105 C. The integrated 12-bit SAR ADC, 12-bit DAC, and analog comparator containing a 6-bit DAC reduce external component count in measurement and control loops. FlexMemory provides configurable embedded EEPROM for data retention without external nonvolatile memory. The ColdFire+ architecture shares a common peripheral set across the MCF51JF, MCF51JU, MCF51QF, MCF51QU, MCF51QH, and MCF51QM families, all of which NXP states are software and pin compatible, maximizing code reuse and shortening development time. Flash write operation is supported across the full 1.71 V to 3.6 V supply range, and the USB module enables device-mode connectivity for HID, CDC, and custom class applications. Typical applications include USB-connected industrial sensors and instrumentation, battery-powered portable devices leveraging the 1.71 V minimum supply, and analog front-end control systems using the 12-bit ADC and DAC combination. The 5x5 mm 44-MAPLGA package suits space-constrained two- and four-layer PCB designs. Designers should note the industrial temperature ceiling of +105 C, which covers most embedded environments but excludes some automotive under-hood positions. Flash write across the full voltage range simplifies battery designs where the rail sags near end of charge. This page synthesizes distributor availability data, the NXP family compatibility statements, and practical drop-in replacement analysis not consolidated on the manufacturer product page.

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MCF51MM128CLK - 32-bit ColdFire V1 MCU, 128KB Flash | NXP
MCF51MM128CLK

MCF51MM128CLK - 32-bit ColdFire V1 MCU, 128KB Flash | NXP

The NXP MCF51MM128CLK is a 32-bit ColdFire V1 microcontroller with 128KB Flash, 50MHz core speed, and an 80-FQFP (12x12) package designed for low-power, high-performance embedded applications. It is a member of the MCF51MM256/128 family targeting ultra-low-power operation, USB connectivity, graphic display support, and high-accuracy measurement in a single 32-bit MCU. A microcontroller (MCU) is a compact integrated circuit containing a processor core, volatile and non-volatile memory, and programmable peripherals designed to execute embedded control firmware. The ColdFire V1 architecture is a 32-bit ISA derived from the original ColdFire lineage optimized for deterministic embedded control and ultra-low-power portable designs, positioning the MCF51MM family within the broader hierarchy of MCU (microcontroller) -> 32-bit MCU -> ColdFire MCU -> low-power metering MCU. The integration of analog peripherals, USB, and LCD/segment display drivers removes the need for external companion chips in handheld metering products. The MCF51MM128CLK integrates 128KB of on-chip Flash, 16KB SRAM, a USB 2.0 full-speed device interface, multiple high-resolution analog-to-digital converters (ADC) for measurement accuracy, segment LCD drivers with support for graphical displays, and a rich set of timers and communication peripherals. The 50.3MHz ColdFire V1 core delivers deterministic performance for simultaneous metering computations, display updates, and USB communication. An integrated voltage regulator supports 2.5V/3.3V operation from a single supply. Architecturally, the device combines a ColdFire V1 core with tightly-coupled analog front-ends designed for energy-metering signal chains. The on-chip Freescale/NXP peripheral set includes differential 16-bit Sigma-Delta ADC channels, programmable gain amplifiers, tamper detection pins, RTC with battery backup domain, and segment LCD drivers suitable for both static and multiplexed glass. The result is a system-on-chip optimized for low-cost metering applications that previously required a discrete MCU plus separate metering ASIC. Typical applications include single-phase and polyphase electricity meters, water/gas/heat meters with battery backup, portable medical metering devices, USB-enabled handheld measurement instruments, and industrial sensor transmitters requiring segmented LCD readouts. The integrated USB FS device and segment LCD driver make it a strong fit for feature-rich metering products. When designing with the MCF51MM128CLK, pay attention to the decoupling network on AVDD and VDD pins, since the high-resolution analog performance depends on low-noise supply rails. Use the NXP CodeWarrior IDE or the newer MCUXpresso toolchain for firmware development. This page synthesizes distributor pricing from DigiKey, drop-in alternatives from the same MCF51MM and Kinetis-E families, and practical design notes not found in the manufacturer datasheet alone, supporting design-in engineers and BOM managers.

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MCF51MM128CMB - 32-bit ColdFire V1 MCU, 50MHz, 128KB Flash | NXP
MCF51MM128CMB

MCF51MM128CMB - 32-bit ColdFire V1 MCU, 50MHz, 128KB Flash | NXP

The NXP (formerly Freescale) MCF51MM128CMB is a 32-bit ColdFire V1 microcontroller in the MCF51MM family, integrating 128 KB of on-chip Flash and 32 KB of SRAM in an 81-pin MAP-BGA (10x10 mm) package. It runs at up to 50 MHz and is built around the variable-length ColdFire V1 RISC core, a low-power 32-bit architecture optimized for handheld metering and cost-sensitive industrial applications. The device offers 48 programmable I/O lines, an external oscillator input, and a wide range of analog and digital peripherals for measurement, display, and connectivity. A microcontroller (MCU) is an integrated circuit that combines a CPU, memory, and programmable I/O peripherals on a single die, allowing embedded systems to sense, compute, and actuate in real time. The MCF51MM family belongs to the broader 32-bit ColdFire hierarchy (ColdFire V1 -> ColdFire -> Freescale/NXP 32-bit MCU -> microcontroller -> embedded IC) and is positioned for ultra-low-power, mixed-signal applications. Compared with traditional 8-bit MCUs, the ColdFire V1 brings 32-bit arithmetic performance at modest power and code-size cost, while preserving deterministic interrupt behavior. Key specifications include 128 KB (128K x 8) of embedded Flash, 32 KB of SRAM, a 50 MHz maximum CPU clock, and 48 user I/O pins. The 81-MAPBGA is a 10x10 mm laminate-based BGA that supports dense PCB escape routing for high-I/O, compact meter designs. Operating voltage is typically 2.5 V to 3.3 V, with the part offered in tray packaging for production assembly lines. The integrated ColdFire V1 core, USB device support, and on-chip analog peripherals remove the need for many external components. The MCF51MM128CMB is designed for ultra-low-power operation with multiple Stop and Wait modes that reduce quiescent current during metrology idle periods. The 32-bit datapath handles fractional arithmetic commonly used in metering DSP routines (RMS, power factor, energy accumulation) without firmware overload. An internal oscillator infrastructure and an external oscillator option provide the clocking flexibility needed across metering, industrial, and consumer-grade design platforms. Typical applications include single-phase and multi-phase electricity meters, smart e-meters with LCD/LED display, portable data loggers, low-cost industrial controllers, and USB-tethered measurement accessories. The combination of low power, mixed-signal integration, and a 50 MHz ColdFire V1 core is well suited to handheld metering designs that require both metrology accuracy and a human-machine interface. When integrating the MCF51MM128CMB, follow reference design decoupling: at minimum a 0.1 µF ceramic and a bulk capacitor on each VDD/VBAT rail, placed as close to the BGA balls as the breakout allows. Because this is a BGA package, use a 4-layer PCB stack-up with via-in-pad or microvia fan-out for proper thermal relief and signal escape; keep analog routing short to avoid injecting noise into measurement ADC inputs. Respect the soldering profile for moisture-sensitive MSL-level handling per the manufacturer datasheet. This page consolidates distributor pricing, drop-in same-family alternatives, and practical PCB layout guidance not assembled in the manufacturer datasheet.

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MCF51MM128VLK - ColdFire V1 32-bit MCU, 128KB Flash, 50MHz | NXP
MCF51MM128VLK

MCF51MM128VLK - ColdFire V1 32-bit MCU, 128KB Flash, 50MHz | NXP

The NXP (Freescale Semiconductor) MCF51MM128VLK is a 32-bit ColdFire V1 microcontroller with 128KB Flash program memory, 32KB RAM, and a 50MHz core clock, housed in an 80-pin LQFP (12x12 mm) surface-mount package. 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.

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MCF51MM128VMB - 32-Bit 50MHz 128KB Flash MCU | NXP | MAPBGA-81
MCF51MM128VMB

MCF51MM128VMB - 32-Bit 50MHz 128KB Flash MCU | NXP | MAPBGA-81

The NXP MCF51MM128VMB is a 32-bit ColdFire V1 microcontroller rated at 50 MHz, with 128 KB of Flash program memory and 48 I/O, supplied in an 81-ball MAPBGA package measuring 10 mm by 10 mm. The device integrates CANbus, USB OTG, EBI/EMI, I2C, SCI, SPI, PWM, low-voltage detection, and a watchdog timer, creating a feature-rich platform for embedded control, measurement, communications, and graphical-display products. What is a 32-bit microcontroller? A microcontroller is a semiconductor that combines a processor core, program memory, data memory, and peripherals on one integrated circuit. The MCF51MM128VMB belongs to the ColdFire MCU family and uses the ColdFire V1 processor core. Its position within the hierarchy is microcontroller -> embedded processor -> 32-bit MCU -> ColdFire V1 MCU. This integration lets a compact control system handle communications, analog measurement support, display interfaces, and real-time control without several separate ICs. The principal verified characteristics are a 50 MHz ColdFire V1 core, 128 KB Flash organized as 128K x 8, 48 I/O, and an 81-ball MAPBGA package. Verified listings also identify CANbus, USB OTG, EBI/EMI, I2C, SCI, SPI, PWM, low-voltage detection, and watchdog peripherals. The MCF51MM family is described as supporting ultra-low-power operation, USB connectivity, graphical-display support, and high measurement accuracy in a single 32-bit MCU. The part operates from 2.5 V or 3.3 V according to the available product summary, while exact RAM capacity, flash endurance, ADC details, temperature limits, and individual peripheral electrical limits are not provided in the verified records. Consequently, those parameters remain unresolved rather than being inferred. One distributor identifies a 50.3 MHz device in its product title, but the primary verified distributor specification is 50 MHz; the more specific figure should therefore be confirmed against the manufacturer documentation before use in timing budgets. Typical applications include industrial data acquisition, USB-connected instruments, CAN-enabled control nodes, human-machine interfaces, and compact measurement products. Its USB OTG and serial interfaces suit service ports and configuration links, while CANbus supports communication in industrial equipment. The 10 mm by 10 mm BGA also demands fine-pitch PCB design, careful ball-layout review, adequate escape routing, and assembly-process control. For new designs, verify the exact pin multiplexing, power architecture, memory map, startup behavior, and peripheral limitations in the manufacturer documentation before schematic capture. Do not substitute another package or a merely functional microcontroller; board-level compatibility requires the same 81-ball footprint, pin functions, voltage requirements, and firmware assumptions. Procurement should also confirm lifecycle status and production availability from the manufacturer. This page consolidates verified distributor specifications, sourcing information, application guidance, and design cautions into one engineering-focused reference. It distinguishes documented facts from missing parameters and avoids presenting unverified electrical or lifecycle claims as production specifications.

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MCF51MM256CLK - 50MHz 32-Bit MCU 256KB Flash | NXP
MCF51MM256CLK

MCF51MM256CLK - 50MHz 32-Bit MCU 256KB Flash | NXP

NXP MCF51MM256CLK is a ColdFire V1 32-bit microcontroller operating at 50 MHz, with 256 KB of flash memory and an 80-LQFP 12 x 12 mm package. The device combines USB connectivity, precision analog measurement capability, ultra-low-power operation, and graphic-display support in one MCU. It is positioned for embedded products requiring more processing capability than an 8-bit or 16-bit MCU while retaining a conventional embedded-control architecture. The ColdFire V1 MCU is a member of the 32-bit microcontroller hierarchy: MCU, embedded processor, ColdFire architecture, and semiconductor. Its 50 MHz core provides deterministic control performance for meters, industrial equipment, medical instruments, human-interface systems, and connected products. The 256 KB flash configuration provides embedded firmware storage while supporting integration of measurement routines, display control, communications, and application-specific logic. Key documented features include 32-bit processing, 50 MHz operation, 256 KB flash memory, USB connectivity, graphic-display support, and precision analog measurement capability. The product is identified as the MCF51MM256/128 family and is associated with low-cost, low-power, high-performance embedded designs. Its 80-LQFP package provides a clearly defined PCB footprint and external connectivity for memory, peripherals, analog interfaces, and control signals. The MCF51MM256CLK is suitable for handheld metering devices, medical products, industrial instrumentation, and embedded systems that need a balance of processing performance, analog measurement, connectivity, and low power. The ColdFire V1 architecture is especially relevant when firmware benefits from 32-bit addressability and higher computational capability without moving immediately to a more complex application processor. Designers should verify the complete pinout, electrical limits, clock requirements, memory configuration, USB implementation, and analog settling requirements against the NXP manufacturer datasheet before layout or firmware deployment. Because the part is listed as End of Life by NXP, new production designs should confirm lifecycle status and evaluate an approved successor or redesign plan. This page combines the verified manufacturer and distributor identity, available package and memory information, sourcing context, and practical engineering considerations. It is intended to help engineers determine whether the legacy MCF51MM256CLK remains suitable for maintenance, repair, or controlled legacy production.

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MCF51MM256CMB - 50MHz ColdFire V1 256KB Flash MCU | NXP
MCF51MM256CMB

MCF51MM256CMB - 50MHz ColdFire V1 256KB Flash MCU | NXP

The NXP (formerly Freescale) MCF51MM256CMB is a 32-bit ColdFire V1 microcontroller running at 50 MHz with 256 KB of on-chip Flash and 32 KB of SRAM, packaged in an 81-ball MAPBGA (10x10 mm). The MCF51MM256 series targets handheld metering and low-power embedded applications with a rich analog front-end for energy-measurement designs. What is a ColdFire V1 microcontroller? ColdFire is a 32-bit RISC instruction-set architecture originally developed by Freescale (now NXP) as a successor to the 68k family. The V1 core is the smallest and lowest-power ColdFire implementation, providing 32-bit processing capability with Thumb-like code density. MCUs in this category serve as system controllers in metering, motor control, and consumer products where deterministic 32-bit performance is required without the overhead of higher-tier Cortex-M cores. Key features include 256 KB Flash program memory, 32 KB SRAM, an on-chip LCD driver, 16-bit SAR ADC, two analog comparators, and a multi-channel timer/PWM module. The device integrates a real-time clock, multiple low-power modes (Wait, Stop, Low-Power Run), and a flexible 48-pin I/O count. The ColdFire V1 core delivers 50 MHz operation from a 1.8 V to 3.6 V supply while maintaining static current consumption under 5 uA in Stop mode with RTC. The MCF51MM256's architecture combines a V1 core with a peripheral set optimized for single-phase electricity meters: the ADC plus analog front end enables accurate active/reactive power and RMS voltage/current measurement, while the integrated LCD module can drive up to 8x40 segments typical for residential meter displays. The chip supports background-debug mode (BDM) and JTAG for development, and includes a hardware cryptographic acceleration unit for secure metering applications. Typical applications include single-phase electricity meters, smart energy monitors, HVAC control panels, low-end motor controllers, and consumer appliances with LCD interfaces. The integrated analog chain (16-bit ADC + PGA + comparators) simplifies BOM in cost-sensitive metering designs. When designing with the MCF51MM256, choose an external 32.768 kHz crystal for the RTC and ensure the BDM/JTAG header is accessible for firmware development. Decouple each VDD/VSS pair with a 100 nF ceramic placed within 3 mm of the ball, and provide a 4.7 uF bulk cap near the package to support the LCD charge pump during display refresh.

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MCF51MM256CML - 50MHz ColdFire V1 MCU, 256KB Flash, 104-MAPBGA | NXP
MCF51MM256CML

MCF51MM256CML - 50MHz ColdFire V1 MCU, 256KB Flash, 104-MAPBGA | NXP

The NXP MCF51MM256CML is a ColdFire V1 MCF51MM family 32-bit microcontroller IC operating at up to 50 MHz with 256 KB (256K x 8) of on-chip FLASH program memory, housed in a 104-pin MAPBGA (10x10 mm) surface-mount package. It integrates a ColdFire RISC core, mixed-signal peripherals, and ultra-low-power features for handheld metering and measurement applications. A 32-bit microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (FLASH/ROM), data memory (RAM), and a rich set of peripherals (ADC, timers, communication controllers, GPIOs) into one package. The ColdFire V1 core is a 32-bit variable-length RISC architecture derived from the original ColdFire family, designed for low-cost, low-power, high-performance embedded applications. Within the broader semiconductor taxonomy, this MCU belongs to: microcontroller -> embedded processor -> 32-bit processor -> microprocessor -> semiconductor device. Key features include an integrated analog front-end with 16-bit ADC, dual 16-bit DACs (designed for metrology applications), up to 50 MHz core clock, 256 KB program FLASH, on-chip RAM, low-power Run/Wait/Stop modes, and multiple serial interfaces including I2C, SPI, and UART. The device operates from a 2.5 V/3.3 V supply and supports an extended industrial operating temperature range suitable for harsh embedded environments. Typical applications include single-phase and polyphase smart electricity meters, gas and water flow metering, portable medical monitoring devices, industrial sensor conditioning, and low-power wireless sensor nodes. The integrated 16-bit ADC with PGA and the dual 16-bit DACs make it purpose-built for accurate analog signal acquisition and waveform generation in metering products. When designing with the MCF51MM256CML, observe the PCB layout recommendations in the manufacturer reference manual for the 104-MAPBGA: matched-impedance traces for high-speed peripherals, decoupling on every supply pin, and thermal vias under the package. The 104-ball MAPBGA requires X-ray inspection or AOI during assembly, so production test strategy should plan for BGA-specific processes. This page synthesizes distributor pricing, drop-in alternative MPNs within the MCF51MM family, and practical engineering design notes not consolidated in the manufacturer datasheet, giving engineers a faster path to component selection and BOM risk mitigation.

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MCF51MM256VLK - 32-Bit 50MHz 256KB Flash MCU | NXP
MCF51MM256VLK

MCF51MM256VLK - 32-Bit 50MHz 256KB Flash MCU | NXP

The NXP Semiconductors MCF51MM256VLK is a 32-bit ColdFire V1 microcontroller operating at 50 MHz, with 256 KB of flash program memory, in an 80-pin LQFP package measuring 12 x 12 mm. It integrates USB OTG, CANbus, I²C, SCI, SPI, EBI/EMI, PWM, a low-voltage detector, and a watchdog timer. The device is designed for embedded products requiring precision analog measurement, connectivity, display support, and low-power operation. A microcontroller is a programmable semiconductor that integrates a processor core, memory, and peripherals into one device. In the embedded-control hierarchy, the MCF51MM256VLK is a 32-bit MCU based on the ColdFire V1 core, a RISC processor architecture. Its combination of communication interfaces, precision measurement resources, and relatively substantial flash memory allows designers to consolidate functions that might otherwise require multiple discrete components. Verified product information identifies 256 KB of flash memory organized as 256K x 8, a 50 MHz operating frequency, 47 I/O lines, and an 80-pin LQFP package. The verified connectivity list includes CANbus, EBI/EMI, I²C, SCI, SPI, and USB OTG. PWM, low-voltage detection, and watchdog-timer functions support motor, power, and industrial-control designs. The manufacturer describes the family as providing ultra-low-power operation, USB connectivity, graphic-display support, and high measurement accuracy. The ColdFire V1 architecture gives the MCU a 32-bit processing path for embedded control, while the peripheral mix supports mixed-signal products and connected equipment. USB OTG can simplify direct host or device connectivity, while CANbus supports industrial networking. Serial interfaces provide expansion paths for displays, sensors, data converters, and communications modules. Because detailed electrical limits are not exposed in the supplied search data, design engineers should use the manufacturer data sheet and reference manual for voltage, timing, pin-level, and peripheral configuration details. Typical applications include handheld metering equipment, medical products, industrial control panels, USB-connected instruments, CAN-based nodes, display controllers, and precision analog measurement systems. The part is particularly relevant where a 32-bit MCU, substantial flash storage, USB, and serial connectivity are needed together in one package. Its 80-pin LQFP also exposes more I/O than a small leadless MCU, which can simplify peripheral connection in a conventional through-hole assembly process. The principal design consideration is lifecycle planning. The NXP product page labels MCF51MM256VLK as End of Life, so new production designs should confirm replacement recommendations with NXP rather than assuming long-term availability. Existing designs should verify the exact package pinout, voltage requirements, clock configuration, memory programming method, and USB implementation against the official documentation before layout or firmware changes. This page combines the verified product identity, package, memory, core, interface, and lifecycle information with practical sourcing guidance. It is intended to help engineers evaluate the MCU quickly while preserving the distinction between verified facts and details that still require direct review of the manufacturer documentation.

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MCF51MM256VMB - 32-bit ColdFire V1 MCU, 256KB Flash 50MHz | NXP
MCF51MM256VMB

MCF51MM256VMB - 32-bit ColdFire V1 MCU, 256KB Flash 50MHz | NXP

The NXP MCF51MM256VMB is a 32-bit ColdFire V1 microcontroller with 256KB flash memory, 32KB RAM, and a 50MHz core clock, housed in an 81-ball MAPBGA (10x10 mm) package with 48 general-purpose I/O lines. A microcontroller unit (MCU) is a single-chip embedded computer that integrates a processor core, program memory, data memory, and peripheral functions on one die. Within the embedded systems hierarchy, the MCU sits below microprocessors in raw compute power but above discrete logic in integration, making it the workhorse of cost-sensitive, low-power control applications. The ColdFire V1 core from Freescale (now NXP) is a 32-bit architecture derived from the 68000 family, offering a favorable code-density and price point for handheld and metering products. Key features of the MCF51MM256VMB include 256KB of on-chip flash program memory organized as 256K x 8, 32KB of RAM, and a rich connectivity set covering CANbus, external bus interface (EBI/EMI), I2C, SCI (UART), SPI, and USB On-The-Go. Peripheral functions include pulse-width modulation (PWM), a low-voltage detector (LVD), and a watchdog timer (WDT). The external oscillator type allows designers to choose precision clock sources for metering accuracy. Architecturally, the device belongs to the low-cost, low-power, high-performance ColdFire V1 family explicitly designed for handheld metering devices, where battery life, integrated USB OTG for firmware updates, and CAN interfaces for utility networks are decisive. The 50MHz core speed provides sufficient headroom for metrology DSP-style computations while retaining single-supply low-power operation. Typical applications include smart electricity, water, and gas meters, handheld data-collection terminals, industrial instrumentation front ends, and battery-powered equipment requiring USB connectivity for field servicing. When designing with this part, note the lifecycle status: NXP lists the MCF51MM series as obsolete, so new designs should evaluate the available stock through authorized distributors or last-time-buy channels, and legacy designs should secure inventory or qualify a successor. This page synthesizes distributor pricing, same-family drop-in alternatives, and sourcing-risk guidance not found in the manufacturer datasheet, giving engineers a single decision-ready reference as of 2026-10-18.

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MCF51MM256VML - 32-bit ColdFire V1 MCU 50MHz 256KB | NXP
MCF51MM256VML

MCF51MM256VML - 32-bit ColdFire V1 MCU 50MHz 256KB | NXP

The NXP (Freescale Semiconductor) MCF51MM256VML is a 32-bit ColdFire V1 microcontroller running at 50 MHz with 256 KB (256K x 8) of on-chip Flash memory, housed in a 104-ball MAPBGA (10x10 mm) package. It operates from a 2.5V or 3.3V supply and integrates a rich analog and metering-oriented peripheral set aimed at low-power handheld systems. A microcontroller (MCU) is a single-chip computer that combines a processor core, memory, and programmable peripherals on one die. Within the semiconductor hierarchy, the MCF51MM256 belongs to the ColdFire V1 family of 32-bit microcontrollers, which sits above 8-bit MCUs in processing capability while retaining the low cost and low power of compact embedded designs. MCUs of this class typically serve as the main system controller in embedded products. Key features include the 50 MHz ColdFire V1 core delivering 32-bit integer performance, 256 KB Flash program memory for large application code, operation down to 2.5V for battery-friendly designs, and a peripheral set designed for handheld metering devices. The MAPBGA package provides high I/O density in a compact 10x10 mm footprint. Technically, the ColdFire V1 architecture is a cost-optimized implementation of the ColdFire instruction set with a variable-length RISC-like instruction format, giving efficient code density compared with fixed-width 32-bit RISC cores. The device was originally produced by Freescale Semiconductor, which merged into NXP Semiconductors; production for standard channels is now largely handled through aftermarket sources such as Rochester Electronics, indicating legacy-lifecycle status. Typical applications include handheld metering devices (the family's stated design target), battery-powered industrial instruments, portable data loggers, and low-cost control panels where 32-bit performance is needed but power budget is tight. When designing with this device, plan early for sourcing: because standard-channel availability is limited, new designs should verify long-term supply or consider a pin-compatible family variant before committing to a layout. This page synthesizes distributor pricing context, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet, with data verified as of 2026-10-18.

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MCF51QE128CLH - ColdFire V1 32-bit MCU, 128KB Flash, 50MHz | NXP
MCF51QE128CLH

MCF51QE128CLH - ColdFire V1 32-bit MCU, 128KB Flash, 50MHz | NXP

The NXP MCF51QE128CLH is a 32-bit microcontroller based on the ColdFire V1 core, delivering up to 50.33 MHz CPU performance above 2.4V, with 128KB (131KB total) of on-chip Flash memory, 8KB of RAM, and 72 general-purpose I/O lines, housed in a 64-pin LQFP (10x10 mm, 0.5 mm pitch) package. A microcontroller (MCU) is a single-chip computer that integrates a processor core, memory, and peripherals on one die, sitting within the broader hierarchy of embedded processors: MCU -> microcontroller -> embedded processor -> semiconductor. The ColdFire V1 architecture is an entry-level 32-bit core derived from the 68000 family, positioned at the low end of NXP's 32-bit ColdFire controller portfolio. The MCF51QE128 belongs to the QE family, the first family in NXP's Flexis series, which was an industry first offering pin-for-pin, development-tool, and peripheral-set compatibility between 8-bit and 32-bit devices. This means designers can migrate between MC9S08QE128 (8-bit) and MCF51QE128 (32-bit) parts without changing the PCB footprint or peripheral code structure. Key features include a 24-channel, 12-bit ADC for precision analog acquisition, PWM channels for motor control and power conversion, JTAG boundary scan for production test, and a supply range of 2.5V/3.3V operation. The 50.33 MHz maximum CPU frequency at voltages above 2.4V (40 MHz above lower thresholds) provides substantial processing headroom for a low-cost 32-bit controller. Typical applications include industrial control and automation, consumer appliances, motor control with the ADC and PWM peripherals, building automation, and legacy designs requiring low-power 32-bit processing. The QE family's backward compatibility makes it a natural upgrade path from 8-bit HCS08 designs. Design consideration: this part is End of Life per NXP's official product page, so new designs should verify last-time-buy windows and plan migration to NXP Kinetis ARM Cortex-M parts or existing stock. The 64-LQFP package requires standard 0.5 mm pitch SMD assembly processes. This page synthesizes distributor pricing, drop-in alternatives, EOL lifecycle guidance, and practical design notes not found in the manufacturer datasheet alone.

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MCF51QE128CLK - 32-bit ColdFire V1 MCU 128KB Flash 50MHz | NXP
MCF51QE128CLK

MCF51QE128CLK - 32-bit ColdFire V1 MCU 128KB Flash 50MHz | NXP

The NXP Semiconductors MCF51QE128CLK is a 32-bit microcontroller unit based on the ColdFire V1 core, integrating 128 KB of flash memory, up to 50.33 MHz CPU operation (at supply voltages above 2.4 V), and an 80-pin LQFP package. It belongs to the MCF51QE family, part of NXP's Flexis series that unites pin-compatible 8-bit and 32-bit devices on a common Controller Continuum. A 32-bit MCU is a complete computing system on a single chip, combining a processor core, flash program memory, RAM, clock generation, and multiple peripherals such as ADCs, timers, and serial interfaces. Within the product hierarchy, the MCF51QE128 sits at the low end of the 32-bit ColdFire controller family, bridging the gap between 8-bit microcontrollers and higher-performance 32-bit devices. Key features include the Version 1 ColdFire CPU delivering up to 50.33 MHz above 2.4 V (40 MHz above 2.1 V and 20 MHz above 1.8 V), approximately 0.94 Dhrystone MIPS/MHz, a 24-channel 12-bit ADC, and operation from 2.5 V or 3.3 V supplies. The QE family's Flexis architecture means 8-bit pin-compatible siblings exist, easing migration as application complexity grows. Architecturally, the ColdFire V1 core is a resource-efficient implementation of the ColdFire instruction set, offering compact code density and deterministic execution suited to embedded control. The integrated flash and rich analog peripherals reduce external component count and system cost. Typical applications include industrial control systems, consumer appliances, and motor-control or sensor-interface boards where a 12-bit, 24-channel ADC is valuable. Design consideration: verify CPU frequency versus supply voltage, since maximum clock scales with VDD per the manufacturer datasheet. IMPORTANT: this part is marked End of Life by NXP; this page adds drop-in alternatives, comparison data, and sourcing guidance beyond the manufacturer datasheet.

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