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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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MCF51QE32CLH - 32KB Flash ColdFire V1 MCU 50MHz LQFP-64 | NXP
MCF51QE32CLH

MCF51QE32CLH - 32KB Flash ColdFire V1 MCU 50MHz LQFP-64 | NXP

The NXP MCF51QE32CLH is a 32-bit ColdFire V1 microcontroller with 32KB Flash, 50MHz CPU, and 64-LQFP (10x10) package, part of the Flexis QE series. It provides up to 50.33MHz CPU speed above 2.4V, 40MHz above 2.1V, and 20MHz above 1.8V, with 0.94 Dhrystone MIPS/MHz performance. What is a microcontroller (MCU)? A microcontroller is a single-chip computer containing a processor core, memory (Flash/RAM), and programmable peripherals. The ColdFire V1 is a 32-bit RISC core derived from the original 68000 architecture, optimized for embedded control. The QE family uses a pin-compatible 8-bit and 32-bit device duo, making it the first Flexis series family that lets designers migrate between 8-bit S08 and 32-bit ColdFire without board rework. Key features include 32KB on-chip Flash, 2.5V/3.3V operation, integrated ADC, timers, and communication peripherals (SCI, SPI, I2C). The ColdFire V1 core delivers 0.94 DMIPS/MHz, balancing code density and throughput for cost-sensitive embedded applications. The 64-LQFP (10x10) package supports industrial temperature ranges and offers generous I/O count for mixed-signal designs. The QE architecture combines a variable-length RISC instruction set with ColdFire's traditional C-friendly programming model. Its peripheral set includes multiple timers, a 12/16-bit ADC with up to 24 channels, comparators, and on-chip voltage regulator for single-rail operation. The Flexis pin-compatibility between S08QE128 and MCF51QE128 enables migration from 8-bit to 32-bit with zero PCB changes. Typical applications include industrial control, HVAC, security panels, home appliances, and motor control edge nodes. Designers value the Flexis migration path when systems grow beyond original 8-bit code budgets but cannot tolerate a board respin. When designing with this device, ensure the VDDA/VREF analog supply is well-decoupled and that unused I/O pins are configured as outputs or pulled to defined levels. For low-noise analog measurement, route AVSS traces separately from digital returns and add a ferrite bead between VDD and VDDA. This page synthesizes distributor pricing, Flexis migration options, and pin-compatible drop-in alternatives not found in the manufacturer datasheet alone, supporting faster sourcing decisions.

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MCF51QE32LH - 32-bit ColdFire V1 MCU, 32KB Flash, 50MHz | NXP
MCF51QE32LH

MCF51QE32LH - 32-bit ColdFire V1 MCU, 32KB Flash, 50MHz | NXP

The NXP Semiconductors MCF51QE32LH is a 32-bit microcontroller based on the ColdFire V1 core, running at up to 50.33 MHz, with 32KB (32K x 8) of on-chip Flash memory and 8KB RAM, housed in a 64-pin LQFP (10 x 10 mm) package. It belongs to the MCF51QE (QE) family, the first family in NXP's Flexis series, which pairs pin-compatible 8-bit (HCS08) and 32-bit (ColdFire V1) devices for scalable migration. A 32-bit microcontroller (MCU) is an integrated circuit that combines a processor core, memory, and peripherals on a single die to provide embedded control within the broader semiconductor hierarchy: ColdFire V1 CPU -> MCU -> embedded processor -> semiconductor. The QE family lets engineers move between the 8-bit MC9S08QE and 32-bit MCF51QE families without changing the PCB footprint, protecting layout and software investment. Key performance features include a 50.33-MHz ColdFire V1 CPU above 2.4V, 40-MHz operation above 2.1V, and 20-MHz operation at lower supply, with a 2.5V/3.3V supply domain as confirmed by distributor data. The Flash-based program memory supports field reprogramming, while the low-voltage, low-power design suits battery-powered and cost-sensitive embedded systems. Architecturally, the ColdFire V1 core delivers 32-bit RISC processing with reduced code size compared to 8-bit cores, while retaining the register model familiar to HCS08 developers, easing the migration path within the Flexis series. Peripherals typically integrate serial communication, timers, and analog functions for single-chip embedded control, per the manufacturer's QE family documentation. Typical applications include industrial control, consumer appliances, low-power sensing nodes, and motor control subsystems where 32-bit headroom and small form factor are required. A key design consideration: this part is End of Life (EOL) per the NXP product page, so new designs should evaluate family substitutes such as MCF51QE64LH or the pin-compatible 8-bit MC9S08QE series. This page synthesizes distributor pricing, drop-in alternatives, lifecycle status, and practical design notes not found in the manufacturer datasheet alone.

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MCF51QE64CLH - 32-bit ColdFire V1 MCU 64KB Flash 50MHz | NXP
MCF51QE64CLH

MCF51QE64CLH - 32-bit ColdFire V1 MCU 64KB Flash 50MHz | NXP

The NXP Semiconductors MCF51QE64CLH is a 32-bit microcontroller based on the ColdFire V1 core, delivering 50 MHz CPU performance with 64 KB (64K x 8) of on-chip Flash memory, packaged in a 64-pin LQFP (10x10 mm) surface-mount package. A microcontroller (MCU) is a single-chip embedded computer that integrates a processor core, memory, and peripherals on one die, forming the lowest level of the computing hierarchy: microcontroller -> embedded processor -> application processor. The ColdFire V1 architecture is a 32-bit derivative of the classic 68000 instruction set, and the MCF51QE family is part of the Flexis series - the first family in which NXP (then Freescale) offered a pin-compatible 8-bit and 32-bit device duo, allowing designers to migrate from S08 8-bit MCUs to 32-bit ColdFire MCUs without a PCB redesign. Key features include CPU clock scaling by supply voltage: 50.33 MHz above 2.4V, 40 MHz above 2.1V, and 20 MHz above 1.8V across the operating temperature range, per the manufacturer technical data. The core provides 0.94 Dhrystone MIPS per MHz. Supply options are 2.5V or 3.3V rails. The 64 KB Flash array supports in-system reprogramming, and the QE family integrates typical mixed-signal peripherals for cost-sensitive embedded control. Typical applications include industrial automation nodes, consumer appliance control, motor-adjacent smart sensing, and legacy designs migrating from 8-bit S08 parts to 32-bit performance on the same footprint. Design consideration: derate the maximum CPU frequency according to the minimum supply voltage in your system; a 3.3V rail supports the full 50 MHz, while a 1.8V rail must be clocked at 20 MHz or lower. Note: NXP has marked this part End of Life; procurement should plan replacement strategy or use authorized aftermarket sources such as Rochester Electronics. This page synthesizes distributor pricing, drop-in family alternatives, and design notes not found in the manufacturer datasheet.

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MCF51QE96CLH - 50MHz ColdFire V1 MCU 96KB Flash 64-LQFP | NXP
MCF51QE96CLH

MCF51QE96CLH - 50MHz ColdFire V1 MCU 96KB Flash 64-LQFP | NXP

The NXP (formerly Freescale) MCF51QE96CLH is a 32-bit ColdFire V1 microcontroller featuring 96 KB of on-chip Flash and 8 KB of RAM, operating at up to 50.33 MHz and housed in a 64-pin LQFP package (10x10 mm). It is part of the Flexis QE series, the first family in NXP's Flexis portfolio to offer pin-compatible 8-bit and 32-bit MCU duos, allowing system architects to migrate from the S08 QE family to 32-bit ColdFire V1 performance without PCB rework. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory (Flash/RAM), and a rich set of peripherals such as timers, ADCs, communication interfaces, and GPIO into one package. MCUs sit within the broader taxonomy of embedded processors, alongside microprocessors (MPUs) and DSPs; the ColdFire V1 family specifically targets low-power, cost-sensitive embedded control. Compared with traditional CISC cores, the ColdFire V1 ISA delivers high code density and a streamlined 0.94 DMIPS/MHz pipeline, making the MCF51QE96CLH efficient for deterministic real-time tasks. Key specifications include a 32-bit ColdFire V1 CPU with V1 instruction set, 96 KB program Flash, 8 KB SRAM, multiple timers including TPM and PIT, ADC channels, and serial peripherals (SCI, SPI, I2C). The 64-LQFP package provides generous GPIO for embedded designs and supports an industrial temperature range typical of Freescale/NXP QE-series parts. Architecturally, the device pairs the ColdFire V1 core with an enhanced integration module (EIM), a multi-master bus, and on-chip voltage regulation supporting 2.1 V to 3.6 V operation. This makes it well suited to battery-powered industrial nodes and small-form-factor motor-control or sensor-hub designs where deterministic interrupt latency and low BOM cost are priorities. Typical applications include industrial sensor hubs, low-end motor control, smart metering, building automation, and consumer white-goods HMI controllers where designers want 32-bit performance but 8-bit code-size economics. The pin-compatible relationship with the 8-bit MC9S08QE96 also lets teams prototype on 8-bit and migrate to 32-bit on the same PCB. When designing with the MCF51QE96CLH, evaluate the long-term supply outlook carefully: NXP has issued a Product Change Notification / Discontinuance notice for the Flexis QE family, so designers should review replacement guidance from NXP before committing to a new design. Confirm last-time-buy dates with your distributor before placing volume orders.

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MCF51QE96CLK - 32-bit ColdFire V1 MCU, 96KB Flash, 50MHz | NXP
MCF51QE96CLK

MCF51QE96CLK - 32-bit ColdFire V1 MCU, 96KB Flash, 50MHz | NXP

The NXP MCF51QE96CLK is a 32-bit ColdFire V1 microcontroller from the Flexis QE family, featuring 96KB of on-chip Flash and 96KB of FlexMemory, executing at up to 50.33 MHz from a 2.5V/3.3V supply, housed in an 80-pin LQFP (14x14 mm) package. Key features include 96KB program Flash, up to 8KB RAM, a 24-channel 12-bit analog-to-digital converter (ADC), multiple serial interfaces including SCI, SPI, and I2C, plus a hardware cryptographic acceleration unit (CAU) on select QE derivatives. The ColdFire V1 core delivers 0.94 Dhrystone MIPS per MHz, giving roughly 47 MIPS at peak clock. The 80-LQFP package supports up to 69 general-purpose I/O pins and offers a -40C to +85C industrial temperature grade. What is a ColdFire V1 microcontroller? The ColdFire V1 is a 32-bit RISC processor architecture developed by Freescale (now NXP) as a low-power, low-cost derivative of the original ColdFire 68k family. It preserves binary compatibility with 68k while simplifying the pipeline and instruction set, making it ideal for cost-sensitive embedded control. Within NXP's controller continuum, the QE family is the Flexis pin-compatible 8-bit/32-bit crossover point: the S08QE devices share the same peripheral set and pinout, allowing designers to start with an 8-bit core and migrate upward without board rework. The MCF51QE96CLK architecture integrates a memory-mapped Flash controller with security and encryption support, a multi-channel clock generation module with FLL, and a 5-channel flexible timer/PWM unit. The on-chip voltage regulator enables single-supply 2.5V or 3.3V operation while powering the core logic from an internal 1.8V rail, simplifying power-tree design. Typical applications include industrial control, point-of-sale terminals, security and access panels, HVAC fan controllers, low-end graphical user-interface boards, and home appliance control where the pin-compatibility with the 8-bit S08QE family provides a future-proof upgrade path. When designing with the MCF51QE96CLK, note that the 80-LQFP requires careful thermal management only at high ambient temperatures - typical MCU power dissipation remains below 200 mW. The FlexMemory region (96KB total) is split between EEPROM-emulation Flash and program Flash; allocate FlexMemory in the linker script to support both block-level EEPROM emulation and program storage. The QSPI/SPI peripheral can boot the device from an external Flash for field-upgradeable firmware scenarios. This page synthesizes distributor pricing, Flexis-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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