MCF51QE64CLH - 32-bit ColdFire V1 MCU 64KB Flash 50MHz | NXP
N.º da peça: MCF51QE64CLH ✗ Fim de vida| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $8.95 | $8,95 |
| 10 | $8.25 | $82,50 |
| 100 | $7.4 | $740,00 |
| 500 | $6.8 | $3.400,00 |
| 1.000 | $6.25 | $6.250,00 |
MCF51QE64CLH Visão geral
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.
Alternativas drop-in para MCF51QE64CLH — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com MCF51QE64CLH (mesmo formato e footprint) — diferindo em Maximum CPU Frequency, Package, RoHS Status, ADC, Supply Voltage.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
MCF51QE96CLH
✅ Drop-In✓ Em estoque
$7.25 / unidade
Ver ficha técnica →MCF51QE32CLH
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$6.2 / unidade
Ver ficha técnica →MCF51QE64CLK
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
MCF51AG96CLK
✅ Drop-In✓ Em estoque
$10.4 / unidade
Ver ficha técnica →MCF51QE64CLH Classificações máximas e características elétricas
| Core Processor | ColdFire V1 (32-bit) |
| Core Architecture | Version 1 ColdFire CPU (68000-derived) |
| Maximum CPU Frequency | 50.33 MHz (above 2.4 V) |
| CPU Frequency at 2.1 V | 40 MHz |
| CPU Frequency at 1.8 V | 20 MHz |
| Flash Memory | 64 KB (64K x 8) |
| Performance | 0.94 Dhrystone MIPS/MHz |
| Supply Voltage Options | 2.5 V / 3.3 V |
| Bits | 32 |
| Encapsulamento | 64-LQFP (10x10 mm) |
| Tipo de montagem | Surface Mount |
| Product Family | MCF51QE (Flexis series) |
| Packaging Type | Tray |
| Status do ciclo de vida | End of Life (NXP) |
Guia de Configuração de Pinos do MCF51QE64CLH 64-lqfp (10x10 mm)
Configuração de pinos para MCF51QE64CLH (pacote 64-lqfp (10x10 mm)). Este CI digital inclui GPIO, interfaces de comunicação (UART, SPI, I2C) e pinos de alimentação. Consulte o datasheet do fabricante para funções alternativas dos pinos e opções de configuração. Essencial para projeto de sistemas embarcados e layout de PCB.
Nenhum dado detalhado de pinagem disponível para MCF51QE64CLH.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
MCF51QE64CLH é adequado para 6 aplicaçãos: Industrial Automation Nodes, 8-bit to 32-bit Migration Designs, Consumer Appliance Control, Smart Sensing and Metering, Legacy Product Sustaining and Repair, Embedded Learning and Prototyping.
Industrial Automation Nodes
The MCF51QE64CLH fits industrial control nodes where a modest 32-bit core, 64 KB Flash, and low EMI single-supply operation (2.5V/3.3V) are sufficient. The 50.33 MHz ColdFire V1 core executes control loops and protocol handling for CAN-adjacent and serial field devices, while the 0.94 Dhrystone MIPS/MHz efficiency keeps real-time tasks deterministic. Typical circuit role: main controller running scan cycles, handling SCI/SPI/I2C peripheral links to sensors and actuators. The voltage-scaled clock (20 MHz at 1.8V) also enables low-power idle strategies between scan cycles. Trade-off: at 50 MHz the core draws more current than 8-bit alternatives, so power-cycled nodes should use the 20 MHz configuration during standby.
Recomendado
8-bit to 32-bit Migration Designs
The defining feature of the Flexis QE series is the pin-compatible 8-bit/32-bit duo: MC9S08QE devices and MCF51QE devices share the same 64-LQFP footprint. The MCF51QE64CLH is the direct upgrade when an 8-bit design outgrows its CPU budget - same PCB, same peripheral map, 32-bit ColdFire V1 core at 50 MHz instead of the S08 bus clock. Firmware is ported rather than rewritten because the peripheral register model is aligned across the duo. Designers should budget for compiler differences (C code generally ports cleanly; hand-tuned 8-bit assembly does not). This application is common in appliance and metering products needing a mid-life performance boost without a respin.
Recomendado
Consumer Appliance Control
White goods, small appliances, and HVAC controls benefit from the QE64's balance of Flash density, single-chip integration, and low-voltage clock scaling. The 2.5V/3.3V operation suits directly regulated wall-adapter supplies, while the 64 KB Flash holds UI logic, communications stacks, and diagnostics. The ColdFire V1 core handles button scanning, display multiplexing, and closed-loop temperature or motor control simultaneously at 50 MHz. Per the datasheet voltage-frequency table, products with battery-backed operation can drop to 1.8V and 20 MHz to cut consumption. Consideration: being EOL, appliance makers should secure a last-time-buy or design the MCF51QE96CLH footprint-compatible variant into future builds.
Recomendado
Smart Sensing and Metering
Metering and smart-sensor front ends use the MCF51QE64CLH as the processing element behind analog front ends: the ColdFire V1 core applies calibration math, filtering, and protocol framing that exceed 8-bit headroom, while 64 KB Flash stores multi-tariff tables and logs. The 0.94 MIPS/MHz rating lets designers estimate CPU load precisely - for example, a 25 MHz configuration still delivers about 23.5 Dhrystone MIPS for FFT-based metering. Serial links (SCI/I2C/SPI per family peripherals) export data to communication modules. Because supply scaling permits 2.5V analog-friendly rails, mixed-signal noise margins improve versus 5V 8-bit parts. Verify peripheral availability in the QE64 datasheet chapter for the specific meter variant.
Recomendado
Legacy Product Sustaining and Repair
A substantial installed base of products built on the MCF51QE64CLH now requires sustaining engineering: firmware bug fixes, feature patches, and board repair. Since NXP declared the part End of Life, sustaining teams must source from remaining distributor stock or the authorized aftermarket (Rochester Electronics lists the exact MPN, ensuring original-factory die with full traceability). The 64-LQFP package is hand-reworkable with hot air, and existing programming fixtures (OSBDM) still function. Best practice: qualify a locked stock lot with date-code documentation, and validate any substituted lot (including the 96 KB QE96) against the production test plan before shipping field updates.
Recomendado
Embedded Learning and Prototyping
Universities and hobbyist labs historically used the QE family to teach 32-bit embedded concepts on inexpensive hardware, and the MCF51QE64CLH remains useful for ColdFire-architecture coursework. The 50 MHz core is fast enough for RTOS labs (uCLinux-style bare-metal schedulers, not full Linux), while 64 KB Flash keeps projects entirely on-chip - no external memory needed. The 10x10 mm 64-LQFP is solderable on low-cost two-layer breakout boards. Voltage-scaled clocking (20-50.33 MHz) provides a practical exercise in supply-driven derating. For new curricula, NXP recommends the active Kinetis Arm Cortex-M parts, but existing lab kits with QE64 stock remain fully functional teaching platforms.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para MCF51QE64CLH — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | MCF51QE96CLH | MCF51QE32CLH | MCF51QE64CLK | MCF51AG96CLK |
|---|---|---|---|---|---|
| Package | 64-LQFP (10x10 mm) | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Flash Memory | 64 KB | 96 KB | 32 KB | 64 KB | 96 KB |
| Core | ColdFire V1 (32-bit) | ColdFire V1 (32-bit) | ColdFire V1 (32-bit) | ColdFire V1 (32-bit) | ColdFire V1 (32-bit) |
| Drop-in Compatibility | Reference (64-LQFP Flexis) | Pin-to-pin compatible | Pin-to-pin compatible | Pin-to-pin compatible (verify suffix grade) | Same package; peripheral map differs - verify pins |
Principais diferenciais
- Balanced mid-density Flash in the QE family (vs MCF51QE96CLH)
- Voltage-scaled performance envelope (vs MCF51AG96CLK)
- Flexis pin-compatible 8/32-bit duo membership (vs MCF51QE32CLH)
Notas de projeto
Respect the voltage-dependent clock limits from the Freescale technical data: 50.33 MHz requires a supply above 2.4V, 40 MHz above 2.1V, and 20 MHz above 1.8V. If your 3.3V rail can droop during brownout events, configure a low-voltage-detect interrupt to reduce the clock before the rail falls below 2.4V, or the CPU may violate timing before reset asserts. Choose the 2.5V regulator option only if your firmware clocks at or below the 2.5V-equivalent limit.
The 64-LQFP (10x10 mm) has 0.5 mm pin pitch; use 4-mil trace/space minimum for fanout and place the 0.1 uF decoupling capacitor within 2 mm of each supply pin pair. Keep the crystal traces short (under 15 mm) and guard them with ground. Because the QE family shares the footprint with 8-bit S08QE parts, a dual- footprint pad pattern (LQFP-64) enables 8-bit/32-bit build variants on one PCB - useful for cost-down SKUs.
The MCF51QE64CLH is End of Life per NXP: no new production, and channel stock is finite. Before committing a redesign or repair batch, confirm date codes and authenticity (Rochester Electronics is the authorized aftermarket source listing this exact MPN). Do not assume the QE96 substitute without updating the linker file - code linked above 64 KB addresses will not run on the QE64. Finally, CodeWarrior toolchain updates have ceased alongside EOL, so freeze compiler versions in your build environment.
Informações de conformidade
Compliance data not stated in the provided web data; refer to the NXP product page Environmental Quality section for the official RoHS/REACH declaration.