MCF51QE32CLH - 32KB Flash ColdFire V1 MCU 50MHz LQFP-64 | NXP
MPN： MCF51QE32CLH ⚠ 最後購買機會MCF51QE32CLH 概覽
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.
直接替換替代品，適用於 MCF51QE32CLH — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： MCF51QE32CLH （相同外形與佔位） — 差異在於 Supply Voltage, Package, Core Architecture, Maximum CPU Frequency, Flash Memory.
MCF51QE32LH
✅ 直接替換聯絡詢價
查看資料表 →MCF51QE64LH
✅ 直接替換📋 參考替代品（不在目錄中）
MCF51QE128CLH
✅ 直接替換聯絡詢價
查看資料表 →MC9S08QE32CLCR
✅ 直接替換聯絡詢價
查看資料表 →S9S08QE32F1MLC
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
MCF51QE32CLH 最大額定值與電氣特性
| Core Architecture | ColdFire V1 (32-bit RISC) |
| Family | MCF51QE (Flexis series) |
| Flash Memory | 32 KB (32K x 8) |
| Maximum CPU Speed | 50.33 MHz (>2.4V) |
| CPU Speed @ 2.1V | 40 MHz |
| CPU Speed @ 1.8V | 20 MHz |
| Performance | 0.94 Dhrystone MIPS/MHz |
| 供應電壓 | 2.5V / 3.3V (1.8V-3.6V operating range) |
| 封裝 | 64-LQFP (10x10 mm) |
| 安裝類型 | Surface Mount |
| 資料匯流排寬度 | 32-bit |
| 工作溫度 | -40C to +85C (industrial) |
| Communication Peripherals | SCI, SPI, I2C |
| On-Chip Voltage Regulator | Yes (single-rail operation) |
| Manufacturer | NXP Semiconductors (formerly Freescale) |
MCF51QE32CLH 腳位配置
| 腳位 1 | PTD0 — Port D I/O / [DATA_NEEDED: alternate function] |
| 腳位 2 | PTD1 — Port D I/O |
| 腳位 3 | PTD2 — Port D I/O |
| 腳位 4 | PTD3 — Port D I/O |
| 腳位 5 | VDD — Power supply input |
| 腳位 6 | VSS — Ground |
| 腳位 7 | PTD4 — Port D I/O |
| 腳位 8 | PTD5 — Port D I/O |
| 腳位 9 | PTD6 — Port D I/O |
| 腳位 10 | PTD7 — Port D I/O |
| 腳位 11 | PTC0 — Port C I/O |
| 腳位 12 | PTC1 — Port C I/O |
| 腳位 13 | PTC2 — Port C I/O |
| 腳位 14 | PTC3 — Port C I/O |
| 腳位 15 | PTC4 — Port C I/O |
| 腳位 16 | PTC5 — Port C I/O |
| 腳位 17 | PTC6 — Port C I/O |
| 腳位 18 | PTC7 — Port C I/O |
| 腳位 19 | PTB0 — Port B I/O |
| 腳位 20 | PTB1 — Port B I/O |
| 腳位 21 | PTB2 — Port B I/O |
| 腳位 22 | PTB3 — Port B I/O |
| 腳位 23 | PTB4 — Port B I/O |
| 腳位 24 | PTB5 — Port B I/O |
| 腳位 25 | PTB6 — Port B I/O |
| 腳位 26 | PTB7 — Port B I/O |
| 腳位 27 | PTA0 — Port A I/O |
| 腳位 28 | PTA1 — Port A I/O |
| 腳位 29 | PTA2 — Port A I/O |
| 腳位 30 | PTA3 — Port A I/O |
| 腳位 31 | PTA4 — Port A I/O |
| 腳位 32 | PTA5 — Port A I/O |
| 腳位 33 | PTA6 — Port A I/O |
| 腳位 34 | PTA7 — Port A I/O |
| 腳位 35 | VDDA — Analog power supply |
| 腳位 36 | VSSA — Analog ground |
| 腳位 37 | VREFH — ADC voltage reference high |
| 腳位 38 | VREFL — ADC voltage reference low |
| 腳位 39 | PTE0 — Port E I/O |
| 腳位 40 | PTE1 — Port E I/O |
| 腳位 41 | PTE2 — Port E I/O |
| 腳位 42 | PTE3 — Port E I/O |
| 腳位 43 | PTE4 — Port E I/O |
| 腳位 44 | PTE5 — Port E I/O |
| 腳位 45 | PTE6 — Port E I/O |
| 腳位 46 | PTE7 — Port E I/O |
| 腳位 47 | PTF0 — Port F I/O |
| 腳位 48 | PTF1 — Port F I/O |
| 腳位 49 | PTF2 — Port F I/O |
| 腳位 50 | PTF3 — Port F I/O |
| 腳位 51 | PTF4 — Port F I/O |
| 腳位 52 | PTF5 — Port F I/O |
| 腳位 53 | PTF6 — Port F I/O |
| 腳位 54 | PTF7 — Port F I/O |
| 腳位 55 | RESET — Reset input (active low) |
| 腳位 56 | IRQ — External interrupt request |
| 腳位 57 | TCLK — Timer clock input |
| 腳位 58 | BKGD — Background debug mode |
| 腳位 59 | VDD — Power supply input |
| 腳位 60 | VSS — Ground |
| 腳位 61 | XTAL — Crystal oscillator input |
| 腳位 62 | EXTAL — External clock/crystal |
| 腳位 63 | VSS — Ground |
| 腳位 64 | VDD — Power supply input |
典型應用
MCF51QE32CLH 適用於 7 應用s: Industrial Motor Control, HVAC Control Systems, Security and Alarm Panels, Home Appliance Controllers, Smart Sensor Edge Nodes, Battery-Powered Portable Devices, Automotive Body Electronics (Legacy).
Industrial Motor Control
The MCF51QE32CLH is well-suited for low-cost BLDC and stepper motor controllers up to modest power levels. Its 50.33MHz ColdFire V1 core delivers 0.94 DMIPS/MHz, sufficient for field-oriented control (FOC) loops at lower switching frequencies. The integrated ADC samples phase currents with predictable latency, while PWM timers drive three-phase bridges directly. The 64-LQFP (10x10) package simplifies PCB layout and supports industrial -40C to +85C operation. For higher power designs, designers typically pair it with external gate drivers and current-sense amplifiers.
推薦
HVAC Control Systems
The MCF51QE32CLH's integrated peripherals and single-rail 2.5V/3.3V operation make it a strong fit for HVAC thermostats and damper controllers. The ColdFire V1 core executes PID loops for temperature regulation while SCI/SPI/I2C interfaces connect to remote sensor nodes and displays. Its 32KB Flash accommodates HVAC protocol stacks, and the 64-LQFP package allows direct PCB mounting in appliance-style enclosures. The on-chip voltage regulator eliminates an external LDO, reducing BOM cost and improving reliability in long-life installations.
推薦
Security and Alarm Panels
Security alarm panels benefit from the MCF51QE32CLH's combination of GPIO count, timers, and robust ColdFire V1 core. The MCU handles keypad scanning, PIR sensor input, siren driver control, and encrypted communication over SCI or SPI to a central hub. 32KB Flash is sufficient for zone logic and basic encryption libraries. The 64-LQFP industrial-grade package supports the long product lifetimes typical of security installations. Battery-backed operation is achievable by leveraging the low-power modes documented in the Flexis QE reference manual.
推薦
Home Appliance Controllers
Washing machines, dishwashers, and small kitchen appliances use the MCF51QE32CLH as a cost-optimized main controller. The ColdFire V1 core handles user interface logic, motor sequencing, and sensor monitoring concurrently. SCI/SPI/I2C peripherals interface with display modules and Wi-Fi co-processors for smart-appliance variants. The single-rail 2.5V/3.3V supply simplifies power tree design, while the 64-LQFP package accommodates the multi-layer PCBs common in appliance designs.
推薦
Smart Sensor Edge Nodes
Industrial sensor hubs leverage the MCF51QE32CLH for edge processing of analog and digital sensor inputs before forwarding to a gateway. The ColdFire V1 core runs averaging and threshold logic on ADC samples, while SCI/SPI transmit results. The 32KB Flash accommodates calibration tables and protocol firmware for Modbus or similar industrial networks. Pin compatibility with the S08 Flexis siblings allows scaling cost across product variants.
推薦
Battery-Powered Portable Devices
Battery-powered data loggers, handheld instruments, and portable medical accessories use the MCF51QE32CLH for its single-rail operation and moderate compute. The on-chip voltage regulator supports direct Li-ion or 2xAA battery connection. Low-power modes documented in the QE reference manual allow deep-sleep currents suitable for months-long deployments. The 50MHz ColdFire V1 core wakes quickly to capture sensor bursts before returning to sleep, optimizing battery life in duty-cycled applications.
推薦
Automotive Body Electronics (Legacy)
Legacy automotive body controllers (window lifts, mirror adjusters, interior lighting) historically used the MCF51QE32CLH and Flexis siblings. While not AEC-Q100 qualified, it remains in service designs through last-time-buy inventory. The ColdFire V1 core handles PWM lighting and brushed motor sequencing reliably. New automotive designs should use AEC-Q100 qualified Kinetis or S32K parts instead, but the MCF51QE32CLH is a known quantity for sustaining legacy vehicle platforms.
推薦
推薦產品摘要
工程參考資料，適用於 MCF51QE32CLH — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | MCF51QE32LH | MCF51QE64LH | MCF51QE128CLH | MC9S08QE32CLC | S9S08QE32F1MLC |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 64-LQFP (10x10) | 64-LQFP (10x10) - same | 64-LQFP (10x10) - same | 64-LQFP (10x10) - same | 64-LQFP - same | 64-LQFP - same |
| Core Architecture | ColdFire V1 (32-bit) | ColdFire V1 (32-bit) | ColdFire V1 (32-bit) | ColdFire V1 (32-bit) | S08 (8-bit) | S08 (8-bit) |
| Flash Memory | 32 KB | 32 KB | 64 KB | 128 KB | 32 KB | 32 KB |
| Maximum CPU Speed | 50.33 MHz | 50.33 MHz | 50.33 MHz | 50.33 MHz | 50 MHz | 50 MHz |
| Operating Voltage | 1.8V to 3.6V | 1.8V to 3.6V | 1.8V to 3.6V | 1.8V to 3.6V | 1.8V to 3.6V | 1.8V to 3.6V |
| Flexis Pin-Compatible | Yes (32-bit tier) | Yes | Yes | Yes | Yes (8-bit tier) | Yes (8-bit tier) |
| Lifecycle Status | Last-time-buy | Last-time-buy | Last-time-buy | Last-time-buy | Active | Active |
主要差異化特點
- Flexis 32-bit ColdFire V1 core in 8-bit compatible footprint (對比MC9S08QE32CLC)
- Higher Flash density at same footprint (對比MCF51QE64LH)
- Quadruple Flash option in same package (對比MCF51QE128CLH)
設計說明
The MCF51QE32CLH integrates an on-chip voltage regulator that allows single-rail operation from 2.5V or 3.3V. Place a 0.1uF ceramic decoupling capacitor as close as possible to each VDD/VSS pin pair (typically pins 5/6, 59/60, 63/64) to minimize supply transients during ColdFire V1 core switching. AVSS and VSSA must be tied to a clean ground plane separate from noisy digital returns to preserve ADC accuracy.
At 50.33MHz with 1.8-3.6V supply, the ColdFire V1 core typically dissipates 30-50mW under typical workloads. The 64-LQFP (10x10) package has adequate thermal mass for industrial temperature operation without heatsinking, but in enclosed appliance housings the designer should verify junction temperature does not exceed 100C at worst-case ambient. Reduce CPU clock or duty cycle if thermal headroom is insufficient.
Route the analog supply (VDDA, VREFH) with a separate trace from digital VDD and add a ferrite bead or small L-C filter between VDD and VDDA to prevent digital switching noise coupling into ADC measurements. Keep analog input traces short and guarded by VSSA on both sides. The BKGD pin (pin 58) requires a 4.7k-10k pull-up to VDD for background debug mode operation.
Do not exceed 3.6V on any VDD pin - the ColdFire V1 core is not 5V tolerant. Configure unused I/O pins as outputs driving low or as inputs with internal pull-ups enabled to prevent floating input leakage. When migrating from S08QE to MCF51QE32CLH, recompile all code for ColdFire V1 toolchain - object code is not portable between the two cores despite shared pinout.
合規資訊
RoHS, REACH, lead-free and halogen-free status were not provided in the verified web data. AEC-Q100 is not applicable - this part is industrial-grade and not automotive-qualified. Refer to manufacturer product page for compliance documentation.