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NXP Semiconductors MCF51QE128CLK
- Part No.:
- MCF51QE128CLK
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
MCF51QE128CLK.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,210
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Product details
Overview
MCF51QE128CLK from NXP Semiconductors (formerly Freescale) is a 32-bit ColdFire V1 microcontroller designed for ultra-low-power embedded control in battery-powered and energy-sensitive applications. It features a 50.33-MHz CPU (at ≥2.4V), 128 KB flash, 8 KB RAM, 24-channel 12-bit ADC, dual analog comparators, dual I²C/SPI/SCI interfaces, six-channel TPM, RTC, and rapid GPIO - all operating down to 1.8V supply voltage.
For engineers reviewing the MCF51QE128CLK datasheet, MCF51QE128CLK pinout, MCF51QE128CLK application, or MCF51QE128CLK equivalent, key selection criteria include its stop3-mode current (0.8–1.3 µA), integrated low-power oscillator support, 1.8–3.6 V operation, 70 GPIOs with configurable drive strength and hysteresis, and ColdFire ISA_C instruction set compatibility for deterministic real-time control.
Technical Context
The MCF51QE128CLK implements the ColdFire V1 CPU core with Instruction Set Revision C (ISA_C), delivering 0.94 Dhrystone MIPS/MHz from internal RAM. Its power management includes two stop modes (Stop2/Stop3), reduced-power wait mode, and peripheral clock gating - enabling selective module disable while retaining RTC, ACMP, and ADC functionality in Stop3.
Clock generation combines an external crystal/ceramic resonator (31.25 kHz–16 MHz) with an internal FLL-based ICS offering ±0.2% trimming resolution and 2–50.33 MHz output. Analog subsystems include a 12-bit 24-channel ADC with 2.5 µs conversion time, internal bandgap reference (1.17 V), and temperature sensor (1.7 mV/°C), all functional in Stop3 mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ColdFire V1 (ISA_C); enables deterministic real-time execution and legacy ColdFire software compatibility |
| Max Clock Frequency | 50.33 MHz at VDD ≥ 2.4 V; supports high-throughput control loops without external PLL |
| Flash / RAM | 128 KB flash (programmable over full voltage/temp range) + 8 KB RAM with security lock |
| ADC | 24-channel, 12-bit SAR; 2.5 µs conversion; operates in Stop3 mode with internal bandgap reference |
| Power Modes | Stop2 (0.6–0.8 µA), Stop3 (0.8–1.3 µA), Wait (0.73–13.7 mA); wake-up in ≤6 µs from stop |
| I/O Count | 70 GPIOs (including 16 Rapid GPIO bits on local bus), with programmable pull-up, slew rate, and drive strength |
| Peripherals | Dual I²C (100 kbps), dual SPI (full-duplex/single-wire), dual SCI (LIN-capable), triple TPM (3+3+6 channels), RTC, ACMPx×2 |
Pinout & Package
Package: 80-pin LQFP (Case 917A, 14 mm²). Pinout validated per Freescale MCF51QE128 Rev. 7 datasheet Figures 2 and Table 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PTA0–PTA7, PTB0–PTB7, PTC0–PTC7, PTD0–PTD7, PTE0–PTE7, PTF0–PTF7, PTG0–PTG7, PTJ0–PTJ7, PTH0–PTH7 | Multi-function GPIO ports | 70 general-purpose I/O pins with alternate functions (ADC, TPM, SCI, SPI, I²C, ACMP, KBI); 16 mapped to ColdFire Rapid GPIO for atomic SET/CLR/TOGGLE |
| VDD / VSS / VDDA / VSSA / VREFH / VREFL | Power and reference rails | Dual-supply domain (digital/analog); separate analog ground/power and precision 1.17 V bandgap reference input |
| EXTAL / XTAL | External oscillator inputs | Supports 31.25 kHz–16 MHz crystal/resonator; enables precise timing and low-jitter clock source |
| BKGD / MS | Background debug interface | Single-wire debug port for programming, breakpointing, and trace buffer access without halting CPU |
| RESET / IRQ / TPMxCLK | System control signals | Asynchronous reset with LVD/COP protection; dedicated interrupt request; flexible timer clock sourcing |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power Stop3 mode | 0.8–1.3 µA typical current draw with RTC, ACMP, and ADC active - enables multi-year battery life in sensing nodes |
| Integrated analog subsystem | 24-channel 12-bit ADC + dual ACMP + on-chip temperature sensor + 1.17 V bandgap reference - eliminates external signal-conditioning ICs |
| Rapid GPIO architecture | 16-bit shadowed GPIO registers accessible via CPU local bus with atomic set/clear/toggle - eliminates read-modify-write latency in real-time I/O |
| FLL-based internal clock source (ICS) | ±0.2% trimming resolution and 2–50.33 MHz output - reduces BOM cost by eliminating external crystal in non-critical timing apps |
| Security circuitry | Flash and RAM content protection against unauthorized read-out - meets basic firmware IP protection requirements |
Applications
| Smart Utility Metering | Industrial Sensor Node |
|---|---|
Use Scenario: Battery-powered electricity/water/gas meter with metrology, tamper detection, and wireless reporting. IC Role / Device Role / Timing Role: Primary system controller executing metrology algorithms, managing ADC sampling, timestamping events via RTC, and handling LIN/SCI communication to concentrator. Use Value: Stop3-mode current (0.8 µA) and RTC accuracy enable >10-year battery life; 24-channel ADC supports multi-sensor integration (voltage, current, temperature, pressure). | Use Scenario: Wireless vibration/temperature/humidity node in predictive maintenance systems deployed in harsh factory environments. IC Role / Device Role / Timing Role: Edge data acquisition unit performing analog signal conditioning, threshold-triggered wake-up via ACMP, and time-stamped event logging using RTC. Use Value: Dual ACMP with edge-triggered interrupts allows zero-power monitoring of analog thresholds; 1.8 V minimum operation ensures reliability during brownout conditions. |
| Automotive Body Control Module | Medical Portable Monitor |
Use Scenario: Low-cost door/window/mirror control module requiring LIN communication, PWM lighting control, and fault diagnostics. IC Role / Device Role / Timing Role: LIN slave node managing window lift motors, mirror positioning, and interior lighting via TPM-generated PWM. Use Value: Built-in LIN master/slave break generation/detection eliminates external transceiver; 6-channel TPM supports independent motor control and LED dimming. | Use Scenario: Handheld ECG/SpO₂ monitor with analog front-end, battery management, and Bluetooth HCI interface. IC Role / Device Role / Timing Role: Signal acquisition controller running ADC at 1 kS/s, computing real-time metrics, and buffering data for wireless transmission. Use Value: 12-bit ADC with internal reference and temperature sensor enables calibrated biopotential measurement; 8 KB RAM supports on-device FFT processing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Kinetis KL26Z128VLH4 | ARM Cortex-M0+ core, 48 MHz max, 128 KB flash, 16 KB RAM, 16-bit ADC (but only 12 channels), no integrated RTC oscillator | Lacks integrated low-power 1 kHz RTC oscillator and Stop3-equivalent ultra-low-power mode (<1 µA) | Preferred when ARM ecosystem tooling and USB stack are required; less suitable for multi-year battery operation |
| MSP430F5529IPN | 16-bit RISC core, 25 MHz max, 128 KB flash, 8 KB RAM, 12-bit ADC (12 channels), integrated RTC oscillator | Lower CPU performance (MIPS/MHz), no ColdFire ISA compatibility, fewer peripherals (single I²C/SPI/SCI) | Valid alternative for simple sensing tasks where ColdFire software reuse is not needed and lower cost is critical |
Compared with Kinetis KL26Z128VLH4 and MSP430F5529IPN, the MCF51QE128CLK delivers superior ultra-low-power operation in Stop3 mode, higher analog channel count, and ColdFire software continuity - making it optimal for long-life, mixed-signal embedded control where deterministic real-time response and legacy code reuse matter.
Availability
MCF51QE128CLK is available at Aetrix Electronics and suitable for smart utility metering, industrial sensor nodes, automotive body control modules, and portable medical monitors requiring stable component supply across extended product lifecycles.
Supply support for MCF51QE128CLK includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, IoT, mobile, and communication infrastructure markets.
The MCF51QE128CLK belongs to NXP's ColdFire Qorivva family - engineered for energy-efficient, real-time embedded control in safety-aware and battery-constrained applications, with emphasis on analog integration and ultra-low-power operation.
FAQ
What is the minimum operating voltage for the MCF51QE128CLK?
The MCF51QE128CLK operates down to 1.8 V across the full temperature range (–40°C to +85°C), enabling reliable function during brownout conditions and extending battery life in portable systems. At 1.8 V, the CPU runs at up to 20 MHz, and all peripherals-including ADC, ACMP, RTC, and GPIO-remain fully functional. This specification is guaranteed per Freescale MCF51QE128 Rev. 7 datasheet Section 3.6.
Does the MCF51QE128CLK support debugging without halting program execution?
Yes, the MCF51QE128CLK features a single-wire background debug (BKGD) interface that allows full visibility into CPU state, memory, and registers without stopping the core. It supports four PC plus two address breakpoint registers, a 64-entry trace buffer, and programmable trigger responses - enabling real-time debugging of time-critical applications. This capability is documented in the MCF51QE128CLK datasheet Section "Development Support".
Can the MCF51QE128CLK perform analog-to-digital conversions while in low-power stop mode?
Yes, the MCF51QE128CLK supports full ADC operation-including 24-channel scanning, auto-compare, and internal temperature sensing-in Stop3 mode. The ADC uses the internal bandgap reference (1.17 V) and achieves 2.5 µs conversion time even at 1.8 V supply. This capability enables continuous sensor monitoring with sub-µA system current, as confirmed in the MCF51QE128CLK datasheet Sections 3.12 and "Power-Saving Modes".
What clock sources are available on the MCF51QE128CLK?
The MCF51QE128CLK provides two primary clock sources: an external crystal/resonator interface (XOSC) supporting 31.25 kHz–16 MHz, and an internal FLL-controlled clock source (ICS) with factory-trimmed reference (±0.2% resolution). The ICS generates CPU clocks from 2–50.33 MHz and supports automatic failover. Both sources are detailed in the MCF51QE128CLK datasheet Section 3.8 and 3.9.
How many GPIO pins does the MCF51QE128CLK have, and what advanced I/O features are supported?
The MCF51QE128CLK provides 70 GPIO pins (plus one input-only and one output-only pin), with 16 bits shadowed as Rapid GPIO for atomic SET/CLR/TOGGLE operations via the CPU local bus. All digital inputs support programmable hysteresis and pull-up resistors (17.5–52.5 kΩ), and outputs support configurable drive strength and slew rate. These features are specified in the MCF51QE128CLK datasheet Section "Input/Output" and Table 8.
MCF51QE128CLK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 80-LQFP
- Series:
- MCF51QE
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- Coldfire V1
- Core Size:
- 32-Bit Single-Core
- Speed:
- 50MHz
- Connectivity:
- I2C, SCI, SPI
- Peripherals:
- LVD, PWM, WDT
- Number of I/O:
- 70
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 24x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MCF51QE128CLK FAQ
1.How can I place an order for MCF51QE128CLK through Aetrix?
Please submit a Request for Quotation (RFQ) for MCF51QE128CLK on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MCF51QE128CLK reliable?
The price and inventory of MCF51QE128CLK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCF51QE128CLK is usually 5 days.
3.What payment methods are accepted for MCF51QE128CLK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCF51QE128CLK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCF51QE128CLK?
MCF51QE128CLK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCF51QE128CLK order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MCF51QE128CLK?
For technical support, including MCF51QE128CLK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCF51QE128CLK requirements.
6.How does Aetrix verify that MCF51QE128CLK is sourced from the original manufacturer or authorized distributors?
All MCF51QE128CLK products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MCF51QE128CLK meets industry standards.
7.What is the process for return or replacement of MCF51QE128CLK?
All MCF51QE128CLK units undergo pre-shipment inspection (PSI). If there is an issue with MCF51QE128CLK, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MCF51QE128CLK part is unused and in its original packaging.
Return procedure for MCF51QE128CLK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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