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NXP Semiconductors MKE12Z256VLF7
- Part No.:
- MKE12Z256VLF7
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
MKE12Z256VLF7.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,250
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Product details
Overview
MKE12Z256VLF7 from NXP Semiconductors is an ARM® Cortex®-M0+ microcontroller operating up to 72 MHz, featuring 256 KB flash, 48 KB SRAM, and 42 GPIOs in a 48-pin LQFP package. It integrates a 12-bit 1 Msps ADC, three FlexTimers for PWM generation, and low-power peripherals including LPUART, LPSPI, and LPI2C - enabling robust motor control and industrial HMI applications.
For engineers reviewing the MKE12Z256VLF7 datasheet, MKE12Z256VLF7 pinout, MKE12Z256VLF7 application, or MKE12Z256VLF7 equivalent, key selection considerations include its 48-pin LQFP (7×7 mm) footprint, support for VLPS/Stop mode wake-up via CMP/LPTMR/ADC, and compatibility with Kinetis KE1xZ development tools and MCUXpresso SDK.
Technical Context
The MKE12Z256VLF7 implements a single-core ARM Cortex-M0+ executing Thumb®-2 instructions at up to 72 MHz, with NVIC supporting 32 interrupt vectors and 4 priority levels. Its system clock is managed by SCG with multiple sources: FIRC (48 MHz ±1%), SIRC (8/2 MHz ±3%), LPO (128 kHz), and external crystal (4–40 MHz).
Peripheral integration includes eDMA with DMAMUX routing up to 63 request sources across 8 channels, three independent FTM modules (each with up to 8 PWM channels), and dual TSI modules omitted in MKE12Z variants per ordering table - confirming absence of touch sensing in this specific part.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | ARM Cortex-M0+, 32-bit, up to 72 MHz - enables deterministic real-time control with Thumb-2 ISA efficiency. |
| Memory | 256 KB flash / 48 KB SRAM - supports complex firmware with retained RAM during VLPS mode. |
| ADC | 12-bit SAR, 1 Msps, 11 input channels - delivers high-speed analog acquisition for motor current/voltage sensing. |
| Timers | 3× FTM (PWM), 1× LPIT (4-channel), 1× LPTMR - provides precise timing for BLDC commutation and periodic wake-up. |
| Low-Power Modes | VLPR/VLPW/Stop/VLPS - achieves sub-μA retention current with selective peripheral operation (e.g., CMP active in VLPS). |
| I/O & Packaging | 42 GPIOs (6 high-drive), 48-pin LQFP (7×7 mm, 0.5 mm pitch) - compact footprint suitable for space-constrained industrial modules. |
| Communication | 3× LPUART, 1× LPSPI, 1× LPI2C - enables reliable low-power sensor networking and host interface without external level shifters. |
Pinout & Package
Package: 48-pin LQFP (7×7 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Supports 2.7–5.5 V operation; decoupling required per datasheet layout guidelines. |
| EXTAL/XTAL | Clock oscillator inputs | Accepts 4–40 MHz crystal; enables high-accuracy timing for UART baud rate stability. |
| RESET_b | Active-low reset input | Asynchronous reset with internal pull-up; compatible with open-drain reset supervisors. |
| SWD_CLK/SWD_DIO | Debug interface signals | Enables programming and real-time debugging via standard ARM Serial Wire Debug. |
| PTE0–PTE31 | GPIO port E pins | Configurable as digital I/O, ADC inputs, UART/LPUART/LPSPI/LPI2C functions - multiplexed per SIM_SOPT7 register settings. |
Key Features
| Feature | Design Value |
|---|---|
| Low-power operation | VLPS mode with <1.5 μA typical current while retaining SRAM and waking via CMP/ADC/LPTMR - extends battery life in portable sensors. |
| Motor control ready | Three FTM modules with deadtime insertion and fault protection - simplifies three-phase BLDC gate driver timing without external logic. |
| Analog integration | On-chip 12-bit ADC with hardware averaging and self-calibration - reduces need for external precision references in closed-loop control. |
| Robust debug | SWD interface with DWT and MTB - enables cycle-accurate profiling and trace capture for firmware optimization. |
| Secure boot | Flash security enabled via 0x40E field - prevents unauthorized memory access during SWD debug sessions. |
Applications
| Industrial Motor Control | Smart Sensor Node |
|---|---|
Use Scenario: Closed-loop speed/torque control of 3-phase BLDC motors in HVAC blowers or pump drives. IC Role / Device Role / Timing Role: Real-time PWM generation, current sensing via ADC, and thermal monitoring using internal temperature sensor. Use Value: Integrated FTM deadtime and ADC hardware triggers eliminate external timing ICs and reduce BOM cost by ~12% versus discrete solutions. | Use Scenario: Battery-powered environmental monitor logging temperature, humidity, and pressure over LoRaWAN. IC Role / Device Role / Timing Role: Low-power system orchestrator managing sensor readout, data preprocessing, and LPUART-to-LoRa bridge. Use Value: VLPS mode with LPUART active at 32 kHz SIRC enables 5-year battery life at 1-minute reporting intervals. |
| Programmable Logic Controller (PLC) I/O Module | Medical Infusion Pump Controller |
Use Scenario: DIN-rail mounted digital I/O expansion module with isolated inputs/outputs and Modbus RTU communication. IC Role / Device Role / Timing Role: Protocol handler for LPUART-based Modbus slave, GPIO management, and watchdog supervision. Use Value: Dual LPUART instances allow simultaneous Modbus RTU and diagnostics port - eliminates need for UART multiplexer IC. | Use Scenario: Safety-critical infusion pump requiring precise flow rate control and fault detection. IC Role / Device Role / Timing Role: Primary controller executing PID loop, driving stepper motor via FTM PWM, and validating ADC readings against CRC-protected calibration tables. Use Value: On-chip CRC module validates flash integrity before each dose calculation - satisfies IEC 62304 Class C software requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MKE13Z256VLF7 | Same core, memory, and package; adds 2× TSI modules (15 ch total) - absent in MKE12Z series per ordering table. | Required for capacitive touch HMI (e.g., medical device front panel); unnecessary if only GPIO/ADC needed. | Select MKE13Z256VLF7 only when TSI functionality is mandatory; otherwise MKE12Z256VLF7 offers lower cost and identical motor/sensor control capability. |
| MKE17Z256VLF7 | Same core, memory, and package; adds 2× TSI modules (31 ch total) and higher GPIO count (42 vs 42 - same count but different mux options). | Targeted at advanced HMI with multi-touch gesture support; no advantage for non-touch applications. | MKE17Z256VLF7 provides broader analog channel availability but incurs higher unit cost - choose only if TSI or additional ADC channels are required. |
Compared with MKE13Z256VLF7 and MKE17Z256VLF7, the MKE12Z256VLF7 delivers identical computational performance, memory, and low-power peripheral set while omitting TSI - reducing bill-of-materials cost and simplifying layout for non-touch applications such as motor drives and sensor concentrators.
Availability
MKE12Z256VLF7 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, and PLC I/O modules requiring stable component supply and long-term manufacturability.
Supply support for MKE12Z256VLF7 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 specializing in secure connectivity solutions for automotive, industrial, and IoT markets.
The Kinetis KE1xZ family - including MKE12Z256VLF7 - was designed for cost-sensitive, ultra-low-power industrial control applications demanding robust analog integration and extended temperature operation (–40 to 105 °C).
FAQ
What is the maximum operating frequency of the MKE12Z256VLF7?
The MKE12Z256VLF7 supports a maximum system clock frequency of 72 MHz using the Fast Internal Reference Clock (FIRC) or external crystal oscillator. This frequency is achievable in Run mode; VLPR mode limits operation to lower frequencies for reduced power consumption. All timing-critical peripherals - including FTM and ADC - are fully functional at 72 MHz, and the MKE12Z256VLF7 datasheet specifies timing parameters under these conditions.
Does the MKE12Z256VLF7 include touch sensing capability?
No, the MKE12Z256VLF7 does not include Touch Sensing Input (TSI) modules. Per the official NXP ordering information table, TSI channel counts are explicitly listed as "–" for all MKE12Z variants, distinguishing them from MKE13Z and MKE17Z parts which offer 15 or 31 TSI channels. The MKE12Z256VLF7 retains full GPIO, ADC, and comparator functionality for non-capacitive HMI implementations.
What low-power modes are supported by the MKE12Z256VLF7?
The MKE12Z256VLF7 supports six low-power modes: Run (RUN), Very Low Power Run (VLPR), Wait (WAIT), Very Low Power Wait (VLPW), Stop (STOP), and Very Low Power Stop (VLPS). In VLPS mode, the MKE12Z256VLF7 maintains SRAM retention while enabling wake-up via CMP, ADC, LPTMR, LPIT, LPUART, LPSPI, LPI2C, and GPIO interrupts - all verified in the KE1xZ reference manual section 2.1.8.
Can the MKE12Z256VLF7 be programmed and debugged using standard tools?
Yes, the MKE12Z256VLF7 supports Serial Wire Debug (SWD) via dedicated SWD_CLK and SWD_DIO pins, fully compatible with NXP's LPC-Link2, SEGGER J-Link, and CMSIS-DAP debug probes. It also includes Debug Watchpoint and Trace (DWT) and Micro Trace Buffer (MTB) for real-time instruction tracing. Development is streamlined using MCUXpresso IDE, which provides validated BSPs and drivers for the MKE12Z256VLF7 out of the box.
What is the ADC resolution and sampling rate of the MKE12Z256VLF7?
The MKE12Z256VLF7 integrates a single 12-bit successive approximation register (SAR) ADC with a maximum sampling rate of 1 Msps. It supports 11 external analog input channels, programmable sample time, hardware averaging, and self-calibration. Conversion results can trigger DMA transfers or generate interrupts, and the ADC remains operational in VLPS mode when clocked from SIRC or OSC - confirmed in the KE1xZ reference manual section 2.2.3.
MKE12Z256VLF7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 48-LQFP
- Series:
- Kinetis KE1xZ
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0+
- Core Size:
- 32-Bit
- Speed:
- 72MHz
- Connectivity:
- FlexIO, I2C, SPI, UART/USART
- Peripherals:
- DMA, LVD, PWM, WDT
- Number of I/O:
- 42
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 48K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 11x12b SAR; D/A 1x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MKE12Z256VLF7 FAQ
1.How can I place an order for MKE12Z256VLF7 through Aetrix?
Please submit a Request for Quotation (RFQ) for MKE12Z256VLF7 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 MKE12Z256VLF7 reliable?
The price and inventory of MKE12Z256VLF7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MKE12Z256VLF7 is usually 5 days.
3.What payment methods are accepted for MKE12Z256VLF7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MKE12Z256VLF7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MKE12Z256VLF7?
MKE12Z256VLF7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MKE12Z256VLF7 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 MKE12Z256VLF7?
For technical support, including MKE12Z256VLF7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MKE12Z256VLF7 requirements.
6.How does Aetrix verify that MKE12Z256VLF7 is sourced from the original manufacturer or authorized distributors?
All MKE12Z256VLF7 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 MKE12Z256VLF7 meets industry standards.
7.What is the process for return or replacement of MKE12Z256VLF7?
All MKE12Z256VLF7 units undergo pre-shipment inspection (PSI). If there is an issue with MKE12Z256VLF7, 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 MKE12Z256VLF7 part is unused and in its original packaging.
Return procedure for MKE12Z256VLF7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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