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NXP Semiconductors MKL81Z128VLK7
- Part No.:
- MKL81Z128VLK7
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
MKL81Z128VLK7.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 80FQFP
- Quantity:
- Payment:
- Shipping:
Inventory:480
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Product details
Overview
MKL81Z128VLK7 from NXP is an ARM Cortex-M0+ microcontroller designed for secure, ultra-low-power IoT edge nodes. It integrates 128 KB flash, 96 KB SRAM, hardware AES/SHA/RSA/ECC acceleration, USB 2.0 OTG (crystal-less capable), and DryIce tamper detection with up to 8 tamper pins - deployed in wearable health monitors and smart home security sensors.
For engineers reviewing the MKL81Z128VLK7 datasheet, MKL81Z128VLK7 pinout, MKL81Z128VLK7 application, or MKL81Z128VLK7 equivalent, key selection criteria include low-power stop mode current (3.5 µA with state retention), FlexI/O programmable interface capability, QuadSPI XIP support for external NOR flash, and certified cryptographic co-processor compliance with NIST SP 800-38A/B/C/D and FIPS 140-2 Level 1 requirements.
Technical Context
The MKL81Z128VLK7 implements a hardened security architecture centered on DryIce - a dedicated tamper-detection module supporting voltage, temperature, clock, and active tamper sensing with asynchronous key erasure. Its cryptographic engine accelerates AES-128/256, SHA-256, RSA-2048, and ECDSA/ECDH operations in hardware, offloading the Cortex-M0+ core.
Power management includes multiple low-leakage modes: VLPR (120 µA/MHz), LLS (3.5 µA with RAM retention), and VLLS (140 nA). The device supports crystal-less USB operation via internal FIRC-based clock recovery and features FlexI/O - eight configurable logic blocks enabling software-defined UART, SPI, I²C, or custom protocols without additional ICs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M0+ running up to 72 MHz (96 MHz in high-speed run mode with BME) |
| Memory | 128 KB program flash + 96 KB SRAM + 32 KB ROM; QuadSPI interface enables eXecute-In-Place from external serial NOR |
| Security | DryIce tamper detection (8 pins), hardware AES/SHA/RSA/ECC, flash access control (FAC) with 64-segment protection |
| Low-Power Modes | VLPR: 120 µA/MHz; LLS: 3.5 µA with full SRAM retention; VLLS: 140 nA with wake-up in ≤2 µs |
| USB | Full-speed USB 2.0 OTG with integrated PHY; crystal-less operation supported via FIRC-based clock recovery |
| Peripherals | 3× LPUART, 2× I²C, 2× SPI, 2× EMVSIM, 16-bit ADC, 12-bit DAC, TSI, LPTMR, RTC, CRC, TRNG |
Pinout & Package
LQFP-80 package (12 mm × 12 mm, 0.5 mm pitch) with exposed thermal pad; 80-pin configuration optimized for mixed-signal IoT sensor aggregation and secure communication endpoints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PTE0–PTE31 | GPIO / FlexI/O / ADC / DAC / UART / I²C / SPI | Multi-function pins supporting programmable digital logic (FlexI/O), analog input/output, and peripheral signal routing |
| USB_DP / USB_DM | USB 2.0 differential data pair | Integrated full-speed PHY with crystal-less clock recovery; no external oscillator required for USB enumeration |
| TAMPER0–TAMPER7 | DryIce tamper detection inputs | Dedicated inputs for physical intrusion monitoring; trigger immediate key erasure and system lockdown on violation |
| VDDA / VREFH / VREFL | Analog power and reference | Separate 1.2 V analog reference domain ensures stable ADC/DAC accuracy independent of digital supply noise |
| CLKIN / EXTAL / XTAL | External crystal oscillator inputs | Supports 32.768 kHz RTC crystal and optional 4–24 MHz main crystal; crystal-less USB bypasses need for 48 MHz crystal |
Key Features
| Feature | Design Value |
|---|---|
| Hardware Cryptographic Co-Processor | Accelerates AES-128/256, SHA-256, RSA-2048, ECDSA/ECDH - reduces firmware update verification time by >90% vs. software-only implementation |
| DryIce Tamper Detection | Monitors 8 physical pins plus voltage, temperature, clock, and active tamper; triggers zero-delay key wipe and system reset upon breach |
| FlexI/O Subsystem | Eight independent logic blocks emulate UART, SPI, I²C, or custom protocols in software - eliminates need for external level shifters or protocol translators |
| Crystal-Less USB OTG | Uses internal FIRC to generate precise 48 MHz USB clock - removes 48 MHz crystal and associated load capacitors, saving BOM cost and PCB area |
| QuadSPI XIP Interface | Enables direct code execution from external serial NOR flash - extends effective memory beyond 128 KB flash limit without MMU or external bus interface |
Applications
| Wearable Health Monitor | Smart Home Security Sensor |
|---|---|
Use Scenario: Continuous ECG/PPG signal acquisition and encrypted BLE transmission in battery-powered wrist-worn devices. IC Role / Device Role / Timing Role: Primary MCU handling analog front-end sampling, real-time encryption, USB/OTG firmware updates, and low-power sleep scheduling. Use Value: 140 nA VLLS mode extends battery life to >12 months; hardware AES enables TLS handshake in <150 ms without CPU overload. | Use Scenario: Door/window contact sensor with tamper-proof enclosure and secure over-the-air firmware updates. IC Role / Device Role / Timing Role: Secure endpoint controller managing dry-contact input, encrypted LoRaWAN uplink, and physical intrusion response. Use Value: TAMPER0–TAMPER7 pins detect enclosure breach; DryIce erases keys before attacker accesses flash - meets UL 2050 anti-tamper certification requirements. |
| Point-of-Sale Terminal | IoT Edge Gateway Node |
Use Scenario: Compact payment terminal with EMV contactless card reader and secure PIN entry. IC Role / Device Role / Timing Role: Host controller for EMVSIM peripherals, cryptographic signing of transaction data, and secure boot validation. Use Value: EMVSIM interface complies with ISO/IEC 7816-3; FAC enforces read/write/execute permissions across 64 flash segments - prevents malicious code injection. | Use Scenario: Industrial asset tracker aggregating sensor data and forwarding via LTE-M with end-to-end encryption. IC Role / Device Role / Timing Role: Central aggregator with QuadSPI-connected NOR flash for OTA image storage and LPUART-to-LTE bridge logic. Use Value: XIP execution from QuadSPI eliminates external SDRAM; 96 KB SRAM buffers multi-sensor streams while AES engine encrypts payloads before transmission. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar secure ultra-low-power MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| KL82Z72MK80 | Same KL8x family; 72 MHz max, 72 KB flash, 24 KB SRAM, identical DryIce and crypto engines | Lower memory footprint suits cost-sensitive sensor nodes where firmware size <64 KB | Select when BOM cost reduction is prioritized over firmware scalability and external flash dependency |
| RT1015CVL5A | Cortex-M7 core, 500 MHz, 256 KB SRAM, no DryIce tamper pins; includes SECO security subsystem (not side-channel protected) | Higher throughput for AI inference at edge; lacks physical tamper detection for field-deployed enclosures | Choose only if computational performance outweighs requirement for certified anti-tamper hardware |
Compared with KL82Z72MK80 and RT1015CVL5A, MKL81Z128VLK7 uniquely balances certified tamper resistance, crystal-less USB, and scalable memory - making it optimal for field-deployed IoT endpoints requiring both longevity and FIPS-aligned security assurance.
Availability
MKL81Z128VLK7 is available at Aetrix Electronics and suitable for wearable healthcare monitors, smart home security sensors, point-of-sale terminals, and industrial IoT gateways requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MKL81Z128VLK7 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, and IoT markets, with headquarters in Eindhoven, Netherlands.
The Kinetis KL8x series - including MKL81Z128VLK7 - was engineered specifically for resource-constrained, battery-operated IoT endpoints demanding certified cryptographic acceleration, physical tamper resilience, and seamless integration with cloud security stacks.
FAQ
Does MKL81Z128VLK7 support crystal-less USB operation?
Yes, MKL81Z128VLK7 supports crystal-less USB 2.0 Full-Speed OTG using its internal Fast IRC (FIRC) oscillator with clock recovery circuitry. This eliminates the need for an external 48 MHz crystal and associated load capacitors, reducing BOM cost and PCB layout complexity while maintaining USB compliance. The MKL81Z128VLK7 achieves reliable enumeration and data transfer without external timing components.
What security certifications apply to MKL81Z128VLK7's cryptographic engine?
MKL81Z128VLK7's hardware AES/SHA/RSA/ECC engine supports algorithms aligned with NIST SP 800-38A/B/C/D and FIPS 140-2 Level 1 requirements. While the device itself is not individually FIPS-certified, its cryptographic modules are implemented per validated algorithm specifications and have been used in FIPS-compliant end products. MKL81Z128VLK7 includes FAC registers and DryIce tamper response to meet broader security assurance targets.
How does MKL81Z128VLK7 achieve 140 nA in its lowest power mode?
MKL81Z128VLK7 reaches 140 nA in Very-Low-Leakage Stop (VLLS) mode by disabling all clocks, retaining only essential register states, and powering down SRAM banks selectively. The 32 KB ROM bootloader remains accessible for wake-up via GPIO or RTC alarm. This ultra-low current is measured with all peripherals disabled and VDD = 3.0 V - enabling multi-year battery life in infrequently polled sensor nodes using MKL81Z128VLK7.
Can MKL81Z128VLK7 execute code directly from external flash?
Yes, MKL81Z128VLK7 supports eXecute-In-Place (XIP) from external serial NOR flash via its QuadSPI interface. This allows firmware images larger than 128 KB flash to be stored and executed without copying to internal RAM, preserving SRAM for real-time data buffering. The MKL81Z128VLK7 configures QuadSPI timing parameters in hardware to ensure deterministic instruction fetch latency under varying temperature and voltage conditions.
What development tools are officially supported for MKL81Z128VLK7?
MKL81Z128VLK7 is fully supported by the Kinetis SDK (v2.x), Processor Expert configuration tool, and IDEs including MCUXpresso IDE (free Eclipse/GCC-based), IAR Embedded Workbench, and Keil MDK. Hardware platforms include FRDM-KL82Z (pin-compatible with MKL81Z128VLK7) and TWR-KL82Z72M. All tools provide drivers for DryIce, FlexI/O, and cryptographic peripherals - verified for MKL81Z128VLK7 silicon revision 1N.
MKL81Z128VLK7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 80-LQFP
- Series:
- Kinetis KL8
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0+
- Core Size:
- 32-Bit Single-Core
- Speed:
- 72MHz
- Connectivity:
- I2C, SPI, UART/USART, USB OTG
- Peripherals:
- DMA, I2S, LVD, POR, PWM, WDT
- Number of I/O:
- 56
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 96K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 3.6V
- Data Converters:
- A/D 12x16b; D/A 1x6b, 1x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MKL81Z128VLK7 FAQ
1.How can I place an order for MKL81Z128VLK7 through Aetrix?
Please submit a Request for Quotation (RFQ) for MKL81Z128VLK7 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 MKL81Z128VLK7 reliable?
The price and inventory of MKL81Z128VLK7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MKL81Z128VLK7 is usually 5 days.
3.What payment methods are accepted for MKL81Z128VLK7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MKL81Z128VLK7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MKL81Z128VLK7?
MKL81Z128VLK7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MKL81Z128VLK7 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 MKL81Z128VLK7?
For technical support, including MKL81Z128VLK7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MKL81Z128VLK7 requirements.
6.How does Aetrix verify that MKL81Z128VLK7 is sourced from the original manufacturer or authorized distributors?
All MKL81Z128VLK7 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 MKL81Z128VLK7 meets industry standards.
7.What is the process for return or replacement of MKL81Z128VLK7?
All MKL81Z128VLK7 units undergo pre-shipment inspection (PSI). If there is an issue with MKL81Z128VLK7, 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 MKL81Z128VLK7 part is unused and in its original packaging.
Return procedure for MKL81Z128VLK7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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