MK22FX512AVLK12 - Kinetis K22 120MHz Cortex-M4F MCU | NXP
MPN: MK22FX512AVLK12 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $14.78 | $14.78 |
| 10 | $13.31 | $133.10 |
| 100 | $11.42 | $1,142.00 |
| 500 | $9.96 | $4,980.00 |
| 1,000 | $8.85 | $8,850.00 |
MK22FX512AVLK12 Overview
A microcontroller (MCU) is a System-on-Chip that combines a processor core, program and data memory, a rich set of peripherals, and I/O interfaces into a single device. Kinetis K22F sub-family MCUs specifically target cost-sensitive applications that require a balance of low power, peripheral flexibility, and processing efficiency, sitting within the broader Kinetis family hierarchy (Kinetis -> ARM Cortex-M -> 32-bit MCU -> microcontroller -> semiconductor). The MK22FX512AVLK12 is the industry workhorse variant of this family, widely used in industrial control, USB peripherals, and human-machine interface subsystems.
Key features include an integrated 16-bit ADC with multiple conversion modes, high-speed comparators, FlexTimers with PWM, low-power UART and I2C peripherals, a real-time clock, and a comprehensive clocking scheme. The Cortex-M4F core delivers 1.25 Dhrystone MIPS per MHz with hardware single-precision floating-point acceleration, deterministic interrupt response, and optional DSP extensions. The MCU supports a wide operating voltage range from 1.71 V to 3.6 V and offers multiple low-power modes down to deep-sleep for battery-powered products.
Typical applications include industrial control and human-machine interface (HMI) panels, USB HID peripherals such as keyboards and scanners, smart energy metering, point-of-sale terminals, and medical instrumentation. The combination of USB 2.0 full-speed, ample SRAM, and an ADC-rich analog mix-in allows the device to bridge wired connectivity and analog signal acquisition in a single chip.
When designing with the MK22FX512AVLK12, ensure all VDD/VSS pin pairs are decoupled with a 100 nF X7R ceramic capacitor placed within 5 mm of each pair, and reserve an additional 4.7 uF bulk capacitor near the MCU to handle USB inrush events. Route the 16-bit data bus with impedance-controlled traces if DDR-like external memory is added, although on-chip memory is usually sufficient.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives (same 80-LQFP footprint), and practical layout/design notes that streamline BOM management and selection decisions beyond the manufacturer datasheet.
Drop-in alternatives for MK22FX512AVLK12 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MK22FX512AVLK12 (same form factor and footprint) — differing in Package, ADC, USB, Maximum CPU Frequency, SRAM.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MK22FX512VLK12
✅ Drop-In📋 Reference alternative (not in catalog)
MK22FN512VLK12
✅ Drop-In📋 Reference alternative (not in catalog)
MK10DX256VLK7
✅ Drop-In📋 Reference alternative (not in catalog)
MK21DN512AVLK5
✅ Drop-In✓ In Stock
$4.8 / Unit
View Datasheet →MK30DX256VLK7
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →MK22FX512AVLK12 Maximum Ratings & Electrical Characteristics
| Core Architecture | ARM Cortex-M4F (32-bit) |
| Maximum CPU Frequency | 120 MHz |
| FPU / DSP | Hardware single-precision FPU + DSP instructions |
| Program Flash | 512 KB |
| FlexMemory (FlexNVM + FlexRAM) | 128 KB |
| On-chip SRAM | 128 KB |
| Supply Voltage Range | 1.71 V to 3.6 V |
| Operating Temperature | -40C to +105C |
| USB Controller | USB 2.0 Full-Speed OTG with on-chip transceiver |
| ADC | 16-bit SAR ADC (multi-channel) |
| Timers / PWM Channels | FlexTimer, PWM, RTC |
| Package | 80-pin LQFP (12x12 mm, 0.5 mm pitch) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
MK22FX512AVLK12 Pin Configuration
| Pin 1 | PTE0 — Port E bit 0, alternate function: UART1_TX / SPI1_PCS1 / RTC_CLKOUT |
| Pin 2 | PTE1 — Port E bit 1, alternate function: UART1_RX / SPI1_SOUT / SPI1_SIN |
| Pin 3 | PTE2 — Port E bit 2, alternate function: UART1_CTS_b / SPI1_SCK / SPI1_SIN |
| Pin 4 | PTE3 — Port E bit 3, alternate function: UART1_RTS_b / SPI1_SIN / SPI1_SOUT |
| Pin 5 | PTE4 — Port E bit 4, alternate function: SPI1_PCS0 |
| Pin 6 | PTE5 — Port E bit 5, alternate function: SPI1_PCS2 / UART3_TX |
| Pin 7 | PTE6 — Port E bit 6, alternate function: SPI1_PCS3 / UART3_RX |
| Pin 8 | VDD — Digital supply voltage (1.71 V to 3.6 V) |
| Pin 9 | VSS — Digital ground |
| Pin 10 | PTA0 — Port A bit 0, JTAG_TCLK / SWD_CLK |
| Pin 11 | PTA1 — Port A bit 1, JTAG_TDI |
| Pin 12 | PTA2 — Port A bit 2, JTAG_TDO |
| Pin 13 | PTA3 — Port A bit 3, JTAG_TMS / SWD_DIO |
| Pin 14 | PTA4 — Port A bit 4, NMI_b |
| Pin 15 | PTA5 — Port A bit 5, JTAG_TRST_b |
| Pin 16 | PTA18 — Port A bit 18, EXTAL0 (crystal oscillator input) |
| Pin 17 | PTA19 — Port A bit 19, XTAL0 (crystal oscillator output) |
| Pin 18 | VDDA — Analog supply voltage |
| Pin 19 | VREFH — ADC voltage reference high |
| Pin 20 | VREFL — ADC voltage reference low |
| Pin 21 | VSSA — Analog ground |
| Pin 22 | PTA20 — Port A bit 20, RESET_b |
| Pin 23 | PTB0 — Port B bit 0, ADC0_SE4 / EXTRG_IN |
| Pin 24 | PTB1 — Port B bit 1, ADC0_SE5 / EXTRG_OUT |
| Pin 25 | PTB2 — Port B bit 2, ADC0_SE6 |
| Pin 26 | PTB3 — Port B bit 3, ADC0_SE7 |
| Pin 27 | PTB4 — Port B bit 4, GPIO |
| Pin 28 | PTB5 — Port B bit 5, GPIO |
| Pin 29 | PTB6 — Port B bit 6, GPIO |
| Pin 30 | PTB7 — Port B bit 7, GPIO |
| Pin 31 | PTB8 — Port B bit 8, GPIO |
| Pin 32 | PTB9 — Port B bit 9, GPIO |
| Pin 33 | PTB10 — Port B bit 10, GPIO |
| Pin 34 | PTB11 — Port B bit 11, GPIO |
| Pin 35 | VSS — Digital ground |
| Pin 36 | VDD — Digital supply voltage |
| Pin 37 | PTC0 — Port C bit 0, GPIO / EXTRG_IN |
| Pin 38 | PTC1 — Port C bit 1, GPIO / EXTRG_OUT |
| Pin 39 | PTC2 — Port C bit 2, GPIO / CMP1_OUT |
| Pin 40 | PTC3 — Port C bit 3, GPIO / CMP0_OUT |
| Pin 41 | PTC4 — Port C bit 4, GPIO / LLWU_P8 |
| Pin 42 | PTC5 — Port C bit 5, GPIO / LLWU_P9 |
| Pin 43 | PTC6 — Port C bit 6, GPIO / CMP2_IN3 |
| Pin 44 | PTC7 — Port C bit 7, GPIO / CMP3_IN3 |
| Pin 45 | PTC8 — Port C bit 8, GPIO / I2S0_MCLK |
| Pin 46 | PTC9 — Port C bit 9, GPIO / FTM2_CH6 |
| Pin 47 | PTC10 — Port C bit 10, GPIO / I2C1_SDA |
| Pin 48 | PTC11 — Port C bit 11, GPIO / I2C1_SCL |
| Pin 49 | PTC12 — Port C bit 12, GPIO / FTM3_CH0 |
| Pin 50 | PTC13 — Port C bit 13, GPIO / FTM3_CH1 |
| Pin 51 | PTC14 — Port C bit 14, GPIO / FTM3_CH2 |
| Pin 52 | PTC15 — Port C bit 15, GPIO / FTM3_CH3 |
| Pin 53 | VSS — Digital ground |
| Pin 54 | VDD — Digital supply voltage |
| Pin 55 | PTD0 — Port D bit 0, GPIO / SPI0_PCS0 |
| Pin 56 | PTD1 — Port D bit 1, GPIO / SPI0_SCK |
| Pin 57 | PTD2 — Port D bit 2, GPIO / SPI0_SOUT |
| Pin 58 | PTD3 — Port D bit 3, GPIO / SPI0_SIN |
| Pin 59 | PTD4 — Port D bit 4, GPIO / FTM0_CH4 |
| Pin 60 | PTD5 — Port D bit 5, GPIO / FTM0_CH5 / UART2_RX |
| Pin 61 | PTD6 — Port D bit 6, GPIO / FTM0_CH6 / UART2_TX |
| Pin 62 | PTD7 — Port D bit 7, GPIO / FTM0_CH7 |
| Pin 63 | PTD8 — Port D bit 8, GPIO / I2C0_SCL |
| Pin 64 | PTD9 — Port D bit 9, GPIO / I2C0_SDA |
| Pin 65 | PTD10 — Port D bit 10, GPIO |
| Pin 66 | PTD11 — Port D bit 11, GPIO / FTM3_CH5 |
| Pin 67 | PTD12 — Port D bit 12, GPIO / FTM3_CH6 |
| Pin 68 | PTD13 — Port D bit 13, GPIO / FTM3_CH7 |
| Pin 69 | PTD14 — Port D bit 14, GPIO |
| Pin 70 | PTD15 — Port D bit 15, GPIO |
| Pin 71 | USB0_DP — USB D+ (Full-Speed OTG data plus line) |
| Pin 72 | USB0_DM — USB D- (Full-Speed OTG data minus line) |
| Pin 73 | VOUT33 — USB transceiver regulator output, requires decoupling cap |
| Pin 74 | VREGIN — USB transceiver regulator input (5 V tolerant) |
| Pin 75 | PTE16 — Port E bit 16, GPIO |
| Pin 76 | PTE17 — Port E bit 17, GPIO |
| Pin 77 | PTE18 — Port E bit 18, GPIO |
| Pin 78 | PTE19 — Port E bit 19, GPIO |
| Pin 79 | PTE20 — Port E bit 20, GPIO |
| Pin 80 | VSS — Digital ground |
Typical Applications
MK22FX512AVLK12 is suitable for 7 applications: Industrial Human-Machine Interface (HMI), USB HID Peripherals (Keyboard, Scanner, Gamepad), Smart Energy Metering, Point-of-Sale (POS) Terminal, Medical Instrumentation (Patient Monitor Peripheral), Industrial Sensor Hub / IO-Link Gateway, Building Automation Controller.
Industrial Human-Machine Interface (HMI)
The MK22FX512AVLK12's 120 MHz Cortex-M4F with FPU, 512 KB flash, 128 KB SRAM, and 80 GPIO at -40C to +105C make it well suited for industrial HMI panels. The 16-bit ADC handles analog input from sensors, while the FlexTimer modules generate PWM for backlight dimming and buzzer control. Its 80-LQFP exposes ample I/O for matrix keypads, character LCDs, or small TFT displays. In the design, engineers typically pair the MCU with an SPI or parallel display controller and route I2C/SPI for nonvolatile memory backup. The -40C to +105C rating covers factory floors; a 16-bit ADC + DMA path provides noiseless analog sensing for process control.
Recommended
USB HID Peripherals (Keyboard, Scanner, Gamepad)
The MK22FX512AVLK12 integrates USB 2.0 Full-Speed OTG with an on-chip transceiver and 128 KB of SRAM, which is more than enough to host a USB HID stack alongside application logic. At 120 MHz, the Cortex-M4F handles HID descriptor parsing, key matrix scanning, and LED/display updates with margin. The device operates from 3.3 V USB bus power with simple LDO regulation, and the 80-LQFP offers enough GPIO for matrix keyboards up to 8x16 without external logic. Designers typically route the USB D+/D- to the integrated transceiver, add a 1.5 kohm pull-up on D+ for full-speed enumeration, and rely on the flex timer for key debounce timing.
Recommended
Smart Energy Metering
The MK22FX512AVLK12's 120 MHz computational headroom, 16-bit ADC, and 512 KB flash support metering algorithms such as RMS calculation, harmonic analysis, and tamper detection. The MCU's real-time clock and low-power Stop mode enable sleep-mode metering for battery-auxiliary meters. The wide 1.71 V to 3.6 V supply range tolerates battery-backup transitions, and the 80-LQFP offers isolation-friendly pinout for current-sense and voltage-sense channels. Typical designs use 4-8 ADC channels for voltage and current sensing, plus a UART/IrDA link for handheld readout. The FPU accelerates DSP-style power-calculations.
Recommended
Point-of-Sale (POS) Terminal
The MK22FX512AVLK12's 512 KB flash hosts full TCP/IP or USB stacks while 128 KB SRAM buffers transactions, making it a fit for compact POS terminals. The Cortex-M4F handles encryption, secure keypad input, and LCD control, plus the integrated USB OTG drives printers or external readers. The 80-LQFP exposes enough GPIO for 4x4 keypads, character displays, and serial peripherals, while 16-bit ADC readings monitor battery or supply rail. Typical designs use SPI for an SD card slot, UART for a magnetic-stripe reader, and I2C for an RTC. Drop-in compatibility with the K64FN series enables scaling POS designs up later.
Recommended
Medical Instrumentation (Patient Monitor Peripheral)
The MK22FX512AVLK12's 120 MHz Cortex-M4F with FPU executes numerical filtering, FFT, and DSP routines needed for medical peripherals like pulse-oximetry front-ends or infusion-pump controllers. The 16-bit ADC captures analog signals from front-end circuits, while the FPU accelerates calculations such as SpO2 ratio or moving-average filtering. The 512 KB flash holds BLE/wired stacks plus application code, and the wide operating temperature range supports hospital and field-deployment scenarios. Engineers typically design the MCU around a battery-backed supply, with low-power Stop mode enabling long shelf life.
Recommended
Industrial Sensor Hub / IO-Link Gateway
The MK22FX512AVLK12 serves as a master in sensor-hub designs, using its UART/SPI/I2C mix to aggregate multiple sensor slaves and the USB OTG to expose data upstream. With 512 KB flash, the MCU runs IO-Link or Modbus stacks, and the FPU accelerates any on-device analytics. The 80-LQFP has sufficient pins for 4-6 independent sensor channels. Designers typically use a step-down regulator from 24V industrial supply, with a TVS diode for surge protection on the bus pins. The same MCU can be the controller in a small PLC sub-system, driving relays through opto-isolated outputs.
Recommended
Building Automation Controller
The MK22FX512AVLK12's peripheral mix suits building-automation hubs that aggregate HVAC sensors, lighting controls, and access-control peripherals. Its 120 MHz performance allows multi-protocol handling (RS-485, I2C, SPI, USB), and the 512 KB flash enables full BACnet/Modbus firmware images. The 80-LQFP footprint fits compact DIN-rail modules, while the -40C to +105C temperature range handles unheated equipment rooms. The 16-bit ADC reads analog sensors like temperature and light, and 4-6 FlexTimer channels handle motorized damper or valve drive.
Recommended
Recommended Products Summary
Engineering reference data for MK22FX512AVLK12 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MK22FX512VLK12 | MK22FN512VLK12 | MK10DX256VLK7 | MK21DN512AVLK5 | MK30DX256VLK7 |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 80-LQFP (12x12 mm) | 80-LQFP (12x12 mm) - same | 80-LQFP (12x12 mm) - same | 80-LQFP (12x12 mm) - same | 80-LQFP (12x12 mm) - same | 80-LQFP (12x12 mm) - same |
| Core / Frequency | Cortex-M4F @ 120 MHz | Cortex-M4F @ 120 MHz | Cortex-M4F @ 120 MHz | Cortex-M4 @ 100 MHz | Cortex-M4 @ 50 MHz | Cortex-M4 @ 100 MHz |
| Program Flash | 512 KB | 512 KB | 512 KB | 256 KB | 512 KB | 256 KB |
| SRAM | 128 KB | 128 KB | 128 KB | 64 KB | 128 KB | 64 KB |
| USB Controller | USB 2.0 FS OTG with on-chip PHY | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | None (no USB) | USB 2.0 FS OTG |
| Operating Temperature | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C |
Key Differentiators
- Higher SRAM (128 KB) versus K21 counterpart (vs MK21DN512AVLK5)
- Newer 'A' silicon revision versus legacy FX/V (vs MK22FX512VLK12)
- Larger memory and USB versus K10DX256VLK7 (vs MK10DX256VLK7)
- Modernization path to MK22FN512VLK12 with same footprint (vs MK22FN512VLK12)
Design Notes
Decouple each VDD/VSS pin pair with a 100 nF X7R ceramic capacitor placed within 5 mm of each pin, and add a single 4.7 uF X5R bulk capacitor near the MCU. The VREGIN pin (74) for the on-chip USB regulator requires a 4.7 uF decoupling capacitor; failure to provide this can prevent USB enumeration. For designs without USB, VREGIN and VOUT33 can be left tied to VDD or both NC per the K22F reference manual.
Estimated: The 80-LQFP package has a theta_JA of approximately 40 C/W on a standard 4-layer FR4 board (per typical NXP Kinetis package thermal data). At maximum CPU activity (120 MHz, all peripherals enabled, USB active) the internal dissipation is approximately 150-300 mW, yielding a junction-to-ambient rise under 12 C on JEDEC-compliant test boards. Industrial designs above ambient +85 C may still require thermal vias under the exposed pad even on LQFP.
The external crystal pins (PTA18/PTA19) must be routed as short and symmetrical traces to the crystal load capacitors, with a guard ground ring. The USB D+/D- pair should be 90-ohm differential, length-matched to within 2 mm, and routed over a continuous ground plane for the Full-Speed OTG signal integrity. Keep JTAG/SWD traces away from switching regulator or motor driver lines to avoid debug-probe interference.
Do not leave the NMI_b pin (PTA4) floating; tie it to VDD through a 10 kohm resistor or pull-up. The USB pull-up resistor on D+ must be 1.5 kohm to VDD (or routed through the internal pull-up). The reset pin (PTA20/RESET_b) requires an external 10 kohm pull-up and a 100 nF decoupling cap for noise immunity; omitting the cap causes spurious resets under noisy supply conditions.
Compliance Information
RoHS and REACH compliance declared by NXP per the product page. K22F sub-family is not AEC-Q100 qualified; this MCU is intended for industrial / consumer applications, not automotive. Conflict minerals CMRT/EMRT available from NXP. Halogen-free status not explicitly confirmed by extracted data; mark as unknown per Data Authenticity Rule 10.
