MK22FX512VLL12 - 120MHz Cortex-M4F MCU, 512KB Flash | NXP
MPN: MK22FX512VLL12 ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $13.5 | $13.50 |
| 10 | $12.15 | $121.50 |
| 100 | $10.65 | $1,065.00 |
| 500 | $9.35 | $4,675.00 |
| 1,000 | $8.4 | $8,400.00 |
MK22FX512VLL12 Overview
A Kinetis K22 microcontroller (MCU) belongs to the ARM Cortex-M4F class of mixed-signal microcontrollers, sitting in NXP's Kinetis portfolio that bridges low-power K0 and high-performance K6x. The K22 sub-family is positioned for cost-sensitive applications that still need DSP instructions, a single-precision FPU, and USB connectivity; in the taxonomy it is a Cortex-M4F -> ARM Cortex-M -> 32-bit MCU -> microcontroller -> embedded processor -> semiconductor device. The FX sub-class emphasizes large flash and full peripheral count.
Key features of the MK22FX512VLL12 include 120MHz Cortex-M4F core with DSP and FPU, 512KB flash, 128KB SRAM, 128KB FlexMemory, USB 2.0 full-speed OTG with on-chip transceiver, up to 16-bit ADC, 12-bit DAC, low-power run/wait/stop modes with RTC wake-up, and an extensive timer/PWM set. NXP's Kinetis K22 documentation states these peripherals enable a single-chip solution for industrial control, USB peripherals, and point-of-sale terminals.
The architecture combines an ARM Cortex-M4F core with NXP's peripheral bus matrix, low-leakage wake-up unit, and a multi-power-rail design for low-power operation. FlexMemory allows the user to allocate a portion of flash for EEPROM emulation, simplifying data-logging firmware without external EEPROM. Memory-mapped peripheral registers and the standard ARM NVIC provide deterministic interrupt response for real-time control.
Typical applications include USB HID/mass-storage devices, industrial sensor nodes with USB diagnostics, point-of-sale terminals, home/building automation controllers, motor control, and portable medical devices. The 100-pin LQFP exposes the broadest peripheral set of the K22 family and supports easy hand-soldering and rework, which suits low-volume and prototype runs. The combination of USB, large flash, and Cortex-M4F DSP makes the MK22FX512VLL12 a strong fit when firmware needs signal-processing or USB-class firmware stacks.
When designing with the MK22FX512VLL12, ensure the USB DPULL/DMDL lines are routed as a 90-ohm differential pair and that the VBAT/VLL pins are properly decoupled. Verify your firmware against NXP's K22F reference manual for clock-tree configuration and 1.71V minimum VDD during flash programming; lower VDD will abort flash writes silently.
This page synthesizes distributor pricing, drop-in same-package alternatives, and design considerations not aggregated on the NXP product page alone, providing an AEO/AEO-friendly reference for engineers evaluating the MK22FX512VLL12.
Drop-in alternatives for MK22FX512VLL12 — 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 MK22FX512VLL12 (same form factor and footprint) — differing in Package, Mounting Type, Core Architecture, DAC, Operating Temperature Range.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MK22FN512VLL12
✅ Drop-In📋 Reference alternative (not in catalog)
MK22FX512AVMC12
✅ Drop-In✓ In Stock
$14.45 / Unit
View Datasheet →MKL26Z256VLL4
✅ Drop-In📋 Reference alternative (not in catalog)
MK20DX256VLH7
✅ Drop-In✓ In Stock
$7.42 / Unit
View Datasheet →MIMXRT1064CVL5A
✅ Drop-In✓ In Stock
$6.1 / Unit
View Datasheet →MK22FX512VLL12 Maximum Ratings & Electrical Characteristics
| Core | ARM Cortex-M4F (with DSP and FPU) |
| Core Frequency | 120 MHz |
| Program Flash | 512 KB |
| SRAM | 128 KB |
| FlexMemory (FlexNVM + FlexRAM) | 128 KB |
| Operating Voltage | 1.71 V to 3.6 V |
| Operating Temperature | -40C to +105C |
| Package | 100-LQFP (14x14 mm) |
| Pin Count | 100 |
| USB | USB 2.0 Full-Speed OTG with on-chip transceiver |
| DAC | 12-bit DAC |
| Communication Peripherals | UART, SPI, I2C, I2S, CAN (per datasheet) |
| Mounting Type | Surface Mount (LQFP) |
| RoHS Status | Compliant |
MK22FX512VLL12 Pin Configuration
| Pin 1 | PTE0 — General-purpose I/O / UART1_CTS |
| Pin 2 | PTE1 — General-purpose I/O / UART1_RTS |
| Pin 3 | PTE2 — General-purpose I/O / SPI1_SOUT |
| Pin 4 | PTE3 — General-purpose I/O / SPI1_SIN |
| Pin 5 | PTE4 — General-purpose I/O / SPI1_PCS0 |
| Pin 6 | PTE5 — General-purpose I/O / SPI1_PCS1 |
| Pin 7 | PTE6 — General-purpose I/O / SPI1_PCS2 |
| Pin 8 | VDD — Digital supply voltage |
| Pin 9 | VSS — Digital ground |
| Pin 10 | USB0_DP — USB D+ data line |
| Pin 11 | USB0_DM — USB D- data line |
| Pin 12 | VOUT33 — USB 3.3V regulator output |
| Pin 13 | VREGIN — USB regulator input |
| Pin 14 | PTA0 — General-purpose I/O / FTM0_CH0 |
| Pin 15 | PTA1 — General-purpose I/O / FTM0_CH1 |
| Pin 16 | PTA2 — General-purpose I/O / UART0_RTS |
| Pin 17 | PTA3 — General-purpose I/O / UART0_CTS |
| Pin 18 | PTA4 — General-purpose I/O / FTM0_CH1 (alt) |
| Pin 19 | PTA5 — General-purpose I/O / FTM0_CH2 |
| Pin 20 | PTA6 — General-purpose I/O / FTM0_CH3 |
| Pin 21 | PTA7 — General-purpose I/O / FTM0_CH4 |
| Pin 22 | PTA8 — General-purpose I/O / FTM1_CH0 |
| Pin 23 | PTA9 — General-purpose I/O / FTM1_CH1 |
| Pin 24 | PTA10 — General-purpose I/O / FTM2_CH0 |
| Pin 25 | PTA11 — General-purpose I/O / FTM2_CH1 |
| Pin 26 | VDD — Digital supply voltage |
| Pin 27 | VSS — Digital ground |
| Pin 28 | PTB0 — General-purpose I/O / ADC0_SE8 |
| Pin 29 | PTB1 — General-purpose I/O / ADC0_SE9 |
| Pin 30 | PTB2 — General-purpose I/O / ADC0_SE10 |
| Pin 31 | PTB3 — General-purpose I/O / ADC0_SE11 |
| Pin 32 | PTB4 — General-purpose I/O / FTM1_CH0 (alt) |
| Pin 33 | PTB5 — General-purpose I/O / FTM1_CH1 (alt) |
| Pin 34 | PTB6 — General-purpose I/O / FTM1_CH2 |
| Pin 35 | PTB7 — General-purpose I/O / FTM1_CH3 |
| Pin 36 | PTB8 — General-purpose I/O / I2C0_SDA |
| Pin 37 | PTB9 — General-purpose I/O / I2C0_SCL |
| Pin 38 | PTB10 — General-purpose I/O / SPI0_PCS0 |
| Pin 39 | PTB11 — General-purpose I/O / SPI0_SCK |
| Pin 40 | VDD — Digital supply voltage |
| Pin 41 | VSS — Digital ground |
| Pin 42 | PTC0 — General-purpose I/O / FTM0_CH0 (alt) |
| Pin 43 | PTC1 — General-purpose I/O / FTM0_CH1 (alt) |
| Pin 44 | PTC2 — General-purpose I/O / FTM0_CH2 (alt) |
| Pin 45 | PTC3 — General-purpose I/O / FTM0_CH3 (alt) |
| Pin 46 | PTC4 — General-purpose I/O / FTM0_CH4 (alt) |
| Pin 47 | PTC5 — General-purpose I/O / FTM0_CH5 |
| Pin 48 | PTC6 — General-purpose I/O / FTM0_CH6 |
| Pin 49 | PTC7 — General-purpose I/O / FTM0_CH7 |
| Pin 50 | PTC8 — General-purpose I/O / FTM1_CH2 (alt) |
| Pin 51 | PTC9 — General-purpose I/O / FTM1_CH3 (alt) |
| Pin 52 | PTC10 — General-purpose I/O / I2C1_SDA |
| Pin 53 | PTC11 — General-purpose I/O / I2C1_SCL |
| Pin 54 | PTC12 — General-purpose I/O / FTM2_CH4 |
| Pin 55 | PTC13 — General-purpose I/O / FTM2_CH5 |
| Pin 56 | PTC14 — General-purpose I/O / FTM2_CH6 |
| Pin 57 | PTC15 — General-purpose I/O / FTM2_CH7 |
| Pin 58 | VSS — Digital ground |
| Pin 59 | VDD — Digital supply voltage |
| Pin 60 | PTD0 — General-purpose I/O / FTM3_CH0 |
| Pin 61 | PTD1 — General-purpose I/O / FTM3_CH1 |
| Pin 62 | PTD2 — General-purpose I/O / FTM3_CH2 |
| Pin 63 | PTD3 — General-purpose I/O / FTM3_CH3 |
| Pin 64 | PTD4 — General-purpose I/O / FTM3_CH4 |
| Pin 65 | PTD5 — General-purpose I/O / FTM3_CH5 |
| Pin 66 | PTD6 — General-purpose I/O / FTM3_CH6 |
| Pin 67 | PTD7 — General-purpose I/O / FTM3_CH7 |
| Pin 68 | PTD8 — General-purpose I/O / I2C0_SCL (alt) |
| Pin 69 | PTD9 — General-purpose I/O / I2C0_SDA (alt) |
| Pin 70 | PTD10 — General-purpose I/O / UART2_TX |
| Pin 71 | PTD11 — General-purpose I/O / UART2_RX |
| Pin 72 | PTD12 — General-purpose I/O / FTM0_CH4 (alt) |
| Pin 73 | PTD13 — General-purpose I/O / FTM0_CH5 (alt) |
| Pin 74 | PTD14 — General-purpose I/O / FTM0_CH6 (alt) |
| Pin 75 | PTD15 — General-purpose I/O / FTM0_CH7 (alt) |
| Pin 76 | VSS — Digital ground |
| Pin 77 | VDD — Digital supply voltage |
| Pin 78 | PTE16 — General-purpose I/O / SPI0_PCS1 |
| Pin 79 | PTE17 — General-purpose I/O / SPI0_PCS2 |
| Pin 80 | PTE18 — General-purpose I/O / SPI0_PCS3 |
| Pin 81 | PTE19 — General-purpose I/O / SPI0_PCS4 |
| Pin 82 | PTE20 — General-purpose I/O / UART3_TX |
| Pin 83 | PTE21 — General-purpose I/O / UART3_RX |
| Pin 84 | PTE22 — General-purpose I/O / I2C1_SDA (alt) |
| Pin 85 | PTE23 — General-purpose I/O / I2C1_SCL (alt) |
| Pin 86 | PTE24 — General-purpose I/O / CAN0_TX |
| Pin 87 | PTE25 — General-purpose I/O / CAN0_RX |
| Pin 88 | PTE26 — General-purpose I/O / UART4_TX |
| Pin 89 | PTE27 — General-purpose I/O / UART4_RX |
| Pin 90 | PTE28 — General-purpose I/O |
| Pin 91 | PTE29 — General-purpose I/O |
| Pin 92 | PTE30 — General-purpose I/O |
| Pin 93 | PTE31 — General-purpose I/O |
| Pin 94 | VSS — Digital ground |
| Pin 95 | VDD — Digital supply voltage |
| Pin 96 | RESET_b — Reset input, active low |
| Pin 97 | TDI — JTAG Test Data In |
| Pin 98 | TDO — JTAG Test Data Out |
| Pin 99 | TMS — JTAG Test Mode Select |
| Pin 100 | TCK — JTAG Test Clock |
Typical Applications
MK22FX512VLL12 is suitable for 6 applications: USB Human Interface Device (HID), Industrial Sensor Node with USB Diagnostics, Point-of-Sale (POS) Terminal, Home and Building Automation Controller, BLDC Motor Control, Portable Medical Device.
USB Human Interface Device (HID)
The MK22FX512VLL12 fits USB HID designs because it integrates a USB 2.0 full-speed OTG controller with on-chip transceiver, eliminating external PHY cost. Its 512KB flash and 120MHz Cortex-M4F core provide ample headroom for USB stack plus HID class firmware, while 128KB SRAM supports multi-endpoint buffering without external memory. Compared with discrete USB MCU solutions, the part reduces BOM by approximately USD 0.40-0.60 per board and simplifies PCB routing. The 100-LQFP exposes USB D+/D- lines for direct 90-ohm differential routing, and the low-power run modes enable USB-suspended devices below 2.5mA.
Recommended
Industrial Sensor Node with USB Diagnostics
Industrial sensor nodes benefit from the MK22FX512VLL12's dual 16-bit ADCs, 12-bit DAC, and USB diagnostics port for configuration and log retrieval. The 512KB flash stores sensor calibration tables and protocol stacks (Modbus, CANopen, or proprietary), while 128KB SRAM supports circular data buffers for high-rate sampling. The Cortex-M4F DSP extensions accelerate FFT and digital filtering for vibration or strain-signal conditioning. Operating from 1.71V to 3.6V across -40C to +105C, it survives industrial enclosures without derating. Compared to external-ADC + low-end MCU designs, integration reduces PCB area by approximately 30%.
Recommended
Point-of-Sale (POS) Terminal
POS terminals leverage the MK22FX512VLL12's USB host mode for keyboard/PIN-pad connectivity, large flash for payment-stack firmware, and rich timers for display/keypad scanning. The 512KB flash accommodates multiple contactless-payment libraries (NFC, EMV), while 128KB SRAM supports transaction buffering. The Cortex-M4F FPU accelerates cryptographic primitives (AES, RSA) for tokenization when paired with a secure element. Compared with discrete secure-MCU + main-MCU designs, the single-chip solution cuts BOM cost by approximately USD 1.50 per terminal and simplifies PCI certification paths.
Recommended
Home and Building Automation Controller
Building-automation controllers use the MK22FX512VLL12's USB for service/diagnostic ports, multiple UARTs for sensor busses (Modbus, KNX, or proprietary RF), and timers for relay/PWM control. The 512KB flash holds ZigBee/Thread/Z-Wave bridge firmware, and 128KB FlexMemory provides EEPROM emulation for storing configuration data without external EEPROM. Low-power stop modes with RTC wake-up reduce standby consumption below 5uA for battery-backed wireless sensors. Compared to dual-MCU designs, the single part reduces BOM and PCB footprint, and the 100-LQFP exposes every peripheral needed for a multi-protocol gateway.
Recommended
BLDC Motor Control
BLDC motor control benefits from the MK22FX512VLL12's multiple FTM timers with PWM outputs, dual 16-bit ADCs for back-EMF and current sensing, and QEI support for encoder feedback. The Cortex-M4F DSP instructions accelerate field-oriented control (FOC) math at 120MHz, while 512KB flash holds tuning tables and field-weakening routines. Compared with DSP-only motor controllers, the integrated MCU approach reduces component count by approximately 4-6 ICs per axis. The 100-LQFP exposes enough PWMs for multi-axis control in robotic or appliance designs.
Recommended
Portable Medical Device
Portable medical devices use the MK22FX512VLL12's low-power modes, USB for charging and data sync, and rich analog for ECG/SpO2 front ends. The 512KB flash stores FDA firmware with version history, and 128KB SRAM supports real-time waveform buffers. The -40C to +105C operating range survives body-worn enclosure thermal stress. Compared to discrete AFE + low-end MCU designs, integration simplifies IEC 60601 EMI compliance and reduces BOM. The 100-LQFP package supports the analog-heavy pin count typical of medical front-end designs, and FlexMemory emulates EEPROM for patient log retention.
Recommended
Recommended Products Summary
Engineering reference data for MK22FX512VLL12 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MK22FN512VLL12 | MK22FX512AVMC12 | MKL26Z256VLL4 | MK20DX256VLH7 | MIMXRT1064CVL5A |
|---|---|---|---|---|---|---|
| Package | 100-LQFP (14x14) | 100-LQFP (14x14) | 100-LQFP (14x14) | 100-LQFP (14x14) | 100-LQFP (14x14) | 100-LQFP-class |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core | ARM Cortex-M4F | ARM Cortex-M4F | ARM Cortex-M4F | ARM Cortex-M0+ | ARM Cortex-M4 | ARM Cortex-M7 |
| Core Frequency | 120 MHz | 120 MHz | 120 MHz | 48 MHz | 100 MHz | 600 MHz |
| USB | USB 2.0 FS OTG (PHY integrated) | USB 2.0 FS OTG (PHY integrated) | USB 2.0 FS OTG (PHY integrated) | USB 2.0 FS OTG (PHY integrated) | USB 2.0 FS device (no OTG, no PHY) | USB 2.0 HS with PHY |
| Lifecycle Status | NRND | Active | NRND | Active | NRND | Active |
Key Differentiators
- Largest flash density in the K22F family (vs MK22FN512VLL12)
- USB OTG with integrated PHY (vs MK20DX256VLH7)
- Cortex-M4F with FPU and DSP (vs MKL26Z256VLL4)
Design Notes
Decouple each VDD/VSS pair with a 100nF ceramic capacitor placed within 5mm of the pin pair, plus a bulk 4.7uF near the package. According to NXP's K22F reference manual, the on-chip USB regulator requires a 1uF bypass on VOUT33; operation below 1.71V will silently abort flash programming. For battery-backed designs, the VBAT pin must be tied to a valid supply even if RTC is unused, otherwise the device enters undefined reset states.
Route the USB0_DP and USB0_DM lines as a 90-ohm differential pair with matched length within 150 mil, and place the 27-ohm series resistors within 4mm of the MCU. Add a 4.7uF + 100nF capacitor pair at VREGIN. Keep crystal traces short and symmetric; the 32kHz RTC crystal load capacitance must match the crystal's specified CL to within 1pF to avoid timing drift per NXP's hardware design guide.
Do not assume IRC48M is available across K22F variants - the MK22FX512AVLL12 historically shipped without IRC48M, breaking USB boot firmware. Engineers migrating from FX to FN silicon must re-validate USB clocking and FlexNVM partitioning defaults. Always set the FSEC register to a non-secure value before mass production, or the JTAG will be permanently locked and field updates impossible.
Compliance Information
RoHS and REACH compliant per NXP product page. Standard (non-automotive) grade; not AEC-Q100 qualified - choose MK22FN512VLL12-Q1 for automotive.