MK22DX128VLK5557 - 50MHz Cortex-M4 MCU, 128KB Flash | NXP
MPN: MK22DX128VLK5557 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.65 | $2.65 |
| 10 | $2.38 | $23.80 |
| 100 | $2.11 | $211.00 |
| 500 | $1.89 | $945.00 |
| 1,000 | $1.71 | $1,710.00 |
MK22DX128VLK5557 Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (flash), working memory (RAM), and a rich set of peripherals (ADC, timers, communication interfaces) on one silicon device. The ARM Cortex-M4 is a 32-bit RISC core optimized for embedded applications, featuring single-cycle multiply-accumulate, hardware single-precision floating-point (in some variants), and a deterministic Nested Vectored Interrupt Controller (NVIC). Kinetis MCUs belong to the broader category of mixed-signal microcontrollers that combine analog and digital peripherals on a single die.
Key features include a 1.71V to 3.6V operating supply range, hardware AES encryption accelerator, low-power run, wait, and stop modes, 12-bit ADC, multiple timers (FTM, PIT, LPTMR), USB 2.0 full-speed device/host/OTG, CAN, I2C, SPI, and UART peripherals. The Cortex-M4 core delivers 1.25 DMIPS/MHz (Dhrystone 2.1) performance.
The MK22DX128VLK5557 integrates high-speed GPIO, a flexible clock tree with FLL and PLL, and a 16-channel DMA controller for offloading data movement. The internal 128KB flash supports in-system programming and security features including a unique device ID and flash access control. The 80-LQFP package exposes 56 GPIO lines for external connectivity in mixed-signal designs.
Typical applications include USB peripherals, industrial control, low-power sensor nodes, consumer electronics with display drivers, point-of-sale terminals, and motor control. The wide operating voltage range and low-power Run/Stop modes also suit battery-powered IoT devices.
When designing with this part, place 100nF decoupling capacitors close to each VDD pin pair, route the 32.768 kHz external crystal traces with short symmetric loops, and observe USB DP/DN 90-ohm differential routing rules if the USB peripheral is enabled.
This page synthesizes Rochester Electronics distributor pricing, NXP Kinetis K20 family same-package alternatives, and practical design notes not found in a single datasheet view.
Drop-in alternatives for MK22DX128VLK5557 — 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 MK22DX128VLK5557 (same form factor and footprint) — differing in Package, Series, Flash Memory, Peripherals, Maximum Clock Frequency.
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View Datasheet →MK22DX128VLK5557 Maximum Ratings & Electrical Characteristics
| Core Architecture | ARM Cortex-M4 |
| Core Count | Single-core 32-bit |
| Maximum CPU Frequency | 50 MHz |
| Program Memory (Flash) | 128 KB (128K x 8) |
| Operating Supply Voltage | 1.71 V to 3.6 V |
| Package | 80-LQFP (12x12 mm) |
| GPIO Count | 56 I/O lines |
| Mounting Type | Surface Mount |
| ADC | 12-bit / 16-bit channels (per family) |
| USB | USB 2.0 Full-Speed Device/Host/OTG |
| Communication Interfaces | CAN, I2C, SPI, UART |
| DMA | 16 channels |
| AES Hardware | Hardware AES encryption accelerator |
| Series | Kinetis K20 |
| RoHS Status | Compliant |
MK22DX128VLK5557 Pin Configuration
| Pin 1 | PTE0 — Port E GPIO / peripheral pin (pin-mux configurable) |
| Pin 2 | PTE1 — Port E GPIO / peripheral pin |
| Pin 3 | PTE2 — Port E GPIO / peripheral pin |
| Pin 4 | PTE3 — Port E GPIO / peripheral pin |
| Pin 5 | PTE4 — Port E GPIO / peripheral pin |
| Pin 6 | PTE5 — Port E GPIO / peripheral pin |
| Pin 7 | PTE6 — Port E GPIO / peripheral pin |
| Pin 8 | VDD — Core supply voltage (1.71V to 3.6V) |
| Pin 9 | VSS — Ground |
| Pin 10 | PTE16 — Port E GPIO |
| Pin 11 | PTE17 — Port E GPIO |
| Pin 12 | PTE18 — Port E GPIO |
| Pin 13 | PTE19 — Port E GPIO |
| Pin 14 | PTA0 — Port A GPIO / TSI channel |
| Pin 15 | PTA1 — Port A GPIO |
| Pin 16 | PTA2 — Port A GPIO |
| Pin 17 | PTA3 — Port A GPIO |
| Pin 18 | PTA4 — Port A GPIO |
| Pin 19 | PTA5 — Port A GPIO |
| Pin 20 | PTA6 — Port A GPIO |
| Pin 21 | PTA7 — Port A GPIO |
| Pin 22 | PTA8 — Port A GPIO |
| Pin 23 | PTA9 — Port A GPIO |
| Pin 24 | PTA10 — Port A GPIO |
| Pin 25 | PTA11 — Port A GPIO |
| Pin 26 | VDD — Core supply voltage |
| Pin 27 | VSS — Ground |
| Pin 28 | PTA12 — Port A GPIO |
| Pin 29 | PTA13 — Port A GPIO |
| Pin 30 | PTA14 — Port A GPIO |
| Pin 31 | PTA15 — Port A GPIO |
| Pin 32 | PTA16 — Port A GPIO |
| Pin 33 | PTA17 — Port A GPIO |
| Pin 34 | PTA18 — Port A GPIO |
| Pin 35 | PTA19 — Port A GPIO |
| Pin 36 | PTB0 — Port B GPIO / ADC0 channel |
| Pin 37 | PTB1 — Port B GPIO / ADC0 channel |
| Pin 38 | PTB2 — Port B GPIO / ADC0 channel |
| Pin 39 | PTB3 — Port B GPIO / ADC0 channel |
| Pin 40 | PTB4 — Port B GPIO / ADC0 channel |
| Pin 41 | PTB5 — Port B GPIO / ADC0 channel |
| Pin 42 | PTB6 — Port B GPIO / ADC0 channel |
| Pin 43 | PTB7 — Port B GPIO / ADC0 channel |
| Pin 44 | PTB8 — Port B GPIO |
| Pin 45 | PTB9 — Port B GPIO |
| Pin 46 | PTB10 — Port B GPIO |
| Pin 47 | PTB11 — Port B GPIO |
| Pin 48 | VDD — Core supply voltage |
| Pin 49 | VSS — Ground |
| Pin 50 | PTC0 — Port C GPIO |
| Pin 51 | PTC1 — Port C GPIO |
| Pin 52 | PTC2 — Port C GPIO |
| Pin 53 | PTC3 — Port C GPIO |
| Pin 54 | PTC4 — Port C GPIO / LLWU pin |
| Pin 55 | PTC5 — Port C GPIO / LLWU pin |
| Pin 56 | PTC6 — Port C GPIO / LLWU pin |
| Pin 57 | PTC7 — Port C GPIO / LLWU pin |
| Pin 58 | PTC8 — Port C GPIO |
| Pin 59 | PTC9 — Port C GPIO |
| Pin 60 | PTC10 — Port C GPIO |
| Pin 61 | PTC11 — Port C GPIO |
| Pin 62 | PTC12 — Port C GPIO |
| Pin 63 | PTC13 — Port C GPIO |
| Pin 64 | PTC14 — Port C GPIO |
| Pin 65 | PTC15 — Port C GPIO |
| Pin 66 | PTC16 — Port C GPIO |
| Pin 67 | PTC17 — Port C GPIO |
| Pin 68 | PTD0 — Port D GPIO |
| Pin 69 | PTD1 — Port D GPIO |
| Pin 70 | PTD2 — Port D GPIO |
| Pin 71 | PTD3 — Port D GPIO |
| Pin 72 | PTD4 — Port D GPIO |
| Pin 73 | PTD5 — Port D GPIO |
| Pin 74 | PTD6 — Port D GPIO |
| Pin 75 | PTD7 — Port D GPIO |
| Pin 76 | PTD8 — Port D GPIO |
| Pin 77 | PTD9 — Port D GPIO |
| Pin 78 | PTD10 — Port D GPIO |
| Pin 79 | PTD11 — Port D GPIO |
| Pin 80 | RESET_b — Reset input (active low) / SWDIO multiplexed |
Typical Applications
MK22DX128VLK5557 is suitable for 7 applications: USB HID / CDC Peripherals, Industrial Control / Sensor Hub, Battery-Powered IoT Sensor Nodes, Point-of-Sale Terminals, Consumer Electronics with Display, Low-Voltage Motor Control (BLDC / Stepper), Automotive Body / Convenience ECUs.
USB HID / CDC Peripherals
The MK22DX128VLK5557's integrated USB 2.0 Full-Speed Device/Host/OTG controller with on-chip transceiver makes it well suited to USB HID, CDC, and mass-storage peripherals. The 128KB flash holds typical USB device firmware including a USB stack (e.g. NXP USB stack or TinyUSB), while 50MHz Cortex-M4 delivers responsive HID polling rates. Unlike external ULPI USB PHYs, the on-chip transceiver eliminates the need for a 24MHz crystal reference for the USB block, reducing BOM cost in compact USB peripherals.
Recommended
Industrial Control / Sensor Hub
The MK22DX128VLK5557's 12-bit ADC, 56 GPIO, CAN, SPI, and UART peripherals support industrial sensor hubs and PLC input modules. The 1.71V to 3.6V supply range accommodates 3.3V industrial backplanes, while hardware AES encryption provides secure field-bus data exchange. Unlike higher-pin-count K70 Kinetis parts, the 80-LQFP keeps PCB real-estate low while still exposing enough GPIO for typical sensor aggregation.
Recommended
Battery-Powered IoT Sensor Nodes
The MK22DX128VLK5557's low-power Run, Wait, Stop, and VLLS modes make it ideal for battery-powered wireless sensor nodes that spend most of their life in sleep. Typical stop-mode current in the single-digit microamp range extends coin-cell battery life to years for periodic wake-and-wake sensor reading. Unlike higher-MHz K50 parts, the 50MHz limit reduces active-mode current while still handling BLE radio SPI command sequences in burst mode.
Recommended
Point-of-Sale Terminals
POS terminals benefit from the MK22DX128VLK5557's USB device support, AES encryption, and 56 GPIO that drive keypad scanning, LCD interface, and secure card reader communication. The 128KB flash stores payment protocol stacks and tamper-response firmware. Unlike 8-bit MCUs used in entry-level POS designs, the Cortex-M4 enables cryptographic operations and SSL/TLS acceleration in firmware.
Recommended
Consumer Electronics with Display
The MK22DX128VLK5557's SPI, UART, and I2C peripherals plus DMA controller support small TFT or OLED display controllers in consumer electronics. The 56 GPIO provides enough pins to drive a parallel TFT data bus plus touch and backlight control. Unlike parts without DMA, the K22's 16-channel DMA offloads pixel-block transfers so the Cortex-M4 core can handle UI logic without stall.
Recommended
Low-Voltage Motor Control (BLDC / Stepper)
The MK22DX128VLK5557's FlexTimer (FTM) modules, fast ADC, and DMA controller drive sensorless BLDC or stepper motor control loops at 1.71V to 3.6V operation. The 50MHz CPU clock is sufficient for 20kHz PWM commutation with field-oriented control (FOC) firmware. The 80-LQFP package exposes enough pins for three-phase gate-driver PWM, current-sense ADC channels, and Hall/encoder inputs.
Recommended
Automotive Body / Convenience ECUs
The MK22DX128VLK5557 supports CAN 2.0B, LIN, and USB peripherals commonly found in automotive body ECUs such as door modules, HVAC controllers, or steering-column switches. The 128KB flash is sufficient for CAN/LIN stacks plus body-control firmware. Unlike AEC-Q100 mandated -Q suffixes, the standard K22 part suits non-safety automotive convenience applications; safety-critical ECUs require the K22 KVA part variants.
Recommended
Recommended Products Summary
Engineering reference data for MK22DX128VLK5557 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MK21DN512AVLK5 | MK21DX256AVLK5 | MK21DN512VMC5 | MK30DX256VLK7 | MK40DX128VLH7 |
|---|---|---|---|---|---|---|
| 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 | ARM Cortex-M4 50MHz | ARM Cortex-M4 50MHz | ARM Cortex-M4 50MHz | ARM Cortex-M4 50MHz | ARM Cortex-M4 50MHz | ARM Cortex-M4 50MHz |
| Flash Memory | 128 KB | 512 KB (+300%) | 256 KB (+100%) | 512 KB (+300%) | 256 KB (+100%) | 128 KB (0%) |
| Operating Voltage | 1.71V to 3.6V | 1.71V to 3.6V | 1.71V to 3.6V | 1.71V to 3.6V | 1.71V to 3.6V | 1.71V to 3.6V |
| USB Controller | USB 2.0 Full-Speed OTG | USB 2.0 High-Speed (ULPI) | USB 2.0 Full-Speed OTG | USB 2.0 Full-Speed OTG | USB 2.0 Full-Speed OTG | USB 2.0 Full-Speed OTG |
| AES Hardware | Yes | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Best price/performance in the K22 Kinetis portfolio at 80-LQFP (vs MK21DN512AVLK5)
- On-chip USB Full-Speed OTG with integrated transceiver (vs MK40DX128VLH7)
- 50MHz Cortex-M4 with hardware AES for security (vs MKL26Z128VMC4)
Design Notes
Estimated: at 50MHz Cortex-M4 active mode, typical current draw is around 10-15mA from a 3.3V supply. Place one 100nF ceramic decoupling capacitor at every VDD pin pair (pins 8, 26, 48) and an additional 4.7uF bulk capacitor near the package. For battery-powered designs, configure the MCG (Multipurpose Clock Generator) into FEI mode with the 32.768kHz RTC oscillator as the system clock to drop active current into the low single-digit mA range.
Route the 32.768kHz external crystal traces (XTAL32K_IN / XTAL32K_OUT) with short symmetric loops, keep them away from switching power and USB DP/DN traces, and guard the crystal with a ground pour. The USB DP/DN pair must be routed as a 90-ohm differential with no splits, and the USB cable-side common-mode choke should be placed within 4mm of the connector. ESD protection (e.g. USBLC6-2SC6) is recommended on USB DP/DN for industrial environments.
Do not skip the SIM peripheral configuration when migrating from K10 to K22: the K22 has a different clock-tree reset default and the I/O drive strength register must be configured before high-speed GPIO toggling. The RESET_b pin is multiplexed with SWDIO, so adding an external pull-up or supervisor may interfere with SWD debugging; use only weak pull-ups (<=10k) on RESET_b. The MK22DX128VLK5557 lacks AEC-Q100 qualification - use the K22 KVA/Q variants for automotive safety-critical applications.
Estimated: the 80-LQFP (12x12mm) package has a typical theta_JA around 65 C/W on a 4-layer JEDEC test board. At maximum active current (~30mA worst-case including peripherals) and 3.6V supply, internal dissipation is roughly 108mW, producing a junction temperature rise of about 7C above ambient. No heatsink is required for typical commercial use, but derating may apply if all peripherals are simultaneously clocked at maximum frequency in an enclosed industrial chassis.
Compliance Information
RoHS and REACH compliant per LCSC and JLCPCB listings. Not AEC-Q100 qualified - choose Kinetis K22 KVA/Q variants for automotive safety applications.