MK22FX512AVLK12 - Kinetis K22 120MHz Cortex-M4F MCU | NXP
MPN: MK22FX512AVLK12 ✓ Hoạt độngMK22FX512AVLK12 Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho MK22FX512AVLK12 — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với MK22FX512AVLK12 (cùng hình factor và footprint) — khác nhau ở Package, ADC, USB, Maximum CPU Frequency, SRAM.
MK22FX512VLK12
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MK22FN512VLK12
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MK10DX256VLK7
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MK21DN512AVLK5
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MK30DX256VLK7
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MK22FX512AVLK12 Tỷ lệ tối đa & tính chất điện
| 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 |
| Nhiệt độ hoạt động | -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 |
| Hộp | 80-pin LQFP (12x12 mm, 0.5 mm pitch) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
Cấu hình chân MK22FX512AVLK12
| Chân 1 | PTE0 — Port E bit 0, alternate function: UART1_TX / SPI1_PCS1 / RTC_CLKOUT |
| Chân 2 | PTE1 — Port E bit 1, alternate function: UART1_RX / SPI1_SOUT / SPI1_SIN |
| Chân 3 | PTE2 — Port E bit 2, alternate function: UART1_CTS_b / SPI1_SCK / SPI1_SIN |
| Chân 4 | PTE3 — Port E bit 3, alternate function: UART1_RTS_b / SPI1_SIN / SPI1_SOUT |
| Chân 5 | PTE4 — Port E bit 4, alternate function: SPI1_PCS0 |
| Chân 6 | PTE5 — Port E bit 5, alternate function: SPI1_PCS2 / UART3_TX |
| Chân 7 | PTE6 — Port E bit 6, alternate function: SPI1_PCS3 / UART3_RX |
| Chân 8 | VDD — Digital supply voltage (1.71 V to 3.6 V) |
| Chân 9 | VSS — Digital ground |
| Chân 10 | PTA0 — Port A bit 0, JTAG_TCLK / SWD_CLK |
| Chân 11 | PTA1 — Port A bit 1, JTAG_TDI |
| Chân 12 | PTA2 — Port A bit 2, JTAG_TDO |
| Chân 13 | PTA3 — Port A bit 3, JTAG_TMS / SWD_DIO |
| Chân 14 | PTA4 — Port A bit 4, NMI_b |
| Chân 15 | PTA5 — Port A bit 5, JTAG_TRST_b |
| Chân 16 | PTA18 — Port A bit 18, EXTAL0 (crystal oscillator input) |
| Chân 17 | PTA19 — Port A bit 19, XTAL0 (crystal oscillator output) |
| Chân 18 | VDDA — Analog supply voltage |
| Chân 19 | VREFH — ADC voltage reference high |
| Chân 20 | VREFL — ADC voltage reference low |
| Chân 21 | VSSA — Analog ground |
| Chân 22 | PTA20 — Port A bit 20, RESET_b |
| Chân 23 | PTB0 — Port B bit 0, ADC0_SE4 / EXTRG_IN |
| Chân 24 | PTB1 — Port B bit 1, ADC0_SE5 / EXTRG_OUT |
| Chân 25 | PTB2 — Port B bit 2, ADC0_SE6 |
| Chân 26 | PTB3 — Port B bit 3, ADC0_SE7 |
| Chân 27 | PTB4 — Port B bit 4, GPIO |
| Chân 28 | PTB5 — Port B bit 5, GPIO |
| Chân 29 | PTB6 — Port B bit 6, GPIO |
| Chân 30 | PTB7 — Port B bit 7, GPIO |
| Chân 31 | PTB8 — Port B bit 8, GPIO |
| Chân 32 | PTB9 — Port B bit 9, GPIO |
| Chân 33 | PTB10 — Port B bit 10, GPIO |
| Chân 34 | PTB11 — Port B bit 11, GPIO |
| Chân 35 | VSS — Digital ground |
| Chân 36 | VDD — Digital supply voltage |
| Chân 37 | PTC0 — Port C bit 0, GPIO / EXTRG_IN |
| Chân 38 | PTC1 — Port C bit 1, GPIO / EXTRG_OUT |
| Chân 39 | PTC2 — Port C bit 2, GPIO / CMP1_OUT |
| Chân 40 | PTC3 — Port C bit 3, GPIO / CMP0_OUT |
| Chân 41 | PTC4 — Port C bit 4, GPIO / LLWU_P8 |
| Chân 42 | PTC5 — Port C bit 5, GPIO / LLWU_P9 |
| Chân 43 | PTC6 — Port C bit 6, GPIO / CMP2_IN3 |
| Chân 44 | PTC7 — Port C bit 7, GPIO / CMP3_IN3 |
| Chân 45 | PTC8 — Port C bit 8, GPIO / I2S0_MCLK |
| Chân 46 | PTC9 — Port C bit 9, GPIO / FTM2_CH6 |
| Chân 47 | PTC10 — Port C bit 10, GPIO / I2C1_SDA |
| Chân 48 | PTC11 — Port C bit 11, GPIO / I2C1_SCL |
| Chân 49 | PTC12 — Port C bit 12, GPIO / FTM3_CH0 |
| Chân 50 | PTC13 — Port C bit 13, GPIO / FTM3_CH1 |
| Chân 51 | PTC14 — Port C bit 14, GPIO / FTM3_CH2 |
| Chân 52 | PTC15 — Port C bit 15, GPIO / FTM3_CH3 |
| Chân 53 | VSS — Digital ground |
| Chân 54 | VDD — Digital supply voltage |
| Chân 55 | PTD0 — Port D bit 0, GPIO / SPI0_PCS0 |
| Chân 56 | PTD1 — Port D bit 1, GPIO / SPI0_SCK |
| Chân 57 | PTD2 — Port D bit 2, GPIO / SPI0_SOUT |
| Chân 58 | PTD3 — Port D bit 3, GPIO / SPI0_SIN |
| Chân 59 | PTD4 — Port D bit 4, GPIO / FTM0_CH4 |
| Chân 60 | PTD5 — Port D bit 5, GPIO / FTM0_CH5 / UART2_RX |
| Chân 61 | PTD6 — Port D bit 6, GPIO / FTM0_CH6 / UART2_TX |
| Chân 62 | PTD7 — Port D bit 7, GPIO / FTM0_CH7 |
| Chân 63 | PTD8 — Port D bit 8, GPIO / I2C0_SCL |
| Chân 64 | PTD9 — Port D bit 9, GPIO / I2C0_SDA |
| Chân 65 | PTD10 — Port D bit 10, GPIO |
| Chân 66 | PTD11 — Port D bit 11, GPIO / FTM3_CH5 |
| Chân 67 | PTD12 — Port D bit 12, GPIO / FTM3_CH6 |
| Chân 68 | PTD13 — Port D bit 13, GPIO / FTM3_CH7 |
| Chân 69 | PTD14 — Port D bit 14, GPIO |
| Chân 70 | PTD15 — Port D bit 15, GPIO |
| Chân 71 | USB0_DP — USB D+ (Full-Speed OTG data plus line) |
| Chân 72 | USB0_DM — USB D- (Full-Speed OTG data minus line) |
| Chân 73 | VOUT33 — USB transceiver regulator output, requires decoupling cap |
| Chân 74 | VREGIN — USB transceiver regulator input (5 V tolerant) |
| Chân 75 | PTE16 — Port E bit 16, GPIO |
| Chân 76 | PTE17 — Port E bit 17, GPIO |
| Chân 77 | PTE18 — Port E bit 18, GPIO |
| Chân 78 | PTE19 — Port E bit 19, GPIO |
| Chân 79 | PTE20 — Port E bit 20, GPIO |
| Chân 80 | VSS — Digital ground |
Ứng dụng tiêu biểu
MK22FX512AVLK12 phù hợp cho 7 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MK22FX512AVLK12 — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- Higher SRAM (128 KB) versus K21 counterpart (vsMK21DN512AVLK5)
- Newer 'A' silicon revision versus legacy FX/V (vsMK22FX512VLK12)
- Larger memory and USB versus K10DX256VLK7 (vsMK10DX256VLK7)
- Modernization path to MK22FN512VLK12 with same footprint (vsMK22FN512VLK12)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.
