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NXP USA Inc. MK20DX256VLK7 — Microcontrollers & Processors (MCU / MPU / DSP)

NXP MK20DX256VLK7 Kinetis K20 MCU, ARM Cortex-M4 72 MHz

MPNMK20DX256VLK7
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NXP Kinetis K20 series, 32-bit ARM Cortex-M4 MCU, MK20DX256VLK7, 72 MHz, 256 KB Flash, 64 KB SRAM, USB OTG + CANbus, 52 I/O, -40°C to 105°C, 80-LQFP.

$14.9700Ref. price · indicative, final on quote
NXP USA Inc. MK20DX256VLK7 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

MK20DX256VLK7 specifications
ParameterValue
SeriesKinetis K20
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.71V ~ 3.6V
Operating temperature-40°C~105°C(TA)
Speed72MHz
PackageTray
RAM size64K x 8
Core size32-Bit Single-Core
EEPROM size2K x 8
PeripheralsDMA, I²S, LVD, POR, PWM, WDT
ConnectivityCANbus, EBI/EMI, I²C, IrDA, SPI, UART/USART, USB, USB OTG
Number of i (O)52
Core processorARM® Cortex®-M4
Case80-LQFP
Data convertersA/D 29x16b; D/A 1x12b
Program memory size256KB (256K x 8)

Product details

72 MHz Cortex-M4 with 256 KB Flash — the mid-range Kinetis workhorse

The MK20DX256VLK7 is a 32-bit ARM Cortex-M4 MCU clocked at 72 MHz with 256 KB Flash and 64 KB SRAM. It integrates DSP and FPU, dual CANbus, USB OTG, and a 29-channel 16-bit ADC. Operating temperature is -40°C to 105°C.

Memory map and peripheral set — what fits in the BOM

The 256 KB Flash and 64 KB SRAM suit a FreeRTOS or bare-metal application with a moderate TCP/IP or CANopen stack. An additional 2 KB EEPROM stores calibration constants. Connectivity includes CANbus, USB OTG, SPI, I²C, UART/USART, and IrDA — covering the interfaces a typical industrial sensor hub or automotive gateway needs.

Frequently asked questions

What is the maximum clock speed of MK20DX256VLK7?

The MK20DX256VLK7 runs at a maximum core speed of 72 MHz.

What is the operating voltage range of MK20DX256VLK7?

The supply voltage range is 1.71 V to 3.6 V.

What is the difference between MK20DX256VLK7 and MK20DX128VLK7?

The MK20DX256VLK7 has 256 KB Flash and 64 KB SRAM, while the MK20DX128VLK7 has 128 KB Flash and 32 KB SRAM. Both share the same 80-LQFP footprint, core speed, and peripheral set, so a firmware recompile with adjusted memory map is the only change needed to swap between them.

What are the specifications of MK20DX256VLK7?

The MK20DX256VLK7 is a 32-bit ARM Cortex-M4 MCU at 72 MHz with 256 KB Flash, 64 KB SRAM, 2 KB EEPROM, USB OTG, CANbus, 29x16-bit ADC channels, 52 I/O, and an operating range of -40°C to 105°C in an 80-LQFP package.