STM32L422KBU6

STMicroelectronics

STMicroelectronics STM32L4 series STM32L422KBU6, ARM Cortex-M4 32-bit MCU, 80 MHz, 128 KB Flash, 40K x 8 RAM, 26 I/O, I²C/SPI/UART/USB/Quad SPI, 1.71V-3.6V, -40°C-85°C, 32-UFQFPN (5x5 mm), Tray.

STMicroelectronics STM32L422KBU6
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Technical specifications

STM32L422KBU6 specifications
Parameter / AttributeSpecification / Value
SeriesSTM32L4
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.71V ~ 3.6V
Operating temperature-40°C~85°C(TA)
Speed80MHz
PackageTray
RAM size40K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, DMA, PWM, WDT
ConnectivityI²C, Infrared, IrDA, LINbus, Quad SPI, SPI, UART/USART, USB
Number of i (O)26
Core processorARM® Cortex®-M4
Case32-UFQFN Exposed Pad
Data convertersA/D 10x12b
Program memory size128KB (128K x 8)

Technical details

The 32-UFQFPN package (5x5 mm) with exposed pad fits tight PCB layouts in portable or industrial sensor nodes.

The 26 available GPIOs, combined with DMA, a PWM timer, brown-out detection, and a watchdog, cover most sensor-fusion or motor-control feedback tasks without an external companion chip.

It is not qualified for automotive under-hood (125°C) or extended military environments, but the wide supply tolerance and low-power sleep modes make it a strong fit for field-deployed edge nodes that see seasonal temperature swings.

For new designs, this means no supply-chain risk from a looming EOL.

STM32L422KBU6
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