STMicroelectronics STM32L071KBU6

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Product attributes Property Value
Manufacturer STMicroelectronics
Product Series STM32L0
Packaging Tray |
Core Processor ARM® Cortex®-M0+
Core Size 32-Bit Single-Core
Speed 32MHz
Connectivity I2C, IrDA, SPI, UART/USART
Peripherals Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT
Number of I/O 23
Program Memory Size 128KB (128K x 8)
Program Memory Type FLASH
EEPROM Size 6K x 8
RAM Size 20K x 8
Voltage - Supply (Vcc/Vdd) 1.65V ~ 3.6V
Data Converters A/D 10x12b
Oscillator Type Internal
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification AEC -
Mounting Type Surface Mount
Supplier Device Package 32-UFQFPN (5x5)
Package / Case 32-UFQFN Exposed Pad
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The STM32L071KBU6 is an ultra-low-power MCU from STMicroelectronics with an ARM Cortex-M0+ core running at 32MHz. It features 128KB flash and 20KB SRAM in a 32-UFQFN package. With a supply range of 1.65V to 3.6V, it integrates DMA, I2S, PWM, and brown-out detection for energy-efficient designs.

  • 1.65V operation: enables direct battery connection and energy harvesting.
  • 32MHz Cortex-M0+: efficient processing for basic control tasks.
  • 128KB flash: ample storage for firmware and data logging.
  • Rich peripherals: I2S and PWM support audio and motor control.

Energy Harvesting

Operate from 1.65V, ideal for solar or thermal harvesting in wireless sensor nodes.

Smart Agriculture

Use I2S and DMA for soil sensor data logging with low power consumption.

Access Control

128KB flash supports secure key storage for RFID and biometric locks.

Portable Medical

Low voltage and WDT ensure reliable operation in glucose monitors and pulse oximeters.

Industrial Monitoring

20KB RAM handles protocol buffers for Modbus or CAN in factory automation.

Consumer IoT

Compact 32-UFQFN package fits smart plugs and environmental sensors.

Q: What core does it use?
A: ARM Cortex-M0+ at 32MHz.
Q: What is the voltage range?
A: 1.65V to 3.6V.
Q: Memory size?
A: 128KB flash and 20KB SRAM.
Q: Package type?
A: 32-UFQFN with exposed pad.
Base Product Number : STM32L071KBU6
128KB Flash 20KB RAM 32-bit MCU 32MHz ARM Cortex-M0+ Energy Harvesting I2S IoT PWM STM32L071KBU6 UFQFN-32 Ultra-Low-Power
Q: What core does it use?
A: ARM Cortex-M0+ at 32MHz.
Q: What is the voltage range?
A: 1.65V to 3.6V.
Q: Memory size?
A: 128KB flash and 20KB SRAM.
Q: Package type?
A: 32-UFQFN with exposed pad.