STMicroelectronics STM32L071CBU6TR

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Product attributes Property Value
Manufacturer STMicroelectronics
Product Series STM32L0
Packaging Tape & Reel (TR) | NULL
Core Processor ARM® Cortex®-M0+
Core Size 32-Bit
Speed 32MHz
Connectivity I2C, IrDA, SMBus, SPI, UART/USART
Peripherals Brown-out Detect/Reset, DMA, I2S, POR, PWM, Temp Sensor, Voltage Detect, WDT
Number of I/O 37
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 SAR
Oscillator Type External, Internal
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification AEC -
Mounting Type Surface Mount
Supplier Device Package 48-UFQFPN (7x7)
Package / Case 48-UFQFN Exposed Pad
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The STMicroelectronics STM32L071CBU6 is a 32MHz ARM Cortex-M0+ MCU with 128KB flash and 20KB RAM. It operates from 1.65V to 3.6V in a 48-UFQFN package. Features include brown-out detection, DMA, I2S, PWM, temp sensor, and WDT for ultra-low-power applications.

  • Ultra-low-power Cortex-M0+: Extends battery life in energy-harvesting and portable designs.
  • 1.65V minimum supply: Operates from a single alkaline cell or Li-ion at low charge.
  • Integrated temp sensor: Saves external thermistor cost and PCB space.
  • 128KB flash / 20KB RAM: Balanced memory for complex IoT applications.

Battery-Powered IoT Sensors

The 1.65V minimum supply and low-power modes extend coin-cell life in wireless temperature/humidity monitors.

Smart Agriculture Probes

Internal temp sensor and 128KB flash support soil moisture calibration curves with long deployment intervals.

Portable Medical Thermometers

High accuracy ADC and temp sensor enable clinical-grade temperature measurement with minimal external components.

Industrial 4-20mA Loop Transmitters

1.65V-3.6V operation and 20KB RAM handle HART protocol stacks in pressure transmitters.

Wearable Fitness Trackers

Compact 48-UFQFN and low power allow continuous step counting and heart rate monitoring for weeks.

Smart Lock Controllers

DMA and I2S support secure element communication and voice prompts in battery-operated door locks.

Q: What core does this MCU use?
A: It uses an ARM Cortex-M0+ core at 32MHz.
Q: What is the flash memory size?
A: It has 128KB of flash memory.
Q: What is the operating temperature range?
A: It operates from -40°C to 85°C.
Q: What package is available?
A: It comes in a 48-UFQFN package with exposed pad.
Q: Does it have a temperature sensor?
A: Yes, it includes an internal temp sensor, plus Brown-out Detect, DMA, I2S, POR, PWM, and WDT.
Base Product Number : STM32L071CBU6
128KB flash 20KB RAM 32-bit MCU 32MHz ARM Cortex-M0+ DMA I2S IoT low power PWM STMicroelectronics temp sensor UFQFN-48 WDT wearable
Q: What core does this MCU use?
A: It uses an ARM Cortex-M0+ core at 32MHz.
Q: What is the flash memory size?
A: It has 128KB of flash memory.
Q: What is the operating temperature range?
A: It operates from -40°C to 85°C.
Q: What package is available?
A: It comes in a 48-UFQFN package with exposed pad.
Q: Does it have a temperature sensor?
A: Yes, it includes an internal temp sensor, plus Brown-out Detect, DMA, I2S, POR, PWM, and WDT.