STMicroelectronics STM32L031E6Y6DTR

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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 Single-Core
Speed 32MHz
Connectivity I2C, IrDA, LINbus, SPI, UART/USART
Peripherals Brown-out Detect/Reset, DMA, POR, PWM, WDT
Number of I/O 20
Program Memory Size 32KB (32K x 8)
Program Memory Type FLASH
EEPROM Size 1K x 8
RAM Size 8K x 8
Voltage - Supply (Vcc/Vdd) 1.8V ~ 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 25-WLCSP (2.1x2.49)
Package / Case 25-UFBGA, WLCSP
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The STM32L031E6Y6DTR is a 32MHz ARM Cortex-M0+ microcontroller in a 25-ball WLCSP. It offers 32KB flash and 8KB SRAM, operating from 1.8V to 3.6V. Integrated brown-out detection, DMA, and PWM make it ideal for space-constrained, battery-powered applications. ST's ultra-low-power architecture extends battery life.

  • Ultra-compact WLCSP – saves PCB area for wearables.
  • 1.8V minimum supply – works with single-cell batteries.
  • Brown-out detect/reset – prevents data corruption.
  • 32MHz Cortex-M0+ – balanced performance and efficiency.
  • DMA and PWM – reduces CPU load for real-time tasks.

Wearable Fitness Trackers

WLCSP package and 32MHz Cortex-M0+ enable tiny, low-power designs.

IoT Sensor Tags

1.8V operation and BOR ensure stable operation from coin cells.

Medical Patch Devices

Compact footprint fits disposable biosensor patches.

Smart Lighting

PWM and DMA drive LED dimming without CPU overhead.

Portable Instruments

8KB SRAM handles data logging for handheld meters.

Access Control

Low power and small size suit key fobs and card readers.

Q: What is the core and speed?
A: ARM Cortex-M0+ at 32MHz.
Q: What is the package?
A: 25-UFBGA (WLCSP), ultra-compact.
Q: What are the memory sizes?
A: 32KB flash and 8KB SRAM.
Q: Does it have brown-out detection?
A: Yes, includes BOR, POR, and DMA.
Q: What voltage does it need?
A: 1.8V to 3.6V.
Base Product Number : STM32L031E6Y6
32-bit MCU 32KB Flash 32MHz 8KB SRAM ARM Cortex-M0+ IoT STM32 Ultra-low-power Wearable WLCSP
Q: What is the core and speed?
A: ARM Cortex-M0+ at 32MHz.
Q: What is the package?
A: 25-UFBGA (WLCSP), ultra-compact.
Q: What are the memory sizes?
A: 32KB flash and 8KB SRAM.
Q: Does it have brown-out detection?
A: Yes, includes BOR, POR, and DMA.
Q: What voltage does it need?
A: 1.8V to 3.6V.