STMicroelectronics STM32L151R6T6A

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Product attributes Property Value
Manufacturer STMicroelectronics
Product Series STM32L1
Packaging Tray | NULL
Core Processor ARM® Cortex®-M3
Core Size 32-Bit Single-Core
Speed 32MHz
Connectivity I2C, IrDA, LINbus, SPI, UART/USART, USB
Peripherals Brown-out Detect/Reset, Cap Sense, DMA, I2S, POR, PWM, WDT
Number of I/O 51
Program Memory Size 32KB (32K x 8)
Program Memory Type FLASH
EEPROM Size 4K x 8
RAM Size 16K x 8
Voltage - Supply (Vcc/Vdd) 1.8V ~ 3.6V
Data Converters A/D 20x12b; D/A 2x12b
Oscillator Type Internal
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification AEC -
Mounting Type Surface Mount
Supplier Device Package 64-LQFP (10x10)
Package / Case 64-LQFP
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The STM32L151R6T6A is an ultra-low-power ARM Cortex-M3 microcontroller from STMicroelectronics, designed for energy-conscious applications. Operating at up to 32MHz, it balances performance with efficiency across a 1.8V to 3.6V supply range. It features 32KB flash and 16KB SRAM, sufficient for lightweight firmware. The 64-pin LQFP package offers ample I/O for peripheral integration. Its unique Cap Sense technology enables direct capacitive touch sensing, reducing BOM cost in human-machine interfaces.

  • Ultra-low power consumption: Optimized for battery life in portable and wireless devices.
  • Integrated Cap Sense: Eliminates external touch controller, saving cost and board space.
  • Robust reliability: Brown-out detect/reset and WDT ensure stable operation in fluctuating power conditions.
  • Wide supply range: 1.8V-3.6V supports various battery chemistries.

Battery-Powered Wearables

The 1.8V minimum supply and low-power Cortex-M3 core enable long battery life for fitness trackers and smartwatches.

Touch-Enabled Home Appliances

Integrated Cap Sense allows implementing capacitive touch interfaces for microwaves or washing machines without external touch ICs.

Smart Meters

With brown-out detection and DMA, it reliably logs consumption data in utility meters while maintaining low average power.

Medical Monitoring Devices

Its low voltage operation and WDT make it suitable for portable ECG or temperature monitors that require continuous operation.

Industrial Sensor Nodes

The 32MHz speed and multiple timers support periodic data acquisition from temperature or pressure sensors in factory settings.

Security Systems

Cap Sense can be used for tamper detection, while PWM drives alarm indicators, all within a low-power envelope.

Q: What is the core architecture?
A: It uses the ARM Cortex-M3 core running at up to 32MHz.
Q: What is the supply voltage range?
A: It operates from 1.8V to 3.6V, ideal for battery-powered applications.
Q: How much flash and RAM does it have?
A: It provides 32KB flash and 16KB SRAM.
Q: Does it have capacitive sensing?
A: Yes, it includes Cap Sense capability for touch buttons and sliders.
Q: What package is available?
A: It comes in a 64-pin LQFP package.
Base Product Number : STM32L151R6T6A
16KB RAM 32KB Flash 32MHz ARM Cortex-M3 Cap Sense LQFP-64 medical smart meter STM32L1 STM32L151R6T6A touch ultra-low-power
Q: What is the core architecture?
A: It uses the ARM Cortex-M3 core running at up to 32MHz.
Q: What is the supply voltage range?
A: It operates from 1.8V to 3.6V, ideal for battery-powered applications.
Q: How much flash and RAM does it have?
A: It provides 32KB flash and 16KB SRAM.
Q: Does it have capacitive sensing?
A: Yes, it includes Cap Sense capability for touch buttons and sliders.
Q: What package is available?
A: It comes in a 64-pin LQFP package.