STMicroelectronics STM32L151RBT7ATR

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Product attributes Property Value
Manufacturer STMicroelectronics
Product Series STM32L1
Packaging Tape & Reel (TR) | 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 128KB (128K x 8)
Program Memory Type FLASH
EEPROM Size 4K x 8
RAM Size 32K 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 ~ 105°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 STM32L151RBT7A from STMicroelectronics is a low-power ARM Cortex-M3 microcontroller running at 32MHz. It features 128KB of flash and 32KB of RAM, with a supply range of 1.8V to 3.6V. Integrated peripherals include capacitive sensing, DMA, I2S, PWM, and brown-out detection, making it ideal for energy-conscious industrial and consumer applications.

  • Integrated Cap Sense: Eliminates external touch controllers, saving BOM cost and PCB area.
  • High-Temperature Rating: Operates up to 105°C, suitable for demanding industrial environments.
  • Rich Peripheral Set: I2S, DMA, and PWM enable complex audio and motor control applications.
  • Low-Power Design: Optimized for battery-powered devices with multiple low-power modes.

Touch-Sensitive Control Panels

The integrated capacitive sensing (Cap Sense) eliminates external touch ICs, reducing cost in white goods and industrial HMI panels.

Battery-Powered Data Loggers

Low-power Cortex-M3 with 128KB flash stores extended logs, while 32KB RAM buffers sensor data before writing to external memory.

Audio Processing for IoT Devices

The I2S interface enables direct connection to audio codecs for voice-controlled smart speakers or sound detection systems.

Precision Industrial Sensors

With -40°C to 105°C operation and robust brown-out detection, it suits harsh factory floor environments for pressure or flow sensors.

Medical Infusion Pumps

DMA and PWM allow precise motor control for peristaltic pumps, while the wide temperature range ensures reliability in clinical settings.

Smart Building HVAC Controllers

Cap Sense for user input, PWM for fan speed control, and I2S for optional voice alerts make it a complete HVAC solution.

Q: What is the core processor of the STM32L151RBT7A?
A: It uses an ARM Cortex-M3 core at 32MHz.
Q: What is the supply voltage range?
A: It operates from 1.8V to 3.6V.
Q: How much flash and RAM does it have?
A: It provides 128KB of flash and 32KB of RAM.
Q: What package is available?
A: It comes in a 64-pin LQFP package.
Q: What special features are included?
A: It includes capacitive sensing, DMA, I2S, PWM, and brown-out detection.
Base Product Number : STM32L151RBT7A
128KB Flash 32-bit MCU 32KB RAM 32MHz ARM Cortex-M3 Cap Sense DMA I2S Industrial Low Power LQFP-64 PWM STM32L1 STMicroelectronics
Q: What is the core processor of the STM32L151RBT7A?
A: It uses an ARM Cortex-M3 core at 32MHz.
Q: What is the supply voltage range?
A: It operates from 1.8V to 3.6V.
Q: How much flash and RAM does it have?
A: It provides 128KB of flash and 32KB of RAM.
Q: What package is available?
A: It comes in a 64-pin LQFP package.
Q: What special features are included?
A: It includes capacitive sensing, DMA, I2S, PWM, and brown-out detection.