STMicroelectronics STM32L151C6U6A

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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 37
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 16x12b; D/A 2x12b
Oscillator Type 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 STM32L151C6U6A is a low-power ARM Cortex-M3 MCU from STMicroelectronics. It operates at 32MHz with 32KB flash and 16KB SRAM. The device includes capacitive touch sensing, I2S audio, and multiple analog peripherals. Its 1.8V to 3.6V supply range and low-power modes are optimized for battery life. Available in a 48-UFQFN package.

  • Low power consumption: Ideal for energy-harvesting and battery devices.
  • Cap Sense touch: Reduces external components for user interfaces.
  • Mature Cortex-M3 core: Reliable and well-supported ecosystem.
  • Compact package: 48-UFQFN saves board space.

Battery-Powered Sensors

The 32MHz Cortex-M3 with low-power modes ensures years of operation from a coin cell.

Medical Wearables

Cap Sense touch buttons and I2S audio support enable compact fitness bands.

Industrial Process Controllers

Multiple timers and 12-bit ADC handle PID loops for temperature or flow control.

Smart Access Systems

Its DMA and UART peripherals manage RFID readers and lock actuators efficiently.

Portable Test Equipment

The small UFQFN package and low power make it ideal for handheld multimeters.

Home Automation Hubs

With I2S and PWM, it drives audio alerts and LED indicators in smart switches.

Q: What core does the STM32L151C6U6A use?
A: ARM Cortex-M3 at 32MHz.
Q: What is the supply voltage?
A: 1.8V to 3.6V.
Q: How much flash and RAM?
A: 32KB flash and 16KB RAM.
Q: Does it have capacitive touch support?
A: Yes, it includes Cap Sense touch channels.
Q: What package is this?
A: 48-UFQFN exposed pad.
Base Product Number : STM32L151C6U6
16KB RAM 32-bit MCU 32KB Flash 32MHz ARM Cortex-M3 CapSense Industrial Low-power Medical STM32L151C6U6A STMicroelectronics UFQFN-48
Q: What core does the STM32L151C6U6A use?
A: ARM Cortex-M3 at 32MHz.
Q: What is the supply voltage?
A: 1.8V to 3.6V.
Q: How much flash and RAM?
A: 32KB flash and 16KB RAM.
Q: Does it have capacitive touch support?
A: Yes, it includes Cap Sense touch channels.
Q: What package is this?
A: 48-UFQFN exposed pad.