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STMicroelectronics STM32L052C6U6 — Microcontrollers & Processors (MCU / MPU / DSP)
STMicroelectronics

STM32L052C6U6 ARM Cortex-M0+ MCU, 32 MHz, 32 KB Flash

MPNSTM32L052C6U6
Active

STMicroelectronics STM32L052C6U6, STM32L0 series, 32-bit ARM Cortex-M0+ MCU, 32 MHz, 32 KB Flash, 8 KB SRAM, 2 KB EEPROM, USB, 1.65 V to 3.6 V, -40°C to 85°C, 48-UFQFPN (7x7 mm).

$2.7005Ref. price · indicative, final on quote
STM32L052C6U6 datasheet
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Specifications

STM32L052C6U6 Technical Specifications
ParameterValue
SeriesSTM32L0
Mounting typeSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.65V ~ 3.6V
Operating temperature-40°C~85°C(TA)
Speed32MHz
PackageTray
RAM size8K x 8
Core size32-Bit Single-Core
EEPROM size2K x 8
PeripheralsBrown-out Detect/Reset, DMA, I²S, POR, PWM, WDT
ConnectivityI²C, IrDA, SPI, UART/USART, USB
Number of i (O)37
Core processorARM® Cortex®-M0+
Case48-UFQFN Exposed Pad
Data convertersA/D 10x12b; D/A 1x12b
Program memory size32KB (32K x 8)

Product details

With USB connectivity, a 12-bit ADC (10 channels), and a 12-bit DAC, it targets sensor nodes, IoT endpoints, and portable instruments where every microamp counts.

Supply rail flexibility — 1.65 V minimum

The 1.65 V minimum supply is the standout feature for single-cell battery designs. A 1.5 V alkaline cell fresh off the shelf sits at 1.6 V, so the MCU boots and runs without a regulator. At the 3.6 V top end it can take a Li-Po cell direct. The brown-out detect and POR peripherals (listed in the spec table) protect against supply droop during battery discharge.

48-UFQFPN package — layout notes

The pad is electrically connected to VSS, so the via pattern must not short to other nets. The 37 I/O count is enough for a USB + sensor interface but leaves no room for a parallel LCD or external memory bus.

Listed as Active by STMicroelectronics.

Frequently asked questions

What is the flash size of STM32L052C6U6?

That is enough for a lightweight RTOS, sensor-fusion firmware, or a USB CDC stack.

Can STM32L052C6U6 be programmed with ST-Link?

Yes, the STM32L052C6U6 has a standard SWD debug interface (part of the STM32L0 family). An ST-Link/V2 or ST-Link/V3 programmer connects to the SWDIO and SWCLK pins. The internal oscillator is enabled by default, so no external clock is needed for first programming.