STM32L052R6

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Ultra-low-power Arm Cortex-M0+ MCU with 32 Kbytes of Flash memory, 32 MHz CPU, USB

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Product overview

Description

The ultra-low-power STM32L052x6/8 microcontrollers incorporate the connectivity power of the universal serial bus (USB 2.0 crystal-less) with the high-performance Arm® Cortex®-M0+ 32-bit RISC core operating at a 32 MHz frequency, a memory protection unit (MPU), high-speed embedded memories (64 Kbytes of Flash program memory, 2 Kbytes of data EEPROM and 8 Kbytes of RAM) plus an extensive range of enhanced I/Os and peripherals.

The STM32L052x6/8 devices provide high power efficiency for a wide range of performance. It is achieved with a large choice of internal and external clock sources, an internal voltage adaptation and several low-power modes.

The STM32L052x6/8 devices offer several analog features, one 12-bit ADC with hardware oversampling, one DAC, two ultra-low-power comparators, several timers, one low-power timer (LPTIM), three general-purpose 16-bit timers and one basic timer, one RTC and one SysTick which can be used as timebases. They also feature two watchdogs, one watchdog with independent clock and window capability and one window watchdog based on bus clock.

Moreover, the STM32L052x6/8 devices embed standard and advanced communication interfaces: up to two I2C, two SPIs, one I2S, two USARTs, a low-power UART (LPUART), and a crystal-less USB. The devices offer up to 24 capacitive sensing channels to simply add touch sensing functionality to any application.

The STM32L052x6/8 also include a real-time clock and a set of backup registers that remain powered in Standby mode.

The ultra-low-power STM32L052x6/8 devices operate from a 1.8 to 3.6 V power supply (down to 1.65 V at power down) with BOR and from a 1.65 to 3.6 V power supply without BOR option. They are available in the -40 to +125 °C temperature range. A comprehensive set of power-saving modes allows the design of low-power applications.

  • All features

    • Ultra-low-power platform
      • 1.65 V to 3.6 V power supply
      • -40 to 125 °C temperature range
      • 0.27 μA Standby mode (2 wakeup pins)
      • 0.4 μA Stop mode (16 wakeup lines)
      • 0.8 μA Stop mode + RTC + 8 KB RAM retention
      • 88 μA/MHz in Run mode
      • 3.5 μs wakeup time (from RAM)
      • 5 μs wakeup time (from Flash memory)
    • Core: Arm® 32-bit Cortex®-M0+ with MPU
      • From 32 kHz up to 32 MHz max.
      • 0.95 DMIPS/MHz
    • Reset and supply management
      • Ultra-safe, low-power BOR (brownout reset) with 5 selectable thresholds
      • Ultra-low-power POR/PDR
      • Programmable voltage detector (PVD)
    • Clock sources
      • 1 to 25 MHz crystal oscillator
      • 32 kHz oscillator for RTC with calibration
      • High speed internal 16 MHz factory-trimmed RC (+/- 1%)
      • Internal low-power 37 kHz RC
      • Internal multispeed low-power 65 kHz to 4.2 MHz RC
      • Internal self calibration of 48 MHz RC for USB
      • PLL for CPU clock
    • Pre-programmed bootloader
      • USART, SPI supported
    • Development support
      • Serial wire debug supported
    • Up to 51 fast I/Os (45 I/Os 5V tolerant)
    • Memories
      • Up to 64 KB Flash memory with ECC
      • 8KB RAM
      • 2 KB of data EEPROM with ECC
      • 20-byte backup register
      • Sector protection against R/W operation
    • Rich Analog peripherals
      • 12-bit ADC 1.14 Msps up to 16 channels (down to 1.65 V)
      • 12-bit 1 channel DAC with output buffers (down to 1.8 V)
      • 2x ultra-low-power comparators (window mode and wake up capability, down to 1.65 V)
    • Up to 24 capacitive sensing channels supporting touchkey, linear and rotary touch sensors
    • 7-channel DMA controller, supporting ADC, SPI, I2C, USART, DAC, Timers
    • 8x peripheral communication interfaces
      • 1x USB 2.0 crystal-less, battery charging detection and LPM
      • 2x USART (ISO 7816, IrDA), 1x UART (low power)
      • Up to 4x SPI 16 Mbits/s
      • 2x I2C (SMBus/PMBus)
    • 9x timers: 1x 16-bit with up to 4 channels, 2x 16-bit with up to 2 channels, 1x 16-bit ultra-low-power timer, 1x SysTick, 1x RTC, 1x 16-bit basic for DAC, and 2x watchdogs (independent/window)
    • CRC calculation unit, 96-bit unique ID
    • True RNG and firewall protection
    • All packages are ECOPACK®2

Circuit Diagram

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Quality and Reliability

Part Number Marketing Status Package SMPS Grade RoHS Compliance Grade Material Declaration**
STM32L052R6H6
Active
TFBGA 64 5x5x1.2 P 0.5 mm - Industrial Ecopack2
STM32L052R6T6
Active
LQFP 64 10x10x1.4 mm - Industrial Ecopack2

STM32L052R6H6

Package:

TFBGA 64 5x5x1.2 P 0.5 mm

Material Declaration**:

PDF XML

Marketing Status

Active

Package

TFBGA 64 5x5x1.2 P 0.5 mm

SMPS

-

Grade

Industrial

STM32L052R6T6

Package:

LQFP 64 10x10x1.4 mm

Material Declaration**:

PDF XML

Marketing Status

Active

Package

LQFP 64 10x10x1.4 mm

SMPS

-

Grade

Industrial

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

Sample & Buy

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Part Number
Marketing Status
Budgetary Price (US$)*/Qty
Order from ST
Order from distributors
Package
Packing Type
RoHS
Country of Origin
ECCN (US)
ECCN (EU)
Temperature (°C)
D/A Converters (typ) (12-bit)
Timers (typ) (16-bit)
Timers (typ) (32-bit)
Number of Channels (typ)
SMPS
Number of Channels (typ)
UART (typ)
I/Os (High Current)
Integrated op-amps
Comparator
SPI (typ)
USART (typ)
Number of Channels (typ)
I2S (typ)
Advanced Motor Control Timers
CAN (2.0)
CAN (FD)
min
max
STM32L052R6T6
Available at distributors

Distributor availability of STM32L052R6T6

Distributor Name
Region Stock Min. Order Third party link

Distributor reported inventory date:

No availability of distributors reported, please contact our sales office

STM32L052R6H6
Available at distributors

Distributor availability of STM32L052R6H6

Distributor Name
Region Stock Min. Order Third party link

Distributor reported inventory date:

No availability of distributors reported, please contact our sales office

STM32L052R6T6 Active

Budgetary Price (US$)*/Qty:
-
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):

Part Number:

STM32L052R6T6

Operating Temperature (°C)

Min:

Max:

D/A Converters (typ) (12-bit):

1

Timers (typ) (16-bit):

4

Timers (typ) (32-bit):

-

Number of Channels (typ):

-

SMPS:

-

Number of Channels (typ):

-

UART (typ):

-

I/Os (High Current):

51

Integrated op-amps:

-

Comparator:

2

SPI (typ):

2

USART (typ):

2

Number of Channels (typ):

16

I2S (typ):

1

Advanced Motor Control Timers:

-

CAN (2.0):

-

CAN (FD):

-

STM32L052R6H6 Active

Budgetary Price (US$)*/Qty:
-
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):

Part Number:

STM32L052R6H6

Operating Temperature (°C)

Min:

Max:

D/A Converters (typ) (12-bit):

1

Timers (typ) (16-bit):

4

Timers (typ) (32-bit):

-

Number of Channels (typ):

-

SMPS:

-

Number of Channels (typ):

-

UART (typ):

-

I/Os (High Current):

50

Integrated op-amps:

-

Comparator:

2

SPI (typ):

2

USART (typ):

2

Number of Channels (typ):

16

I2S (typ):

1

Advanced Motor Control Timers:

-

CAN (2.0):

-

CAN (FD):

-

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(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors