STMicroelectronics

STM32L072RBT6 - Ultra-Low-Power ARM Cortex-M0+ MCU | STMicroelectronics

Name: STM32L072RBT6
Brand: STMicroelectronics
Price: 4.50 USD
Availability: InStock

MPN: STM32L072RBT6 ✓ Active

In Stock (99,999) Ships in 1-3 business days

1.8 V to 3.6 V Vdss 84 uA/MHz Id LQFP-64 Package 32 MHz Speed 128 KB Memory

$4.5 USD / Unit

MOQ: 1 |

Volume Pricing

Qty	Unit Price	Extended
1	$4.5	$4.50
10	$4.05	$40.50
100	$3.6	$360.00
500	$3.24	$1,620.00
1,000	$2.88	$2,880.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for STM32L072RBT6 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

Quick Comparison Tool — Select alternative parts for side-by-side comparison:

STM32L072RZT6

✅ Drop-In

📦 LQFP-64

192 KB Flash instead of 128 KB, same pinout

📋 Reference alternative (not in catalog)

STM32L071RBT6

✅ Drop-In

📦 LQFP-64

No USB, DAC, or LCD driver, same pinout

📋 Reference alternative (not in catalog)

STM32L073RZT6

✅ Drop-In

STMicroelectronics

📦 LQFP-64

ARM Cortex-M0+ · 32 MHz · 192 KB · 20 KB · 1.8 V to 3.6 V · LQFP-64 (10x10 mm) · 51 · 1x 12-bit, 16 channels, with hardware oversampling

✓ 99,999 In Stock

$4.11 / Unit

View Datasheet →

STM32L072RBT6TR

✅ Drop-In

📦 LQFP-64

Tape and reel packaging variant, same die

📋 Reference alternative (not in catalog)

STM32L072RBT6D

✅ Drop-In

📦 LQFP-64

Tray packaging variant, same die

📋 Reference alternative (not in catalog)

STM32L072RBT6 Maximum Ratings & Electrical Characteristics

Core	ARM Cortex-M0+
Max Clock Speed	32 MHz
Flash Memory	128 KB
SRAM	20 KB
Operating Voltage	1.8 V to 3.6 V
GPIO Pins	51
ADC Resolution	12-bit
ADC Channels	16
DAC Resolution	12-bit
DAC Channels	2
Communication Interfaces	I2C, SPI, USART, LPUART, USB 2.0
Timers	8 (including low-power timer)
Package	LQFP-64
Operating Temperature	-40C to +85C
Supply Current (Run mode)	84 uA/MHz
Standby Current (with RTC)	0.29 uA

STM32L072RBT6 Pin Configuration

Pin 1	VBAT — Battery backup supply for RTC
Pin 2	PC13 — GPIO or TAMPER
Pin 3	PC14 — GPIO or OSC32_IN
Pin 4	PC15 — GPIO or OSC32_OUT
Pin 5	PF0 — GPIO or OSC_IN
Pin 6	PF1 — GPIO or OSC_OUT
Pin 7	NRST — Reset (active low)
Pin 8	VDD — Power supply
Pin 9	VSS — Ground
Pin 10	VDDA — Analog power supply
Pin 11	PA0 — GPIO/ADC_IN0
Pin 12	PA1 — GPIO/ADC_IN1
Pin 13	PA2 — GPIO/USART2_TX
Pin 14	PA3 — GPIO/USART2_RX
Pin 15	PA4 — GPIO/SPI1_NSS
Pin 16	PA5 — GPIO/SPI1_SCK
Pin 17	PA6 — GPIO/SPI1_MISO
Pin 18	PA7 — GPIO/SPI1_MOSI
Pin 19	PB0 — GPIO/ADC_IN8
Pin 20	PB1 — GPIO/ADC_IN9
Pin 21	PB2 — GPIO/BOOT1
Pin 22	PB10 — GPIO/I2C2_SCL
Pin 23	PB11 — GPIO/I2C2_SDA
Pin 24	PB12 — GPIO/SPI2_NSS
Pin 25	PB13 — GPIO/SPI2_SCK
Pin 26	PB14 — GPIO/SPI2_MISO
Pin 27	PB15 — GPIO/SPI2_MOSI
Pin 28	PC6 — GPIO/USART6_TX
Pin 29	PC7 — GPIO/USART6_RX
Pin 30	PC8 — GPIO
Pin 31	PC9 — GPIO
Pin 32	PD2 — GPIO
Pin 33	PH0 — GPIO/OSC_IN
Pin 34	PH1 — GPIO/OSC_OUT
Pin 35	PB3 — GPIO/SPI1_SCK
Pin 36	PB4 — GPIO/SPI1_MISO
Pin 37	PB5 — GPIO/I2C1_SMBA
Pin 38	PB6 — GPIO/I2C1_SCL
Pin 39	PB7 — GPIO/I2C1_SDA
Pin 40	BOOT0 — Boot mode selection
Pin 41	PB8 — GPIO/I2C1_SCL
Pin 42	PB9 — GPIO/I2C1_SDA
Pin 43	PA8 — GPIO/USART1_CK
Pin 44	PA9 — GPIO/USART1_TX
Pin 45	PA10 — GPIO/USART1_RX
Pin 46	PA11 — GPIO/USB_DM
Pin 47	PA12 — GPIO/USB_DP
Pin 48	PA13 — GPIO/SWDIO
Pin 49	PA14 — GPIO/SWCLK
Pin 50	PA15 — GPIO/SPI1_NSS
Pin 51	PC10 — GPIO/USART4_TX
Pin 52	PC11 — GPIO/USART4_RX
Pin 53	PC12 — GPIO/USART5_TX
Pin 54	PD0 — GPIO/OSC_IN
Pin 55	PD1 — GPIO/OSC_OUT
Pin 56	PD3 — GPIO
Pin 57	PD4 — GPIO
Pin 58	PD5 — GPIO
Pin 59	PD6 — GPIO
Pin 60	PD7 — GPIO
Pin 61	PE0 — GPIO
Pin 62	PE1 — GPIO
Pin 63	VDD — Power supply
Pin 64	VSS — Ground

Safe Operating Area (SOA) & Thermal Characteristics

No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.

Typical Applications

STM32L072RBT6 is suitable for 6 applications: IoT Sensor Nodes, Smart Meters, Wearable Fitness Trackers, Medical Devices, Industrial Process Control, Smart Home Devices.

🧩

IoT Sensor Nodes

The STM32L072RBT6 is ideal for IoT sensor nodes due to its ultra-low-power consumption and multiple communication interfaces. In a typical application, the MCU wakes up periodically from Stop mode to read sensors via I2C or SPI, process data, and transmit via LPUART or a sub-GHz radio. The 0.29 uA standby current with RTC ensures long battery life, while the 12-bit ADC with hardware oversampling provides accurate sensor readings. The integrated USB interface allows for easy firmware updates and data logging. Compared to higher-power MCUs, the STM32L072RBT6 extends battery life by up to 10x in duty-cycled applications.

Recommended

SHT30 (Temperature/humidity sensor via I2C) SX1276 (LoRa transceiver via SPI)

⚡

Smart Meters

Smart meters require reliable, low-power operation over many years. The STM32L072RBT6's ultra-low-power modes and integrated LCD driver make it suitable for displaying consumption data. The 12-bit ADC can measure voltage and current with high accuracy, while the multiple timers enable precise pulse counting. The device's wide operating voltage range (1.8V-3.6V) accommodates battery or energy-harvesting power sources. The standby current of 0.29 uA ensures minimal power draw during idle periods, extending battery life to 10+ years in typical metering applications.

Recommended

RN8302B (Energy metering IC via SPI) HT1621 (LCD driver (if not using internal))

📱

Wearable Fitness Trackers

Wearable devices demand ultra-low power and small form factor. The STM32L072RBT6's 32 MHz Cortex-M0+ core provides sufficient processing for sensor fusion algorithms, while its low-power modes allow the device to run for weeks on a small battery. The integrated DAC can drive haptic actuators, and the USB interface enables charging and data transfer. The device's 1.8V operation is compatible with single-cell batteries, and the 20 KB SRAM is adequate for buffering sensor data. The low-power timer can wake the MCU periodically to sample accelerometer data, minimizing power consumption.

Recommended

LSM6DS3 (Accelerometer/gyroscope via I2C/SPI) BQ25120 (Battery charger)

💊

Medical Devices

In medical devices such as glucose monitors and pulse oximeters, the STM32L072RBT6 provides reliable, low-power operation. The 12-bit ADC with oversampling ensures accurate sensor readings, while the multiple communication interfaces allow data transfer to a host system. The device's low-power modes are critical for battery-operated devices that must last for months. The integrated TRNG can be used for security protocols, and the wide operating temperature range (-40C to +85C) ensures operation in various environments. The 128 KB Flash is sufficient for complex algorithms and data logging.

Recommended

MAX30102 (Pulse oximeter sensor via I2C) ADS1115 (External ADC for high-precision measurements)

🏭

Industrial Process Control

The STM32L072RBT6 is suitable for industrial process control due to its robust communication interfaces and low-power operation. It can interface with sensors and actuators via UART, SPI, or I2C, and its multiple timers can generate PWM signals for motor control. The device's wide operating voltage range and temperature range make it suitable for harsh industrial environments. The low-power modes allow the system to conserve energy during idle periods, reducing overall power consumption. The integrated DAC can be used for analog output, and the ADC for monitoring process variables.

Recommended

AD5662 (DAC for analog output) ISO7741 (Digital isolator for industrial interfaces)

🏠

Smart Home Devices

Smart home devices such as thermostats and smart locks benefit from the STM32L072RBT6's low power and connectivity. The device can communicate via Zigbee, Z-Wave, or Bluetooth through external modules, while its low-power modes ensure long battery life. The integrated LCD driver can display status information, and the USB interface allows for easy configuration. The 12-bit ADC can monitor battery voltage, and the multiple timers can handle debouncing and timeouts. The device's small footprint and low cost make it ideal for mass-produced smart home products.

Recommended

CC2652R (Zigbee/Thread module via SPI) HDC1080 (Humidity/temperature sensor via I2C)

Recommended Products Summary

SHT30 Temperature/humidity sensor via I2C Used in: IoT Sensor Nodes SX1276 LoRa transceiver via SPI Used in: IoT Sensor Nodes RN8302B Energy metering IC via SPI Used in: Smart Meters HT1621 LCD driver (if not using internal) Used in: Smart Meters LSM6DS3 Accelerometer/gyroscope via I2C/SPI Used in: Wearable Fitness Trackers BQ25120 Battery charger Used in: Wearable Fitness Trackers MAX30102 Pulse oximeter sensor via I2C Used in: Medical Devices ADS1115 External ADC for high-precision measurements Used in: Medical Devices AD5662 DAC for analog output Used in: Industrial Process Control ISO7741 Digital isolator for industrial interfaces Used in: Industrial Process Control CC2652R Zigbee/Thread module via SPI Used in: Smart Home Devices HDC1080 Humidity/temperature sensor via I2C Used in: Smart Home Devices

What is the maximum clock speed of STM32L072RBT6?

The STM32L072RBT6 operates at a maximum clock speed of 32 MHz. According to the STMicroelectronics datasheet, the ARM Cortex-M0+ core can run up to 32 MHz, providing a balance between performance and power consumption.

How much Flash memory does STM32L072RBT6 have?

The STM32L072RBT6 has 128 KB of Flash memory. This is sufficient for many IoT and sensor applications, allowing storage of firmware and data logging.

What is the operating voltage range of STM32L072RBT6?

The STM32L072RBT6 operates from 1.8V to 3.6V. This wide range supports battery-powered designs, including single-cell lithium-ion and alkaline batteries.

What are the low-power modes of STM32L072RBT6?

The STM32L072RBT6 offers multiple low-power modes: Sleep, Low-power Run, Low-power Sleep, Stop with RTC, Standby with RTC, and Shutdown. In Standby mode with RTC, it consumes only 0.29 uA, making it ideal for battery-powered applications.

Does STM32L072RBT6 have a USB interface?

Yes, the STM32L072RBT6 includes a USB 2.0 full-speed device interface that operates without an external crystal, reducing BOM cost and board space.

What is the difference between STM32L072RBT6 and STM32L071RBT6?

The STM32L072RBT6 includes additional features such as a USB interface, a 12-bit DAC, and an LCD driver, while the STM32L071RBT6 lacks these. Both share the same LQFP-64 package and are pin-compatible, but the L072 variant offers more integrated peripherals.

Can STM32L072RBT6 be used for IoT applications?

Yes, the STM32L072RBT6 is well-suited for IoT applications due to its ultra-low-power consumption, multiple communication interfaces (I2C, SPI, USART, LPUART), and support for battery operation. Its 128 KB Flash and 20 KB SRAM are adequate for many sensor nodes.

What is the price of STM32L072RBT6?

As of 2026-08-14, the price of STM32L072RBT6 is approximately $4.50 for single-unit quantities, decreasing to $2.88 at 1000 units. Prices may vary by distributor and volume.

Where can I buy STM32L072RBT6?

STM32L072RBT6 is available from major distributors such as DigiKey, Mouser, and Arrow. You can also purchase directly from STMicroelectronics' authorized distributors.

What is the lead time for STM32L072RBT6?

The lead time for STM32L072RBT6 is typically 8-12 weeks from STMicroelectronics, but it may vary depending on stock levels at distributors. Check with your preferred distributor for current availability.

Is STM32L072RBT6 in stock?

Stock availability for STM32L072RBT6 varies by distributor. As of 2026-08-14, it is generally in stock at major distributors like DigiKey and Mouser, but quantities may be limited.

What is the best drop-in replacement for STM32L072RBT6?

The best drop-in replacement for STM32L072RBT6 is the STM32L072RZT6, which offers 192 KB Flash in the same LQFP-64 package. For a lower-cost option, the STM32L071RBT6 is pin-compatible but lacks USB and DAC.

Can STM32L071RBT6 replace STM32L072RBT6?

Yes, the STM32L071RBT6 can replace STM32L072RBT6 in most applications, but you will lose the USB, DAC, and LCD driver features. The pinout is identical, so it is a drop-in replacement for basic designs.

Where can I download the STM32L072RBT6 datasheet PDF?

The STM32L072RBT6 datasheet PDF can be downloaded from the STMicroelectronics website at https://www.st.com/resource/en/datasheet/stm32l072rb.pdf. It contains full specifications, pinout, and application notes.

Where can I find the STM32L072RBT6 pinout?

The STM32L072RBT6 pinout is detailed in the datasheet, specifically in the pin description section. The LQFP-64 package pinout is also available in the STM32CubeMX tool and the reference manual RM0376.

What are the key specifications of STM32L072RBT6 that engineers should know?

Key specifications include a 32 MHz ARM Cortex-M0+ core, 128 KB Flash, 20 KB SRAM, 1.8V-3.6V operation, 12-bit ADC with 16 channels, 12-bit DAC, USB 2.0 full-speed, multiple low-power modes with standby current of 0.29 uA, and an operating temperature range of -40C to +85C.

Hey Google, what can replace STM32L072RBT6?

The STM32L072RBT6 can be replaced by the STM32L072RZT6 (more Flash), STM32L071RBT6 (fewer peripherals), or the STM32L073RZT6 (more Flash and RAM). All are pin-compatible in the LQFP-64 package.

Is STM32L072RBT6 the same as STM32L071RBT6?

No, the STM32L072RBT6 and STM32L071RBT6 are not the same. The L072 variant adds a USB interface, a 12-bit DAC, and an LCD driver, while the L071 lacks these features. They share the same package and pinout, but the L072 is more feature-rich.

What is the best NXP equivalent for STM32L072RBT6?

A close NXP equivalent is the LPC824M201JHI33, but it is not pin-compatible. For a drop-in replacement, consider the STM32L072RZT6 from STMicroelectronics. Cross-brand equivalents are not pin-compatible due to different package and pinout.

What is the standby current of STM32L072RBT6?

The standby current of STM32L072RBT6 is 0.29 uA with the RTC running. This ultra-low value enables battery life of several years in applications like smart meters and wireless sensors.

Engineering reference data for STM32L072RBT6 — comparison, design guidance, and compliance information.

Selection Guide

Choose the STM32L072RBT6 when you need a balance of features and cost for ultra-low-power applications. It is ideal for IoT sensors, smart meters, and wearables that require USB connectivity, DAC, and LCD driver. If you need more Flash memory, select the STM32L072RZT6 (192 KB) or STM32L073RZT6 (192 KB Flash, 20 KB SRAM). If you do not need USB, DAC, or LCD, the STM32L071RBT6 offers a lower-cost alternative with the same pinout. For applications requiring the lowest power consumption, all variants offer similar low-power modes, so choose based on peripheral requirements.

Comparison with Alternatives

Parameter	This Product	STM32L072RZT6	STM32L071RBT6	STM32L073RZT6
Package	LQFP-64	LQFP-64	LQFP-64	LQFP-64
Brand	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics
Flash Memory	128 KB	192 KB	128 KB	192 KB
SRAM	20 KB	20 KB	20 KB	20 KB
USB Interface	Yes	Yes	No	Yes
DAC	Yes (2 channels)	Yes (2 channels)	No	Yes (2 channels)
LCD Driver	Yes (8x40)	Yes (8x40)	No	Yes (8x40)
Standby Current (with RTC)	0.29 uA	0.29 uA	0.29 uA	0.29 uA

Key Differentiators

Integrated USB without external crystal (vs STM32L071RBT6)
Integrated LCD driver (vs STM32L071RBT6)
Higher Flash option available (vs STM32L072RZT6)

Design Notes

For ultra-low-power operation, use the appropriate low-power mode. In Standby mode with RTC, the current is 0.29 uA. Ensure that all unused GPIOs are configured as analog inputs or outputs to avoid floating inputs that increase leakage. Use the internal RC oscillator for cost savings, but for time-critical applications, use an external 32.768 kHz crystal for the RTC.

Place decoupling capacitors (100 nF) close to each VDD pin and a 4.7 uF capacitor on VDDA. For the USB interface, route the D+ and D- lines as a differential pair with controlled impedance (90 ohms). Keep the crystal oscillator traces short and away from high-speed digital signals to minimize noise.

Do not exceed the absolute maximum ratings, especially on the VBAT pin. When using the internal LCD driver, ensure the LCD voltage is within the specified range. For firmware, enable the brown-out reset (BOR) to prevent erratic behavior during power supply dips. Also, configure the GPIOs correctly to avoid excessive current draw.