STM32L053R8T6 - Ultra-Low-Power ARM Cortex-M0+ MCU | STMicroelectronics
MPN: STM32L053R8T6 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.32 | $4.32 |
| 10 | $3.89 | $38.90 |
| 100 | $3.46 | $346.00 |
| 500 | $3.11 | $1,555.00 |
| 1,000 | $2.77 | $2,770.00 |
Drop-in alternatives for STM32L053R8T6 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
STM32L053R8T6TR
β Drop-Inπ Reference alternative (not in catalog)
STM32L053C8T6
β Drop-Inβ In Stock
$2.24 / Unit
View Datasheet βSTM32L052R8T6
β Drop-Inπ Reference alternative (not in catalog)
STM32L053R8T6
β Drop-Inβ In Stock
$2.77 / Unit
View Datasheet βLPC824M201JHI33
β Drop-Inπ Reference alternative (not in catalog)
EFM32LG230F64
β Drop-Inπ Reference alternative (not in catalog)
STM32L053R8T6 Maximum Ratings & Electrical Characteristics
| Core | ARM Cortex-M0+ |
| Maximum Clock Frequency | 32 MHz |
| Flash Memory | 64 KB |
| SRAM | 8 KB |
| Package | LQFP-64 (10x10 mm) |
| Supply Voltage Range | 1.8 V to 3.6 V |
| Dynamic Run Current | 84 uA/MHz |
| Standby Current (with RTC) | 0.29 uA |
| ADC Resolution | 12-bit (with hardware oversampling up to 16-bit) |
| DAC Resolution | 12-bit |
| Number of Comparators | 2 (ultra-low-power) |
| RTC | Yes (with calendar) |
| USB | USB 2.0 full-speed device |
| LCD Driver | Up to 8x28 segments |
| Communication Interfaces | I2C, SPI, USART |
| Operating Temperature Range | -40C to +85C |
| RoHS Compliance | Compliant |
STM32L053R8T6 Pin Configuration
| Pin 1 | VBAT β Battery backup supply for RTC |
| Pin 2 | PC14 β GPIO / OSC32_IN |
| Pin 3 | PC15 β GPIO / OSC32_OUT |
| Pin 4 | VSS β Ground |
| Pin 5 | VDD β Power supply |
| Pin 6 | PH0 β GPIO / OSC_IN |
| Pin 7 | PH1 β GPIO / OSC_OUT |
| Pin 8 | NRST β Reset (active low) |
| Pin 9 | PC0 β GPIO / ADC_IN10 |
| Pin 10 | PC1 β GPIO / ADC_IN11 |
| Pin 11 | PC2 β GPIO / ADC_IN12 |
| Pin 12 | PC3 β GPIO / ADC_IN13 |
| Pin 13 | VDD β Power supply |
| Pin 14 | VSS β Ground |
| Pin 15 | PA0 β GPIO / ADC_IN0 / WKUP1 |
| Pin 16 | PA1 β GPIO / ADC_IN1 |
| Pin 17 | PA2 β GPIO / ADC_IN2 / USART2_TX |
| Pin 18 | PA3 β GPIO / ADC_IN3 / USART2_RX |
| Pin 19 | PA4 β GPIO / ADC_IN4 / DAC_OUT1 |
| Pin 20 | PA5 β GPIO / ADC_IN5 / DAC_OUT2 |
| Pin 21 | PA6 β GPIO / ADC_IN6 / SPI1_MISO |
| Pin 22 | PA7 β GPIO / ADC_IN7 / SPI1_MOSI |
| Pin 23 | PC4 β GPIO / ADC_IN14 |
| Pin 24 | PC5 β GPIO / ADC_IN15 |
| Pin 25 | PB0 β GPIO / ADC_IN8 |
| Pin 26 | PB1 β GPIO / ADC_IN9 |
| Pin 27 | PB2 β GPIO / BOOT1 |
| Pin 28 | PB10 β GPIO / I2C2_SCL |
| Pin 29 | PB11 β GPIO / I2C2_SDA |
| Pin 30 | VSS β Ground |
| Pin 31 | VDD β Power supply |
| Pin 32 | PB12 β GPIO / SPI2_NSS |
| Pin 33 | PB13 β GPIO / SPI2_SCK |
| Pin 34 | PB14 β GPIO / SPI2_MISO |
| Pin 35 | PB15 β GPIO / SPI2_MOSI |
| Pin 36 | PC6 β GPIO / USART1_TX |
| Pin 37 | PC7 β GPIO / USART1_RX |
| Pin 38 | PC8 β GPIO / USART1_CK |
| Pin 39 | PC9 β GPIO / USB_DM |
| Pin 40 | PA8 β GPIO / USB_DP |
| Pin 41 | PA9 β GPIO / USART1_TX |
| Pin 42 | PA10 β GPIO / USART1_RX |
| Pin 43 | PA11 β GPIO / USB_DM |
| Pin 44 | PA12 β GPIO / USB_DP |
| Pin 45 | PA13 β GPIO / SWDIO |
| Pin 46 | VSS β Ground |
| Pin 47 | VDD β Power supply |
| Pin 48 | PA14 β GPIO / SWCLK |
| Pin 49 | PA15 β GPIO / SPI1_NSS |
| Pin 50 | PB3 β GPIO / SPI1_SCK |
| Pin 51 | PB4 β GPIO / SPI1_MISO |
| Pin 52 | PB5 β GPIO / SPI1_MOSI |
| Pin 53 | PB6 β GPIO / I2C1_SCL |
| Pin 54 | PB7 β GPIO / I2C1_SDA |
| Pin 55 | BOOT0 β Boot mode selection |
| Pin 56 | PB8 β GPIO / I2C1_SCL |
| Pin 57 | PB9 β GPIO / I2C1_SDA |
| Pin 58 | VSS β Ground |
| Pin 59 | VDD β Power supply |
| Pin 60 | PC10 β GPIO / USART3_TX |
| Pin 61 | PC11 β GPIO / USART3_RX |
| Pin 62 | PC12 β GPIO / USART3_CK |
| Pin 63 | PC13 β GPIO / RTC_TAMP1 |
| Pin 64 | VDD β Power supply |
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
STM32L053R8T6 is suitable for 6 applications: Portable Medical Devices, Wireless IoT Sensor Nodes, Smart Meters, Wearable Electronics, Industrial Sensor Interfaces, Energy Harvesting Systems.
Portable Medical Devices
The STM32L053R8T6 is ideal for portable medical devices such as glucose meters, pulse oximeters, and wearable health monitors. Its ultra-low-power consumption (84 uA/MHz in Run mode, 0.29 uA in Standby with RTC) extends battery life, while the integrated 12-bit ADC with oversampling enables precise sensor measurements. The RTC with calendar allows time-stamping of patient data, and the wide supply voltage range (1.8V-3.6V) accommodates various battery configurations. In a typical glucose meter, the MCU wakes periodically to read the sensor, process the data, and display results on an LCD, then returns to sleep to conserve power. The LCD driver supports up to 8x28 segments, enabling a clear display without additional components. Designers should ensure proper decoupling and use the low-power modes to maximize battery life, which is critical for patient compliance and device reliability.
Recommended
Wireless IoT Sensor Nodes
The STM32L053R8T6 is well-suited for wireless IoT sensor nodes that require long battery life and reliable operation. Its ultra-low-power modes, including a standby current of 0.29 uA with RTC, allow the device to sleep for extended periods and wake only to take measurements and transmit data. The integrated 12-bit ADC with hardware oversampling provides high-resolution sensor readings, while the USART, SPI, and I2C interfaces enable connection to various wireless modules (e.g., LoRa, BLE, Zigbee). In a typical environmental monitoring node, the MCU reads temperature and humidity sensors, processes the data, and sends it via a LoRa module, then returns to sleep. The wide supply voltage range (1.8V-3.6V) supports battery or energy-harvesting power sources. Designers should configure the RTC and wake-up sources to minimize average current consumption, and use the low-power timer to schedule periodic measurements.
Recommended
Smart Meters
The STM32L053R8T6 is an excellent choice for smart metering applications such as electricity, water, and gas meters. Its ultra-low-power consumption ensures long-term operation on battery power, which is essential for meters that must run for years without maintenance. The integrated 12-bit ADC with oversampling enables accurate measurement of analog signals from current and voltage sensors, while the RTC provides precise time-stamping for usage data. The LCD driver supports up to 8x28 segments, allowing direct display of consumption data without an external driver. Communication interfaces like USART and SPI facilitate connection to communication modules for remote reading. In a typical electricity meter, the MCU periodically samples the power line, calculates energy consumption, updates the LCD, and transmits data via a wireless module. Designers should use the low-power modes to minimize current draw and ensure accurate ADC calibration for metering accuracy.
Recommended
Wearable Electronics
The STM32L053R8T6 is perfect for wearable electronics like fitness trackers, smartwatches, and health monitors. Its compact 64-pin LQFP package (10x10 mm) and ultra-low-power operation make it suitable for space-constrained, battery-powered devices. The integrated 12-bit ADC and comparators enable sensor interfacing for heart rate, motion, and temperature monitoring. The RTC with calendar allows time-stamping of activity data, and the LCD driver can directly drive a small display. In a typical fitness tracker, the MCU reads an accelerometer, processes step count, and displays it on an LCD, while spending most of the time in sleep mode to conserve battery. The wide supply voltage range (1.8V-3.6V) supports coin-cell batteries. Designers should optimize the firmware to use low-power modes and minimize wake-up frequency to extend battery life.
Recommended
Industrial Sensor Interfaces
The STM32L053R8T6 is well-suited for industrial sensor interfaces that require low power and reliable operation in harsh environments. Its wide supply voltage range (1.8V-3.6V) and operating temperature range (-40C to +85C) make it suitable for industrial applications. The integrated 12-bit ADC with oversampling provides accurate readings from various sensors, while the communication interfaces (I2C, SPI, USART) enable connection to industrial networks. The ultra-low-power modes allow the device to operate on battery or energy-harvesting sources in remote locations. In a typical industrial pressure sensor interface, the MCU reads the sensor, linearizes the output, and transmits data via a 4-20 mA loop or digital interface. Designers should ensure proper ESD protection and decoupling for industrial environments, and use the low-power modes to extend battery life in remote installations.
Recommended
Energy Harvesting Systems
The STM32L053R8T6 is an excellent choice for energy harvesting systems that rely on solar, thermal, or vibration energy. Its ultra-low-power consumption, with a standby current of 0.29 uA, allows the device to operate on tiny amounts of harvested energy. The wide supply voltage range (1.8V-3.6V) is compatible with typical energy harvesting power management ICs. The integrated ADC and comparators enable monitoring of energy storage levels and sensor data. In a typical solar-powered sensor node, the MCU wakes periodically to take measurements, transmit data, and then sleeps to conserve energy. The RTC provides accurate timekeeping even in sleep mode. Designers should use the low-power modes aggressively and optimize the duty cycle to match the energy harvesting source's capacity.
Recommended
Recommended Products Summary
Engineering reference data for STM32L053R8T6 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | STM32L053R8T6TR | STM32L053C8T6 | STM32L052R8T6 | LPC824M201JHI33 | EFM32LG230F64 |
|---|---|---|---|---|---|---|
| Package | LQFP-64 | LQFP-64 | LQFP-48 | LQFP-64 | LQFP-64 | LQFP-64 |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | NXP Semiconductors | Silicon Labs |
| Core | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M3 |
| Max Clock Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 30 MHz | 48 MHz |
| Flash Memory | 64 KB | 64 KB | 64 KB | 64 KB | 32 KB | 64 KB |
| SRAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| Supply Voltage Range | 1.8V to 3.6V | 1.8V to 3.6V | 1.8V to 3.6V | 1.8V to 3.6V | 1.8V to 3.6V | 1.8V to 3.6V |
| Standby Current (with RTC) | 0.29 uA | 0.29 uA | 0.29 uA | 0.29 uA | 0.5 uA | 0.9 uA |
| LCD Driver | Yes (8x28 segments) | Yes (8x28 segments) | Yes (8x28 segments) | No | No | Yes (8x36 segments) |
Key Differentiators
- Ultra-low standby current of 0.29 uA with RTC (vs LPC824M201JHI33)
- Integrated LCD driver supporting up to 8x28 segments (vs STM32L052R8T6)
- 12-bit ADC with hardware oversampling up to 16-bit (vs EFM32LG230F64)
Design Notes
For ultra-low-power operation, use the low-power modes effectively. Configure the RTC and wake-up sources to minimize average current consumption. In Standby mode with RTC, the current is 0.29 uA, but ensure all unused GPIOs are configured as analog inputs or outputs to avoid leakage. Use the low-power timer to schedule periodic wake-ups instead of continuous operation.
Place a 100 nF ceramic capacitor close to each VDD pin and a 1 uF capacitor on the main supply. For the VBAT pin, connect a 100 nF capacitor to ground. Ensure the ground plane is solid and the decoupling capacitors are placed as close as possible to the pins to minimize noise and ensure stable operation.
Do not exceed the absolute maximum ratings, especially the supply voltage (3.6V). Ensure the BOOT0 pin is properly configured to avoid accidental boot mode changes. When using the ADC, calibrate it for accurate readings. For the LCD driver, ensure the contrast voltage is set correctly to avoid display issues.
Compliance Information
RoHS compliant per STMicroelectronics product page. Not AEC-Q100 qualified.
