STM32L053R8T6 - Ultra-Low-Power ARM Cortex-M0+ MCU | STMicroelectronics
MPN: STM32L053R8T6 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.42 | $3.42 |
| 10 | $3.08 | $30.80 |
| 100 | $2.74 | $274.00 |
| 500 | $2.46 | $1,230.00 |
| 1,000 | $2.19 | $2,190.00 |
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)
STM32L052R8T6
β Drop-Inπ Reference alternative (not in catalog)
STM32L062R8T6
β Drop-Inπ Reference alternative (not in catalog)
STM32L053R6T6
β Drop-Inπ Reference alternative (not in catalog)
STM32L053R8T6 Maximum Ratings & Electrical Characteristics
| Core | ARM Cortex-M0+ |
| Max Clock Frequency | 32 MHz |
| Flash Memory | 64 KB |
| SRAM | 8 KB |
| Supply Voltage Range | 1.8 V to 3.6 V |
| Package | LQFP-64 (10x10 mm) |
| Operating Temperature Range | -40C to +85C |
| ADC Resolution | 12-bit (with hardware oversampling up to 16-bit) |
| DAC Resolution | 12-bit |
| Number of GPIOs | 51 |
| Communication Interfaces | I2C, SPI, USART, USB 2.0 FS |
| LCD Driver | 8x28 segments |
| Low-Power Modes | Sleep, Low-power run, Low-power sleep, Stop, Standby |
| Standby Current (with RTC) | 0.29 uA |
| Dynamic Run Current | 84 uA/MHz |
| RoHS Status | Compliant |
STM32L053R8T6 Pin Configuration
| Pin 1 | VBAT β Backup battery supply for RTC and backup registers |
| Pin 2 | PC13 β GPIO or RTC tamper/calendar output |
| Pin 3 | PC14 β GPIO or OSC32_IN |
| Pin 4 | PC15 β GPIO or OSC32_OUT |
| Pin 5 | PF0 β GPIO or OSC_IN |
| Pin 6 | PF1 β GPIO or OSC_OUT |
| Pin 7 | NRST β Reset (active low) |
| Pin 8 | VDD β Digital power supply |
| Pin 9 | VSS β Ground |
| Pin 10 | PA0 β GPIO, ADC, DAC, or comparator input |
| Pin 11 | PA1 β GPIO, ADC, or comparator input |
| Pin 12 | PA2 β GPIO, ADC, or USART2_TX |
| Pin 13 | PA3 β GPIO, ADC, or USART2_RX |
| Pin 14 | PA4 β GPIO, ADC, or DAC_OUT |
| Pin 15 | PA5 β GPIO, ADC, or SPI1_SCK |
| Pin 16 | PA6 β GPIO, ADC, or SPI1_MISO |
| Pin 17 | PA7 β GPIO, ADC, or SPI1_MOSI |
| Pin 18 | PB0 β GPIO, ADC, or comparator input |
| Pin 19 | PB1 β GPIO, ADC, or comparator input |
| Pin 20 | PB2 β GPIO or BOOT1 |
| Pin 21 | PB10 β GPIO, I2C2_SCL, or USART3_TX |
| Pin 22 | PB11 β GPIO, I2C2_SDA, or USART3_RX |
| Pin 23 | PB12 β GPIO, SPI2_NSS, or I2C2_SMBA |
| Pin 24 | PB13 β GPIO, SPI2_SCK, or USART3_CTS |
| Pin 25 | PB14 β GPIO, SPI2_MISO, or USART3_RTS |
| Pin 26 | PB15 β GPIO, SPI2_MOSI, or USART3_CK |
| Pin 27 | PC6 β GPIO, USART6_TX, or TIM3_CH1 |
| Pin 28 | PC7 β GPIO, USART6_RX, or TIM3_CH2 |
| Pin 29 | PC8 β GPIO, USART6_CK, or TIM3_CH3 |
| Pin 30 | PC9 β GPIO, USART6_RTS, or TIM3_CH4 |
| Pin 31 | PD2 β GPIO, USART5_TX, or TIM3_ETR |
| Pin 32 | VDD β Digital power supply |
| Pin 33 | VSS β Ground |
| Pin 34 | PA8 β GPIO, USB_DP, or MCO |
| Pin 35 | PA9 β GPIO, USB_DM, or USART1_TX |
| Pin 36 | PA10 β GPIO, USART1_RX, or TIM2_CH1 |
| Pin 37 | PA11 β GPIO, USART1_CTS, or TIM2_CH2 |
| Pin 38 | PA12 β GPIO, USART1_RTS, or TIM2_CH3 |
| Pin 39 | PA13 β GPIO, SWDIO, or TIM2_CH4 |
| Pin 40 | PA14 β GPIO, SWCLK, or USART1_CK |
| Pin 41 | PA15 β GPIO, SPI1_NSS, or TIM2_ETR |
| Pin 42 | PB3 β GPIO, SPI1_SCK, or TIM2_CH1 |
| Pin 43 | PB4 β GPIO, SPI1_MISO, or TIM3_CH1 |
| Pin 44 | PB5 β GPIO, SPI1_MOSI, or I2C1_SMBA |
| Pin 45 | PB6 β GPIO, I2C1_SCL, or USART1_TX |
| Pin 46 | PB7 β GPIO, I2C1_SDA, or USART1_RX |
| Pin 47 | PB8 β GPIO, I2C1_SCL, or TIM16_CH1 |
| Pin 48 | PB9 β GPIO, I2C1_SDA, or TIM17_CH1 |
| Pin 49 | VDD β Digital power supply |
| Pin 50 | VSS β Ground |
| Pin 51 | PC0 β GPIO, ADC, or comparator input |
| Pin 52 | PC1 β GPIO, ADC, or comparator input |
| Pin 53 | PC2 β GPIO, ADC, or comparator input |
| Pin 54 | PC3 β GPIO, ADC, or comparator input |
| Pin 55 | PC4 β GPIO, ADC, or comparator input |
| Pin 56 | PC5 β GPIO, ADC, or comparator input |
| Pin 57 | PD0 β GPIO, OSC_IN, or USART2_CK |
| Pin 58 | PD1 β GPIO, OSC_OUT, or USART2_RTS |
| Pin 59 | PD3 β GPIO, USART2_CTS, or SPI1_MISO |
| Pin 60 | PD4 β GPIO, USART2_RX, or SPI1_MOSI |
| Pin 61 | PD5 β GPIO, USART2_TX, or SPI1_SCK |
| Pin 62 | PD6 β GPIO, USART2_RX, or SPI1_NSS |
| Pin 63 | PD7 β GPIO, USART2_TX, or SPI1_MISO |
| Pin 64 | VDD β Digital 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, Smart Sensors and IoT Nodes, Wearable Electronics, Smart Metering, Industrial Control and Monitoring, Consumer Electronics.
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 modes, including a standby current of 0.29 uA, extend battery life significantly. The integrated 12-bit ADC with hardware oversampling enables precise sensor readings, while the LCD driver can directly interface with small displays for patient data. The device operates from 1.8V to 3.6V, allowing direct battery connection. In a typical glucose meter, the MCU wakes periodically to read the sensor, process the data, and display the result, then returns to sleep, consuming minimal power. The 64 KB Flash provides ample space for firmware and calibration data. The RTC ensures accurate time-stamping of measurements. Compared to higher-power MCUs, the STM32L053R8T6 reduces average current draw, enabling months of operation on a single coin cell battery.
Recommended
Smart Sensors and IoT Nodes
The STM32L053R8T6 is well-suited for smart sensors and IoT nodes that require low power consumption and wireless connectivity. Its multiple low-power modes allow the device to sleep for extended periods and wake on external events or RTC alarms. The integrated USB 2.0 FS controller enables direct connection to a host for configuration or data transfer. Communication interfaces like I2C, SPI, and USART allow interfacing with various sensors (temperature, humidity, motion) and radios (LoRa, BLE). In a typical IoT node, the MCU collects sensor data, processes it, and transmits it via a radio module, then returns to sleep. The 84 uA/MHz dynamic current ensures efficient processing. The device's wide supply voltage range accommodates battery voltage drops over time. The 64 KB Flash is sufficient for communication protocols and sensor drivers. The RNG can be used for secure communication key generation. Compared to other MCUs, the STM32L053R8T6 offers a good balance of peripherals and power efficiency, making it a popular choice for battery-powered IoT applications.
Recommended
Wearable Electronics
The STM32L053R8T6 is perfect for wearable electronics like fitness trackers, smartwatches, and smart clothing. Its ultra-low-power consumption is critical for devices that are worn continuously and need to last days or weeks on a small battery. The device's small LQFP-64 package (10x10 mm) fits compact PCB designs. The integrated LCD driver can control segmented displays for time, steps, or notifications. The ADC and comparators can interface with accelerometers and heart-rate sensors. In a fitness tracker, the MCU samples the accelerometer at a low rate, processes step counting, and updates the display, then sleeps. The standby current of 0.29 uA ensures minimal battery drain during inactivity. The device supports a wide voltage range, allowing direct connection to a lithium-polymer battery. The 64 KB Flash is sufficient for firmware and user data. Compared to other MCUs, the STM32L053R8T6 offers a unique combination of low power, integrated LCD driver, and small footprint, making it an excellent choice for wearables.
Recommended
Smart Metering
The STM32L053R8T6 is used in smart metering applications such as electricity, water, and gas meters. These devices require long-term reliability, low power consumption, and accurate measurement. The MCU's 12-bit ADC with hardware oversampling can achieve high-resolution measurements of current and voltage. The RTC provides accurate time-stamping for usage data. The device's low-power modes allow it to operate on battery power for years. In a smart electricity meter, the MCU reads the ADC at regular intervals, calculates energy consumption, and stores data in Flash. It can communicate via USART or I2C to a communication module for remote reading. The 64 KB Flash is sufficient for metering algorithms and data logging. The device operates from 1.8V to 3.6V, compatible with battery-backed power supplies. Compared to other MCUs, the STM32L053R8T6 offers a good balance of performance, low power, and integrated peripherals, making it a cost-effective solution for smart metering.
Recommended
Industrial Control and Monitoring
The STM32L053R8T6 is suitable for industrial control and monitoring applications that require low power and robustness. Its wide operating temperature range (-40C to +85C) and multiple communication interfaces make it ideal for remote sensors, process controllers, and data loggers. The device's 12-bit ADC can interface with various industrial sensors (temperature, pressure, flow). The USART and SPI interfaces allow connection to industrial networks like RS-485 or Modbus. In a typical industrial monitoring system, the MCU reads sensor data, processes it, and sends it to a central controller via a wired or wireless link. The low-power modes enable battery-powered operation in remote locations. The 64 KB Flash is sufficient for control algorithms and communication protocols. The device's robust design and wide voltage range make it suitable for harsh environments. Compared to other MCUs, the STM32L053R8T6 offers a good combination of low power, integrated peripherals, and industrial-grade reliability.
Recommended
Consumer Electronics
The STM32L053R8T6 is used in various consumer electronics such as remote controls, smart home devices, and small appliances. Its low power consumption and integrated peripherals make it ideal for battery-operated devices. The LCD driver can control displays in remote controls or thermostats. The USB controller enables charging and data transfer in devices like smart watches. In a smart home device, the MCU can interface with sensors and actuators, and communicate via I2C or SPI to a Wi-Fi or BLE module. The device's low-power modes allow it to run on batteries for extended periods. The 64 KB Flash is sufficient for firmware and user settings. The device's small package and wide voltage range make it easy to integrate into compact designs. Compared to other MCUs, the STM32L053R8T6 offers a good balance of features and cost, making it a popular choice for consumer electronics.
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 | STM32L052R8T6 | STM32L062R8T6 | STM32L053R6T6 |
|---|---|---|---|---|---|
| Package | LQFP-64 | LQFP-64 - same | LQFP-64 - same | LQFP-64 - same | LQFP-64 - same |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Core | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ |
| Max Clock Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Flash Memory | 64 KB | 64 KB | 64 KB | 64 KB | 32 KB |
| SRAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| DAC | Yes (12-bit) | Yes (12-bit) | No | Yes (12-bit) | Yes (12-bit) |
| LCD Driver | Yes (8x28) | Yes (8x28) | No | Yes (8x28) | Yes (8x28) |
| Standby Current (with RTC) | 0.29 uA | 0.29 uA | 0.29 uA | 0.29 uA | 0.29 uA |
Key Differentiators
- Integrated 12-bit DAC (vs STM32L052R8T6)
- Integrated LCD driver (vs STM32L052R8T6)
- True random number generator (RNG) (vs STM32L052R8T6)
Design Notes
For ultra-low-power operation, use the low-power modes effectively. Configure the RTC to wake the device periodically and use external interrupts for event-driven wakeups. In Standby mode, the current is 0.29 uA with RTC running. Ensure that all unused GPIOs are configured as analog inputs or outputs to avoid floating inputs that can increase leakage current. Use the PWR library to manage voltage scaling and low-power modes.
Place a 100 nF decoupling capacitor close to each VDD pin and a 1 uF capacitor on the main supply. For the VDDA pin, use a 1 uF capacitor and a 10 nF capacitor in parallel. Ensure a solid ground plane to minimize noise. For the USB interface, place 22 ohm series resistors on the DP and DM lines and a 1.5 kohm pull-up on DP. Follow the layout guidelines in the STM32L0 hardware development application note (AN2606).
Do not exceed the absolute maximum ratings: VDD max is 3.6V, and any pin voltage must be between VSS-0.3V and VDD+0.3V. When using the ADC, ensure the sampling time is sufficient for the source impedance. For the LCD driver, configure the contrast and bias correctly to avoid display issues. Also, be aware that the STM32L053R8T6 does not have a true EEPROM; use the Flash memory with wear-leveling if frequent writes are needed.
Compliance Information
RoHS compliant per ST product page. Not AEC-Q100 qualified. REACH compliance is assumed based on ST's general compliance, but not explicitly stated in the provided data.