STM32L053R8T STMicroelectronics Integrated Circuit (Quad Flat Packages) In Stock
STM32L053R8T is an ultra-low-power 32-bit ARM Cortex-M0+ microcontroller with 64 KB Flash, USB, LCD driver, 12-bit ADC, and DAC in a 64-pin QFP package. Achieves 87 µA/MHz run current and 0.4 µA stop mode for energy-harvesting and battery-powered IoT nodes. Available from stock with worldwide shipping.
- Manufacturer
- STMicroelectronics
- Package
- Quad Flat Packages
- Pin Count
- 64
- Lifecycle
- ACTIVE
- Datasheet
- STM32L053R8T Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- ARM Cortex-M0+ core at up to 32 MHz consuming only 87 µA/MHz in Run mode — among the lowest in the 32-bit MCU class
- Integrated LCD driver for up to 8 x 40 or 4 x 44 segment displays enabling standalone e-meter and sensor-display products
- USB 2.0 Full-Speed (12 Mbps) crystal-less operation using internal 48 MHz RC oscillator for USB CDC and HID applications
- 12-bit ADC with 16 channels and on-chip DAC for mixed-signal sensor front-ends without external converter chips
- 0.4 µA stop mode with RTC and 640 byte RAM retention supporting years of coin-cell operation in wireless sensor nodes
Applications
STM32L053R8T is optimized for energy-harvesting IoT sensors, wireless environmental monitors, and smart metering nodes where sub-1 µA standby current is mandatory for multi-year coin-cell battery life. Its integrated LCD controller directly drives segment displays in portable medical devices, utility meters, and wearable fitness trackers without a separate display driver IC. The crystal-less USB Full-Speed interface further simplifies BOM for USB-connected data loggers and configuration dongles running from a 3.3 V or 5 V USB bus.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for STM32L053R8T:
RISC Microcontroller, 32-Bit, FLASH, CORTEX-M0 CPU, 32MHz, CMOS, PQFP64
RISC Microcontroller, 32-Bit, FLASH, CORTEX-M0 CPU, 32MHz, CMOS, PQFP64
RISC Microcontroller, 32-Bit, FLASH, CORTEX-M0 CPU, 32MHz, CMOS, PQFP64
RISC Microcontroller, 32-Bit, FLASH, Cortex-M0+ CPU, 32MHz, CMOS, PQFP64
Frequently Asked Questions
How low is the run-mode current of STM32L053R8T at its maximum clock frequency?
STM32L053R8T consumes approximately 87 µA/MHz in run mode, meaning at its maximum 32 MHz clock it draws about 2.8 mA active current, which translates to months of operation from a 500 mAh coin-cell battery when using 1% duty-cycle wake-up intervals typical of temperature sensor nodes.
What display interface does STM32L053R8T support and how many segments can it drive?
STM32L053R8T integrates an on-chip LCD controller that drives up to 8 x 40 multiplexed segments (or 4 x 44 in alternate configuration), sufficient for a 4-digit numeric plus symbol display used in portable medical glucometers, utility sub-meters, and industrial handheld instruments without any external display driver IC.
Does STM32L053R8T require an external crystal for USB operation?
No, STM32L053R8T supports crystal-less USB 2.0 Full-Speed operation at 12 Mbps by using an internal 48 MHz RC oscillator with automatic clock calibration via USB SOF packets, saving 2 passive components and the PCB area of a crystal and load capacitors in space-constrained USB dongle designs.
What is the stop-mode current of STM32L053R8T, and what functions remain active during stop?
In stop mode STM32L053R8T draws only 0.4 µA with RTC running and 640 bytes of RAM retained, allowing the device to maintain a real-time clock tick every second for scheduled wake-ups while preserving sensor calibration data across sleep intervals spanning minutes to hours in outdoor environmental monitors.
For a wireless sensor node powered by a 3 V coin cell, how does STM32L053R8T compare to STM32L031 for mixed-signal requirements?
STM32L053R8T adds a 12-bit DAC, USB Full-Speed, and LCD controller over STM32L031, making it the better choice when the node must output an analog reference voltage for a MEMS pressure sensor calibration or drive a small segment display locally, while STM32L031 suits pure digital sensor nodes at lower unit cost where ADC resolution below 12-bit is acceptable.
Related Guides
1206 100 uF MLCC Design Guide for Compact Bulk Decoupling
Design guidance for applying CL31A107MQHNNNE and related 1206 MLCCs in compact bulk decoupling networks.
Jul 3, 2026
0402 10 nF MLCC Design Guide for High-Speed Decoupling
Practical design guidance for using CL05B103KB5NNNC and related 0402 MLCCs in high-speed decoupling networks.
Jul 3, 2026
CL31A107MQHNNNE 1206 100 uF MLCC Selection Guide
How to choose CL31A107MQHNNNE and related 1206 MLCCs for low-voltage bulk capacitance and regulator stability.
Jul 2, 2026
CL05B103KB5NNNC 0402 10 nF X7R MLCC Selection Guide
How to choose CL05B103KB5NNNC and related 0402 MLCCs for bypassing, filtering, voltage derating, and sourcing.
Jul 2, 2026
Why Buy from FindMyChip
About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”