STM32L Ultra-Low-Power Arm Cortex-M MCU Variants
STMicroelectronics STM32L devices are ultra-low-power Arm Cortex-M microcontrollers for battery-operated, metering, sensing, wearable, and low-energy industrial products.
Low-power STM32 platform for energy-constrained embedded designs
Compare STM32L variants by Cortex-M core, Flash size, package, supply range, analog features, and standby current targets.
The STM32L family from STMicroelectronics is the low-power branch of the STM32 Arm Cortex-M ecosystem. It includes value-line Cortex-M0+ devices, mainstream ultra-low-power controllers, and richer variants with larger memory, advanced analog blocks, LCD support, USB, and security features depending on the subfamily. STM32L is commonly chosen when battery life, sleep current, wake-up latency, and energy per task are central design constraints.
Applications include utility metering, wireless sensors, wearables, portable medical devices, data loggers, asset trackers, and industrial modules that spend long periods in standby. Package options range from small UFQFN and WLCSP devices to 48-, 64-, 100-, and 132-pin LQFP or BGA packages. Selection should compare core generation, Flash/RAM, ADC and op-amp resources, LCD driver availability, radio companion needs, low-power modes, wake sources, and package pinout.
Key Features
- Low-power STM32 platform with mature tools and middleware
- Wide memory and package range for scalable products
- Analog, LCD, USB, and security options on selected subfamilies
- Well suited to sleep-heavy firmware architectures
- Useful for long-life battery products and low-energy industrial nodes
Target Applications
- Smart meters and utility monitors
- Battery-powered sensor nodes
- Wearables and portable medical devices
- Asset trackers and data loggers
- Low-power industrial control modules
Ordering Variants
Compare 197 STM32L part numbers by package, electrical parameters, lifecycle, and availability. Use RFQ for stock and lead-time confirmation.
| Part Number | Description | Package Type | Manufacturer | Lifecycle | RoHS | Availability | Action |
|---|---|---|---|---|---|---|---|
| STM32L010C6T6 | 32-bit ARM Cortex-M0+ MCU, 32MHz, 38 I/O, 32KB Flash, 48-Pin QFP | - | STMicroelectronics | Active | Compliant | In Stock | |
| STM32L010F4P6 | Ultra-low-power value line Arm Cortex-M0+ MCU with 16-Kbytes of of Flash memory memory and 32 MHz CPU | - | STMicroelectronics | Active | Compliant | In Stock | |
| STM32L010F4P6TR | Ultra-low-power value line Arm Cortex-M0+ MCU with 16-Kbytes of of Flash memory memory and 32 MHz CPU | - | STMicroelectronics | Active | Compliant | In Stock | |
| STM32L010R8T6 | Ultra-low-power value line Arm Cortex-M0+ MCU with 64-Kbytes of Flash memory, 32 MHz CPU | - | STMicroelectronics | Active | Compliant | In Stock | |
| STM32L010RBT6 | 32-bit ARM Cortex-M0+ MCU, 128KB Flash, 32MHz, 51 I/O, 64-pin QFP | - | STMicroelectronics | Active | Compliant | In Stock | |
| STM32L011D3P6TR | Ultra-low-power ARM Cortex-M0+ MCU with 8-Kbytes Flash, 32 MHz CPU | - | STMicroelectronics | Active | Compliant | In Stock | |
| STM32L011D4P6 | Ultra-low-power ARM Cortex-M0+ MCU with 16-Kbytes Flash, 32 MHz CPU | - | STMicroelectronics | Active | Compliant | In Stock | |
| STM32L011E4Y6TR | 32-bit ARM Cortex-M0+ MCU, 32MHz, 16KB Flash, 21 I/O, ADC, DMA | - | STMicroelectronics | Active | Compliant | In Stock | |
| STM32L011F3P6 | Ultra-low-power ARM Cortex-M0+ MCU with 8-Kbytes Flash, 32 MHz CPU | - | STMicroelectronics | Active | Compliant | In Stock | |
| STM32L011F4P6TR | Ultra-low-power Arm Cortex-M0+ MCU with 16-Kbytes Flash, 32 MHz CPU | - | STMicroelectronics | Active | Compliant | In Stock | |
| STM32L011F4U6TR | 32-bit Arm Cortex-M0+ MCU, 16KB Flash, 32MHz, 16 I/O, ADC, DMA, PWM | - | STMicroelectronics | Active | Compliant | In Stock | |
| STM32L011G4U6 | Ultra-low-power ARM Cortex-M0+ MCU with 16-Kbytes Flash, 32 MHz CPU | - | STMicroelectronics | Active | Compliant | In Stock | |
| STM32L011K4T6 | Ultra-low-power Arm Cortex-M0+ MCU with 16-Kbytes of Flash memory, 32 MHz CPU | - | STMicroelectronics | Active | Compliant | In Stock | |
| STM32L011K4U3TR | Ultra-low-power Arm Cortex-M0+ MCU with 16-Kbytes of Flash memory, 32 MHz CPU | - | STMicroelectronics | Active | Compliant | In Stock | |
| STM32L011K4U6 | Ultra-low-power Arm Cortex-M0+ MCU with 16-Kbytes of Flash memory, 32 MHz CPU | - | STMicroelectronics | Active | Compliant | In Stock | |
| STM32L031C6U6 | Ultra-low-power Arm Cortex-M0+ MCU with 32-Kbytes of Flash memory, 32 MHz CPU | - | STMicroelectronics | Active | Compliant | In Stock | |
| STM32L031F6P6 | 32-bit ARM Cortex-M0+ MCU, 32KB Flash, 25MHz, 15 I/O, 20-pin SOIC | - | STMicroelectronics | Active | Compliant | In Stock | |
| STM32L031F6P7 | 32-bit ARM Cortex-M0+ MCU, 32KB Flash, 20-pin SOIC, Industrial | - | STMicroelectronics | Active | Compliant | In Stock | |
| STM32L031F6P7TR | 32-bit ARM Cortex-M0+ MCU, 32KB Flash, 20-pin SOIC, 3.3V, Industrial | - | STMicroelectronics | Active | Compliant | In Stock | |
| STM32L031G6U3TR | Ultra-low-power Arm Cortex-M0+ MCU with 32-Kbytes of Flash memory, 32 MHz CPU | - | STMicroelectronics | Active | Compliant | In Stock |
Ordering Code Differences
How suffixes on STM32L map to package, grade, and reel options.
[{"code":"STM32L0","meaning":"Value-line ultra-low-power Cortex-M0+ devices for compact sensing and control."},{"code":"STM32L1 / L4 / L5","meaning":"Different low-power generations with distinct cores, memory, analog resources, and security features."},{"code":"STM32L4+","meaning":"Higher-performance low-power variants for richer interfaces or graphics-supporting products."},{"code":"Package and memory letters","meaning":"ST ordering codes encode memory size, package, temperature, and packing; verify the full MPN."}]
How to Choose the Right STM32L Microcontrollers
Design around sleep states
Battery life depends on chosen low-power mode, wake source, clock tree, retained RAM, and peripheral leakage.
Match analog resources
ADC speed, internal references, op-amps, comparators, and LCD drivers vary by STM32L subfamily.
Check ecosystem needs
Middleware, bootloader, security, USB, and wireless stacks can drive Flash and RAM requirements.
Technical Specifications
Core parameters for STM32L product family
Source STM32L with Octatronics
Request stock confirmation, lead time, date code, and pricing for all 197 ordering variants from STMicroelectronics. Our team supports active, EOL, and hard-to-find component sourcing.
- Original manufacturer parts with traceability options
- BOM upload and multi-line RFQ support
- Package, grade, and compliance verification
Frequently Asked Questions
Common technical questions about the STM32L product family.