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STMicroelectronics STM32L EnergyLite™ 32-bit MCUsSTMicroelectronics STM32L EnergyLite™ 32-bit microcontrollers combine unique STMicroelectronics low-leakage 130nm process technology and optimized power-saving architecture to deliver industry-leading energy-saving performance. STM32L ARM Cortex-M3 based MCUs are part of the STMicroelectronics EnergyLite platform of ultra low-power products enabling designers to optimize performance, function, and battery life and meet efficiency-related criteria such as eco-design targets. STM32L MCUs consume only 0.27µA in lowest power mode and 230 µA/MHz in dynamic run mode. The STM32L151 and STM32L152 differ in that the STM32L152 features an LCD controller. These STMicroelectronics STM32L ARM Cortex-M3 MCUs feature 128Kbytes of Flash memory. Features
- Core: ARM 32-bit Cortex™-M3 CPU
- 32 MHz maximum frequency, 33.3 DMIPS peak (Dhrystone 2.1)
- Memory protection unit
- Memory:
- 128 Kbyte of Flash memory with ECC
- 4 Kbyte of data EEPROM with ECC
- Up to 16 Kbyte of RAM
- I/Os:
- Up to 83 fast I/Os (73 of which are 5 V-tolerant) all mappable on 16 external interrupt vectors
- Low power features:
- 4 modes: Sleep, Low-power run (9 μA at 32 kHz), Low-power sleep
(4.9 μA), Stop with RTC (1.2 μA), Stop (570 nA), Standby (300 nA)
- ADC: 12-bit ADC up to 1 Msps/24 channels
- LCD: 8 × 40 or 4 × 44 with step-up converter*
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- Operating conditions:
- Operating power supply range: 1.65 V to 3.6 V (without BOR) or 1.8 V to 3.6 V (with BOR option)
- Temp. range: -40 to 85 °C
* NOTE: Available only on STM32L152
Applications
- Medical equipment
- Handheld equipment
- Application control
- User interface
- PC peripherals
- Gaming
- GPS
- Sport equipment
- Alarm systems
- Wired and wireless sensors
- Video intercom
- Utility metering
| Additional Resources
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STM32L MCUs Block Diagram
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STMicroelectronics STM32L-DISCOVERY
The STMicroelectronics STM32L-DISCOVERY STM32L ultralow power discovery board demonstrates the ultralow power features of STM32L EnergyLite Microcontrollers and lets you develop and share your applications. The STMicroelectronics STM32L-DISCOVERY ultralow power discovery board is based on an STM32L152RBT6 MCU and includes an ST-Link/V2 embedded debugging tool interface, an LCD (24 segments, 4 commons), LEDs, pushbuttons, a linear touch sensor, or touchkeys. The board power supply is through USB bus or an external 3.3 or 5V supply voltage. This STMicroelectronics discovery board also includes two pushbuttons (user and reset) and and one linear touch sensor or four touchkeys. |
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