STMicroelectronics STM32L162RET6
Ultra-low-power 32-bit MCU ARM®-based Cortex®-M3 with 512KB
Flash, 80KB SRAM, 16KB EEPROM, LCD, USB, ADC, DAC, AES
Features
• Ultra-low-power platform
– 1.65 V to 3.6 V power supply
– -40 °C to 105 °C temperature range
– 290 nA Standby mode (3 wakeup pins)
– 1.11 µA Standby mode + RTC
– 560 nA Stop mode (16 wakeup lines)
– 1.4 µA Stop mode + RTC
– 11 µA Low-power run mode down to 4.6 µA in Low-power sleep mode
– 195 µA/MHz Run mode
– 10 nA ultra-low I/O leakage
– 8 µs wakeup time
• AES 128-bit encryption hardware accelerator
• Core: ARM® Cortex®-M3 32-bit CPU
– From 32 kHz up to 32 MHz max
– 1.25 DMIPS/MHz (Dhrystone 2.1)
– Memory protection unit
• Up to 34 capacitive sensing channels
• CRC calculation unit, 96-bit unique ID
• Reset and supply management
– Low-power, ultrasafe BOR (brownout reset) with 5 selectable thresholds
– Ultra-low-power POR/PDR
– Programmable voltage detector (PVD)
• Clock sources
– 1 to 24 MHz crystal oscillator
– 32 kHz oscillator for RTC with calibration
– Internal 16 MHz oscillator factory trimmed RC(+/-1%) with PLL option
– Internal low-power 37 kHz oscillator
– Internal multispeed low-power 65 kHz to 4.2 MHz oscillator
– PLL for CPU clock and USB (48 MHz)
• Pre-programmed bootloader
– USB and USART supported
• Up to 116 fast I/Os (102 I/Os 5V tolerant), all mappable on 16 external interrupt vectors
• Memories
– 512 Kbytes of Flash memory with ECC (with 2 banks of 256 Kbytes enabling RWW capability)
– 80 Kbytes of RAM
– 16 Kbytes of true EEPROM with ECC
– 128-byte backup register
• LCD driver up to 8x40 segments, contrast adjustment, blinking mode, step-up converter
• Rich analog peripherals (down to 1.8 V)
– 2x operational amplifiers
– 12-bit ADC 1 Msps up to 40 channels
– 12-bit DAC 2 ch with output buffers
– 2x ultra-low-power comparators (window mode and wake up capability)
• DMA controller 12x channels
• 11x peripheral communication interfaces
– 1x USB 2.0 (internal 48 MHz PLL)
– 5x USARTs
– Up to 8x SPIs (2x I2S, 3x 16 Mbit/s)
– 2x I2Cs (SMBus/PMBus)
• 11x timers: 1x 32-bit, 6x 16-bit with up to 4 IC/OC/PWM channels, 2x 16-bit basic timers, 2x watchdog timers (independent and window)
• Development support: serial wire debug, JTAG and trace
STM32L162RET6:
Energy-efficient and feature-rich microcontrollers for low-power embedded systems
The STM32L162RET6 is a high-performance microcontroller unit (MCU) developed by STMicroelectronics. Designed for low-power embedded systems, this microcontroller offers an excellent combination of performance, energy efficiency, and extensive integrated features.
Key Features and Specifications:
The STM32L162RET6 microcontroller integrates several key features that make it ideal for low-power embedded systems:
1. Arm Cortex-M3 core: The MCU is based on the Arm Cortex-M3 32-bit processor core, which provides a balance between processing power and energy efficiency for low-power applications.
2. Flash and RAM: The microcontroller provides a large amount of flash memory for program storage and ample RAM for data storage, enabling complex applications with large memory requirements.
3. Low-power operation: STM32L162RET6 has advanced low-power modes, such as sleep, stop and standby, allowing the MCU to run at very low power consumption levels during idle or low activity periods, extending battery life when energy is constrained application.
4. Rich set of peripherals: the microcontroller integrates rich peripherals, including multiple UARTs, SPI, I2C interfaces, analog-to-digital converters (ADCs), timers, and GPIOs, enabling communication with various external devices and sensors seamless connection.
5. Advanced security features: STM32L162RET6 integrates powerful security features, including hardware encryption/decryption, secure boot, and tamper detection, ensuring protection of sensitive data and preventing unauthorized access.
application:
The STM32L162RET6 microcontrollers are suitable for a wide range of low-power embedded system applications, including:
1. Internet of Things (IoT) devices: MCUs are ideal for battery-powered IoT devices, such as smart sensors, wearables, and asset tracking devices, providing efficient data processing, connectivity, and sensor interface functions.
2. Portable medical devices: Microcontrollers can be used in portable medical devices, including patient monitors, blood glucose meters, and wearable health trackers, providing low-power operation, data processing, and secure communication for remote patient monitoring and healthcare applications.
3. Intelligent energy management: STM32L162RET6 can be used in intelligent energy management systems, including smart meters, energy monitoring equipment and home automation systems, to achieve real-time energy monitoring, control and data communication, and to achieve efficient energy consumption.
4. Industrial monitoring: MCU is suitable for industrial monitoring applications such as building automation, environmental monitoring and process control systems, providing reliable and energy-saving control, data acquisition and communication capabilities.
5. Wireless sensor networks: Microcontrollers can be used in wireless sensor networks, including environmental monitoring, asset tracking, and agricultural applications, providing low-power wireless communication, sensor integration, and data processing capabilities.
Application Example: Smart Home Energy Monitor
A typical use case for the STM32L162RET6 microcontroller is a smart home energy monitor. In this case, microcontrollers can be interfaced with energy sensors, wireless communication modules, and display units to create real-time energy monitoring and management systems. It can collect energy consumption data, calculate energy usage statistics, and provide homeowners with visual feedback on energy consumption patterns. The microcontroller's low-power operation and advanced security features ensure efficient and safe energy monitoring in smart home environments.
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