STM32L151C6T6ATR

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STM32L151C6T6ATR microcontroller is a low-power and wide-temperature-range device of the STM32 Family, allowing operation between -40°C and +85°C. This device is well-suited for portable and battery-operated applications that need highly integrated solutions and low power consumption.

Application Field

The STM32L151C6T6ATR microcontroller is ideal for applications requiring low-power and low-voltage operation, including portable medical devices, consumer applications (custom remote controls, games, medical instruments, and communication interface), industrial automation, and security systems.

The microcontroller supports a wide range of communication protocols, like CAN, USB, SPI, and I2C. It features a 3-in-1 converter for handling multiple protocols and is also equipped with a patented Time-Triggered Protocol for CAN that ensures reliable performance in automotive applications.

The STM32L151C6T6ATR includes a wide set of peripherals, such as a temperature sensor, multiple Timers, RTC, CRC, AES, DES, and an ADCs, allowing it to interface with a variety of sensors and other peripherals.

Working Principle

The STM32L151C6T6ATR microcontroller can be configured to operate in two main power modes: Run and Sleep. When the device is in Run mode, it is in active state and can process instructions and access system peripherals. In Sleep mode, the peripheral functions and clocks are off, current consumption is reduced, and the device can still be woken up by an interrupt. This device integrates user-defined wakeup functions, allowing the system to be woken up when an event is triggered. Moreover, the microcontroller synchronizes Real-Time Clock (RTC) with the system RTC, using a Wake-Up Unit. In addition, the device supports low-power modes, such as Stop and Standby, that further reduce the current consumption and allow the system to remain in sleep mode indefinitely.

The STM32L151C6T6ATR microcontroller also supports an Auto Low-Power (ALP) mode with low-power CPU design. This low-power mode is especially useful for battery-operated applications, where power saving is essential. In this mode, the CPU automatically switches between active and active-low modes at predetermined intervals to reduce power consumption when needed. Additionally, the LP oscillator enables slow clock speed and lower current consumption for low-power applications.

Finally, the STM32L151C6T6ATR microcontroller includes a Ricoh RC5T639 power management unit (PMU) to further reduce the power consumption of the system. This PMU features voltage scaling, dynamic voltage and frequency scaling, clock gating, and dynamic power switching. It allows the system to remain in active mode while the power consumption is minimized by reducing the voltage when the system is idle.

Overall, the STM32L151C6T6ATR microcontroller is an ideal solution for applications requiring low-power and low-voltage operation. It has a wide range of peripherals and a variety of power management options, allowing it to remain operational while consuming less power.

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