STMicroelectronics

STM32L021D4P7TR  

Microcontrollers

The STM32L021D4P7TR is a low-power microcontroller from STMicroelectronics, designed for a wide range of applications that require low power consumption and high performance. This microcontroller is based on the high-performance ARM Cortex-M0+ core, which operates at a clock speed of up to 32 MHz.

Description:

The STM32L021D4P7TR is a 32-bit microcontroller that belongs to the STM32L0 series, which is known for its ultra-low power consumption and high performance. This particular model comes in a compact 28-pin package, making it suitable for a variety of applications where space is limited.

Features:

1. ARM Cortex-M0+ core: The STM32L021D4P7TR features a 32-bit ARM Cortex-M0+ core that operates at a clock speed of up to 32 MHz, providing high performance for a wide range of applications.
2. Low power consumption: The STM32L0 series is designed for ultra-low power consumption, making it ideal for battery-powered devices and other applications where power efficiency is critical.
3. Memory: The STM32L021D4P7TR comes with 256 KB of Flash memory and 32 KB of RAM, providing ample storage for code and data.
4. GPIOs: This microcontroller features a range of general-purpose input/output (GPIO) pins, which can be configured for various functions such as digital input/output, analog input, and communication interfaces.
5. Communication interfaces: The STM32L021D4P7TR includes a range of communication interfaces, including I2C, SPI, and USART, allowing it to communicate with various peripherals and other devices.
6. ADC: The microcontroller features an 8-channel 12-bit analog-to-digital converter (ADC) for converting analog signals into digital values.
7. RTC: The real-time clock (RTC) allows the microcontroller to keep track of time and date, even when the device is powered off.
8. Low-voltage detection: The STM32L021D4P7TR includes a power voltage detector that can monitor the supply voltage and take appropriate actions if the voltage drops below a certain threshold.

Applications:

The STM32L021D4P7TR is suitable for a wide range of applications, particularly those that require low power consumption and high performance. Some examples of applications where this microcontroller can be used include:

1. Battery-powered devices: Due to its ultra-low power consumption, the STM32L021D4P7TR is ideal for use in battery-powered devices such as portable electronics, wearable devices, and remote sensors.
2. IoT devices: The microcontroller's communication interfaces and low power consumption make it suitable for Internet of Things (IoT) devices, such as smart home appliances, environmental monitoring systems, and industrial automation.
3. Medical devices: The STM32L021D4P7TR can be used in low-power medical devices, such as portable monitoring equipment, wearable health monitors, and drug delivery systems.
4. Industrial control: The microcontroller's performance and communication interfaces make it suitable for use in industrial control applications, such as motor control, sensor interfacing, and process automation.
5. Consumer electronics: The STM32L021D4P7TR can be used in various consumer electronics applications, such as smart appliances, portable gaming devices, and multimedia players.

STM32L021D4P7TR Documents

Download datasheets and manufacturer documentation for STM32L021D4P7TR

Datasheets :

STM32L021x4      

Design Resources :

Low Power Modes for STM32L0      

HTML Datasheet :

STM32L021x4