STM32L072RZT6

series introduction

# Introduction to the STM32L072RZT6 Product Series

## 1. Overview
The STM32L072RZT6 belongs to the STM32L0 series of microcontrollers developed by STMicroelectronics. This series is specifically designed for applications that demand ultra - low power consumption without sacrificing performance. The STM32L072RZT6, in particular, offers a rich set of features and capabilities, making it suitable for a wide range of embedded systems, including smart meters, wearables, home automation, and industrial sensors.

## 2. Core and Architecture
### 2.1 ARM Cortex - M0+ Core
The STM32L072RZT6 is powered by the ARM Cortex - M0+ core, which is known for its high - performance and energy - efficient design. The Cortex - M0+ core operates at a maximum frequency of 32 MHz, providing sufficient processing power for most embedded applications. It features a Harvard architecture with separate instruction and data buses, enabling concurrent access to instructions and data, which significantly improves the overall performance of the microcontroller.

### 2.2 Memory Organization
- **Flash Memory**: It comes with 192 KB of embedded Flash memory. This non - volatile memory is used to store the program code of the application. The Flash memory has a high endurance, allowing for frequent programming and erasing cycles, which is essential for applications that require software updates.
- **SRAM**: The microcontroller is equipped with 20 KB of SRAM. SRAM is used for storing variables, data buffers, and the stack during program execution. The relatively large SRAM size provides enough space for complex algorithms and data handling.

## 3. Low - Power Features
### 3.1 Multiple Power Modes
- **Run Mode**: In run mode, the microcontroller operates at full speed, consuming power based on the clock frequency and the peripherals in use. However, the STM32L072RZT6 is designed to minimize power consumption even in this mode through features such as dynamic voltage scaling.
- **Sleep Mode**: In sleep mode, the CPU is stopped, but the peripherals and the SRAM remain powered. This mode allows for quick wake - up times, making it suitable for applications that need to respond rapidly to external events. Power consumption in sleep mode is significantly lower than in run mode.
- **Stop Mode**: Stop mode further reduces power consumption by shutting down the main voltage regulator and the CPU clock. Only the real - time clock (RTC) and some low - power peripherals remain active. The microcontroller can be woken up from stop mode using external interrupts or internal events.
- **Standby Mode**: Standby mode is the lowest power mode available. In this mode, most of the internal circuits are powered off, and only the RTC and a few wake - up sources are active. The power consumption in standby mode is extremely low, making it ideal for battery - powered applications where long - term operation is required.

### 3.2 Ultra - Low - Power Peripherals
The STM32L072RZT6 includes several ultra - low - power peripherals, such as the low - power timer (LPTIM), which can operate in low - power modes and consume very little energy. The analog - to - digital converter (ADC) also has a low - power mode, allowing for energy - efficient data acquisition.

## 4. Peripherals
### 4.1 Communication Interfaces
- **UART/USART**: It supports multiple Universal Asynchronous Receiver/Transmitter (UART) and Universal Synchronous/Asynchronous Receiver/Transmitter (USART) interfaces. These interfaces are commonly used for serial

Images for reference

Image Preview

Partlist