ST Manuals

This application note presents the clock system configuration tool for the STM32F2xx microcontroller family. The purpose of this tool is to help the user configure the microcontroller clocks, taking into consideration product parameters such as power supply and Flash access mode. The configuration tool supports various functionalities including system clock configuration, HCLK source and output frequency configuration, Flash latency configuration, setting of various frequencies such as PCLK1, PCLK2, TIMCLK (timer clocks), USBCLK, and I2SCLK, and generation of a ready-to-use system_stm32F2xx.c file. It is important to read the STM32F2xx microcontroller reference manual before using the clock tool. This tool supports only revision B and revision Y of the STM32F2xx.

This application note presents a demonstration package built on top of a free SSL/TLS library: the PolarSSL library. The demonstration package is designed for STM32F217xx microcontrollers.

This document describes six application cases of the two analog comparators embedded in the ultra low power STM32L1 product line. The application cases include: analog voltage monitoring, analog watchdog during Stop mode, pulse width measurement, pulse width modulation (PWM) signal control, capacitance measurement, and brightness control using a light dependent resistor (LDR). These application cases demonstrate the usefulness of analog comparators and show how they are integrated with other peripherals, such as the digital-to-analog converter (DAC) and timers.

This application note describes a method to calibrate the STM8A/S high-speed internal (HSI) oscillator using the LIN automatic resynchronization feature of the LINUART/UART1 peripheral.

AN3270 STM8L16x AES hardware accelerator application note describes how to use STM8L16x's AES hardware accelerator and provides some implementations of common AES chaining modes.

This application note provides a generic solution for implementing an IR receiver in software using a STM32F10xxx microcontroller.

This document provides guidelines for obtaining IEC60335 Class B certification in an STM8 application. The software packages are divided into STM8S and STM8L families, with the main differences being the hardware architecture. The document also mentions the use of ST firmware libraries.

This application note aims at describing the key low power features of the STM32L15x family and explains their benefits for applications where energy consumption is a major concern.

This application note introduces the application of microstepping motor drive with STM8A and STM8S microcontrollers. It describes the characteristics and applications of stepper motors, as well as methods to increase the resolution of stepper motor drives. It also mentions the availability of dedicated stepper motor controllers/ICs on the market and the demand for stepper motors with a lower current rating in applications such as automotive dashboards.

This document is intended for system designers who require a hardware implementation overview of the development board features such as the power supply, the clock management, the reset control, the boot mode settings and the debug management. It shows how to use STM32L1xxx product families and describes the minimum hardware resources required to develop an STM32L1xxx application. Detailed reference design schematics are also contained in this document with descriptions of the main components, interfaces and modes.

This application note describes a simple and easy-to-use solution to help design and develop products with an audio output, for example, toys, alarms, door bells, and white goods. Audio data generally require the storage of a lot of memory. However, the memory space needed to preserve such data can be reduced by compressing the audio data via a specified compression method. Processing these data is usually a complex task requiring powerful microcontrollers such as DSP or audio chip. Normally, 8-bit microcontrolles do not offer either a large memory or a high computing performance. The software solution offered in this application note reconstructs audio signals from compressed samples. A simple audio codec based on an adaptive differential pulse coded modulation (ADPCM) algorithm is used and advantage is taken of the advanced STM8L core with its 3-staged pipeline and 16 MIPS peak performance. The digital samples are converted to an analog signal by an on-chip, 12-bit, digital-to-analog converter (DAC). This offers good overall audio quality, yet is a cost-effective solution for 8- bit microcontroller applications. The battery-powered application benefits from the ultra low-power consumption of STM8L microcontrollers. The example firmware and application hardware design are provided with this application note to enable easy porting of the offered solution to the f

This application note provides implementation solutions for In-Application Programming (IAP) using the STM32F107 Ethernet communications interface. Two possible solutions are provided on top of the LwIP TCP/IP stack: IAP using TFTP (Trivial File Transfer Protocol) or IAP using HTTP (Hypertext Transfer Protocol).

This application note describes the features of the real-time clock (RTC) controller embedded in medium density STM8L15x and medium+ and high density STM8L15x/16x devices microcontrollers, together with the steps required to configure the RTC for use with the calendar, alarm, periodic wakeup unit, tamper detection and chronometer. Five applicative examples are provided with useful configuration information to allow the user to quickly and correctly configure the RTC for calendar, alarm, periodic wakeup unit, tamper detection and chronometer applications.

This is an application note about the STM8L A/D converter, which introduces the internal structure, working principle, and precision improvement methods of the converter.

This application note aims at analyzing the steps required to migrate from an existing STM8L-based design to any one of the other microcontroller types in the fast-growing STM8L family. This application note groups all the most important information and provides a list of the fundamental aspects. The information included in this document can also be extremely useful in a first STM8 design. Studying the issues in this phase can allow the user to adapt from the beginning his design to any future requirement. To benefit fully from the information in this application note, the user should be familiar with the STM8L microcontroller family.