This application note explains the different ways to reset the ST7 Microcontroller, including external reset, internal low voltage detect (LVD) reset, and internal watchdog reset. By selecting different reset sources, the application can be designed more effectively. The document also provides detailed information on the working principle and configuration options of the internal LVD reset.
This document is an application note for the ST72141 chip. It introduces the back EMF detection algorithm of the ST72141 chip. This algorithm uses the on-time of the PWM to detect the back EMF. It solves the problem of the long settling time of the parasitic resonant between the motor inductance and the parasitic capacitance of power devices in the ST72141 sensorless drive system at high speed.
This application note describes how to use the “STR71x_Calculation.xls” file which is intended as a tool to assist in the configuration of the STR71x clocks and baud rates. The STR71x microcontroller contains a variety of peripherals running at different frequencies. Some peripherals have a prescaler to adjust their working frequency, but some others don't and need a specific frequency to run correctly. The file “STR71x_Calculation.xls“ calculates all the working frequencies and shows the re- lated register values for each peripheral. Note: This application note doesn’t substitute the fact that it is mandatory to read the refer- ence manual before the use of this tool.
Describes how to connect a Host debugger to a target STR71x board, and provides detailed descriptions of the internal characteristics of the STR71x, connection issues, and solutions
This application note describes how to set up the Multi-ICE debug interface target when accessing it for the first time. It assumes that the ICE tool software has been installed. Ensure that the RealView Debugger software is installed first before installing the Multi-ICE software. The document also describes the Multi-ICE interface and ICE server setup.
This application note explains how to use the STR71x Real Time Clock (RTC) peripheral and demonstrates how to set up the RTC peripheral to keep track of time and date and generate alarm interrupts.
This application note describes how to use the Sigma-Delta Analog to Digital Converter (ADC) in the STR71x microcontroller. It describes the Sigma-Delta ADC calibration and linearization technique and shows how to apply a conversion speed-up technique to reduce the conversion time.
The aim of this application note is to show how to scan the 4x4 matrix keypad multiplexed with a four 7-segment display. The software attached to this application note scans the pressed key and displays it on the multiplexed 7- segment LEDs. This application note describes how the interrupt capability of the STR710 device is used to offer a better key scan.
This document presents a standard communication interface between a STR71x microcontroller and a PC using the RS232 protocol through the STR71x BSPI peripheral.
