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Application Notes from Texas Instruments

Measuring the Period of an Input Square Wave

Texas Instruments
This EVM application measures the elapsed time between two rising edges of an input square wave using the capture input module in the Event Manager. The elapsed time (in microseconds) is output to a variable that can be viewed in the debugger environment. This application is written in C2xx Assembly code. The algorithm described in this application report was implemented using the Texas Instrument

A Step by Step Guide on Using the MSP430 as a Bootloader for the CDCM6208VxEVM (Rev. A)

Texas Instruments
CDCM6208, CDCM6208V1EVM, CDCM6208V2EVM A Step by Step Guide on Using the MSP430 as a Bootloader for the CDCM6208VxEVM

All Window Watchdog Supervisors

Texas Instruments
This application report presents the configuration of the window–watchdog in a supervisor circuitry. The report presents analysis for various window settings and their worst-case scenarios.

Sensorless Field Oriented Ctrl of 3-Phase Perm. Magnet Synch. Motors-HVDMC Kit

Texas Instruments
This application report presents a solution to control a permanent magnet synchronous motor (PMSM)using the TMS320F2803x microcontrollers. TMS320F2803x devices are part of the family of C2000microcontrollers which enables the cost-effective design of intelligent controllers for three phase motorsby reducing system components and increasing efficiency. With these devices it is possible to r

Cell-Balancing in the bq208x Advanced Gas Gauge Solutions

Texas Instruments
Serial connection of cells in a battery pack can result in reduced-capacity performance if some of the cells have different capacity or charge levels. The problem is that during charging or discharging of the pack individual cell differences lead to different voltages ineach cell. Since the charger monitors only the summary voltage some cells can be undercharged and others overcharged. Underch

UART Bootloader for Hercules TMS570LS31X MCU

Texas Instruments
This application report describes how to communicate with the Hercules™ UART bootloader. The UART bootloader is a small piece of code that can be programmed at the beginning of Flash to act as an application loader as well as an update mechanism for applications running on a Hercules Cortex™-R4 based TMS570LS31x microcontroller.

Using Standard Power-Over-Ethernet Controllers for High-Powered Devices

Texas Instruments
Using Standard Power-Over-Ethernet Controllers for High-Powered Devices

AN-1254 DDR-SDRAM Termination Simplified Using a Linear Regulator (Rev. A)

Texas Instruments
This applications report describes the use and benefits of the LP2995 for DDR-DRAM Termination.

Advanced Debugging Using the Enhanced Emulation Module (EEM) With CCS v6 (Rev. E)

Texas Instruments

This document describes the benefits of the Enhanced Emulation Module (EEM) advanced debugging features that are available in the MSP430™ devices and how they can be used with Code Composer Studio™ IDE(CCS) version 6 software development tool.

The EEM advanced debugging features support both precision analog and full-speed digital debugging. The configuration of the debug environment for maximum control and the use of the embedded trace capability are described. Some techniques that allow rapid development and design-for-testability are demonstrated.

Recommendation for Register-Related SPD Settings on DDR3 RDIMM (Rev. B)

Texas Instruments
DDR3 memory modules can be populated with EEPROMs that use the Serial Presence Detect memorytechnology. The SPD EEPROM contains information for the memory controller about the memory module.On Registered DIMM (RDIMM) the SPD bytes 65-76 are reserved for register specific content.This application report gives DIMM manufacturers who are using TI registers on their modules arecommendation

Interfacing the ADS7822 to synchronous serial port of the 80x51 Microcontroller

Texas Instruments
Analog-to-digital converters can be controlled by a normal I/O port or with the synchronous serial port of the 80x51 microcontrollers. The synchronous serial port is more efficient however there are some pitfalls to be aware of when configuring the 8-pin A/D converters (ADS1286 ADS7816 ADS7817 and ADS7822) from Burr-Brown. This application bulletin describes how to get around these pitfalls an

Programmable-Gain Instrumentation Amplifiers

Texas Instruments
The INA115 is a precision instrumentation amplifier (IA). Its gain-sense and amplifier output connections are available so that gains can be accurately set using external resistors. By adding switches or a multiplexer you can make a precision programmable-gain IA (PGIA). Using the circuit topology shown in this bulletin the switches are in series with op amp inputs so their resistance does not a

1-uA Capacitive Grip Detection Based on MSP430 Microcontrollers (Rev. B)

Texas Instruments
This application report discusses how to design a simple and ultra low-power grip detector BoosterPack for the MSP430 LaunchPad™. The PINOSC feature in every msp430G2xx2 and msp430G2xx3 device makes it possible to eliminate all the external components when implementing a capacitive touch design. All the components used in the grip detector such as capacitive sensors LEDs are all integrate

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