PDF, 73 Kb, 档案已发布: Feb 28, 2006
PDF, 153 Kb, 档案已发布: Dec 15, 2006
Rotary and Linear Motion Detection Using the MSP430 Scan Interface and Optical Sensors Application ReportThe MSP430FW42x Scan Interface module provides an innovative way of detecting rotation and movement without the need for CPU intervention. While the interface was designed with LC and GMR sensors in mind, it is also possible to use the Scan Interface with optical sensors. Complete measureme
PDF, 611 Kb, 档案已发布: Apr 12, 2013
This application report describes the specific information of the demo box that detects the disc rotation using Scan Interface in MSP430FW42x. Both hardware and software are covered to help the developer understand the working principle of this demo box in a short time.
PDF, 146 Kb, 档案已发布: Aug 1, 2006
With this document, the user will become familiar with the features implemented in the MSP430 scan interface module relating to calibration of the SIFDACRx threshold limits for the channel input comparator control circuitry. Two methods of calibration are discussed, Text Cycle Insertion and Direct Comparator Measurement.
PDF, 443 Kb, 档案已发布: Apr 18, 2007
The scan interface (SIF) of the MSP430F42x family of microcontrollers provides an innovative, low-power method to measure rotation that can be used with a variety of sensor types. Many sensor configurations generate a quadrature signalling sequence, but some do not. The SIF can accommodate a variety of input signals – not just quadrature.This application report describes implementation of a rota
PDF, 104 Kb, 修订版: A, 档案已发布: Sep 11, 2009
PDF, 95 Kb, 修订版: A, 档案已发布: Feb 6, 2015
The purpose of this application report is to facilitate the migration of designs based on the MSP430FW42x Scan Interface (SIF) to the MSP430FR5xx/FR6xx Extended Scan Interface (ESI). This document describes the main differences between the two peripheral modules and provides migration solutions covering both software and hardware aspects.
PDF, 596 Kb, 档案已发布: May 16, 2012
This document is a specification for the ELF-based Embedded Application Binary Interface (EABI) for the MSP430 family of processors from Texas Instruments. The EABI defines the low-level interface between programs, program components, and the execution environment, including the operating system if one is present. Components of the EABI include calling conventions, data layout and addressing conve
PDF, 2.1 Mb, 修订版: A, 档案已发布: Jul 20, 2015
Segment liquid crystal displays (LCDs) are needed to provide information to users in a wide variety of applications from smart meters to electronic shelf labels (ESL) to medical equipment. Several MSP430в„ў microcontroller families include built-in low-power LCD driver circuitry that allows the MSP430 MCU to directly control the segmented LCD glass. This application note helps explain how segmented
PDF, 306 Kb, 档案已发布: Jun 30, 2004
This application report describes how to compare ultralow-power MCUs. It discusses the key differences between popular low-power MCUs and how to interpret features and specifications and apply them to application requirements.
PDF, 184 Kb, 档案已发布: Nov 15, 2004
This report details the factors that influence achievable accuracy of the low frequency oscillator, specifically for real-time clock (RTC) applications. The intent of this application report is to provide an understanding of MSP430-specific factors influencing real-world achievable RTC accuracy using the LFXT1 oscillator with a standard 32.768 kHz watch crystal and present measurement data support
PDF, 49 Kb, 档案已发布: Oct 18, 2000
A simple, efficient, low-cost, boost converter to take 1.5 V from a single type-AA alkaline battery to the operating voltage required by the MSP430 family of ultralow-power microcontrollers is described. Expected battery life is up to 1000 hours.
PDF, 5.5 Mb, 档案已发布: Jan 21, 2000
MSP430 Metering Application Report
PDF, 220 Kb, 档案已发布: Sep 13, 2006
Digital filtering is an integral part of many digital signal processing algorithms. Digital filters are characterized as either recursive [infinite impulse response (IIR)] or non-recursive [finite impulse response (FIR)] filters. IIR filters require a smaller order for the same set of specifications compared to FIR filters, while FIR filters provide a linear phase property. However, IIR filters, i
PDF, 110 Kb, 档案已发布: Dec 14, 1998
This application report describes a software program for performing V.23 FSK modem transceiver functions using an MSP430 microcontroller. It makes use of novel filter architecture to perform DSP functions on a processor with only shift and add capabilities.
PDF, 125 Kb, 档案已发布: Nov 4, 2004
Cyclic Redundancy Code (CRC) is commonly used to determine the correctness of a data transmission or storage. This application note presents a solution to compute 16-bit and 32-bit CRCs on the ultra low-power TI MSP430 microcontroller for the bitwise algorithm (low memory, low cost) and the table-based algorithm (low MIPS, low power). Both algorithms are presented in C and MSP430 assembly. Test co
PDF, 168 Kb, 档案已发布: Feb 28, 2002
This application note describes how C and assembler code can be used together within an MSP430 application. The combination of C and assembler benefits the designer by providing the power of a high-level language as well as the speed, efficiency, and low-level control of assembler.
PDF, 39 Kb, 档案已发布: Oct 13, 2006
Many applications require the generation of random numbers. These random numbers are useful for applications such as communication protocols, cryptography, and device individualization.Generating random numbers often requires the use of expensive dedicated hardware. Using the two independent clocks available on the MSP430F2xx family of devices, it is possible to generate random numbers without s
PDF, 104 Kb, 档案已发布: Aug 3, 2006
PDF, 770 Kb, 档案已发布: Jan 16, 2008
This application report discusses the design of RC-type capacitive single-touch sensors using the MSP430 microcontroller. The MSP430 has some unique features that make it suitable for interfacing with capacitive-touch sensors. The RC-type method does not need special peripherals and can be implemented with all devices in the MSP430 product family. This method is also inherently low power and can
PDF, 475 Kb, 档案已发布: Mar 27, 2008
The MSP430 family of microcontrollers, as part of its broad portfolio, offers both read-only memory (ROM)-based and flash-based devices. Understanding the MSP430 flash is extremely important for efficient, robust, and reliable system design. Data retention is one of the key aspects to flash reliability. In this application report, data retention for the MSP430 flash is discussed in detail and the
PDF, 134 Kb, 档案已发布: Feb 20, 2002
Often in applications with keypads, the condition can occur where a key can be held or stuck down, causing excess current consmption and reducing the battery life of a battery-operated product. This application report shows a solution. The keypad interface in this report, based on the MSP430, draws .1uA while waiting for a key press, is completely interrupt driven requring no polling, and consum
PDF, 64 Kb, 档案已发布: Dec 31, 2005
PDF, 421 Kb, 档案已发布: Oct 1, 2002
The interfacing of the 3-V MSP430x1xx and MSP430x4xx microcontroller families to circuits with a supply of 5 V or higher is shown. Input, output and I/O interfaces are given and explained. Worse-case design equations are provided, where necessary. Some simple power supplies generating both voltages are shown, too.
PDF, 95 Kb, 档案已发布: Mar 29, 2007
Digital filtering can be easily accomplished on the MSP430 using efficient multiplication. The tool accompanying this document automatically converts FIR filter coefficients to MSP430 assembly code that can be used in any application. Horner’s method and CSD format is used to accomplish the efficient multiply operations. The performance of the filter on the MSP430 is shown by evaluating the gain a
