16-Bit-Ultra-Low-Power-Mikrocontroller, 60-kB-Flash, 2-KB-RAM, 12-Bit-ADC, 2 USARTs, HW-Multiplikator 64-LQFP -40 bis 85
PDF, 129 Kb, Datei veröffentlicht: Dec 14, 2000
This application report describes how to simultaneously create a sine wave, a ramp, and a dc level with pulse-width modulated (PWM) signals from Timer_B on the MSP430 ultralow power family of microcontrollers. PWM signals are often used to create analog signals in embedded applications. This report shows how to create both ac signals and dc levels with PWM outputs. The example in this report uses
PDF, 419 Kb, Datei veröffentlicht: Jul 6, 2004
PDF, 169 Kb, Datei veröffentlicht: Mar 7, 2003
This application report discusses the SPI interfacing implementation of a system featuring the following devices: TLV2541, TLC2551, TLC3541 and TLC4541. These ADCs offer a variety of options for users ranging from extremely low power and wide voltage supply rangeto fast conversion throughput. All devices share a very small (MSOP) footprint and are pin-for-pin compatible for easy upgradeability.
PDF, 123 Kb, Datei veröffentlicht: Feb 10, 2003
This application note discusses the features of the TLC2552 and TLV2542 ADC. An SPI interface code example for the MSP430F149 to the TLC2552 ADC, and for the MSP430F149 to the TLV2542 ADC, are also presented.
PDF, 91 Kb, Datei veröffentlicht: Jul 23, 2002
The ADS8364 16-bit parallel output analog-to-digital converter has a number of features that allow for an easy interface to the MSP430x1xx family of microcontrollers. Using ports 1 and 2 of the Texas Instruments MSP430F149, this application note focuses on configuring, sampling and converting analog data presented to the ADS8364 ADC. Port 1 is used for control, while port 2 accepts byte mode dat
PDF, 385 Kb, Revision: A, Datei veröffentlicht: Jun 22, 2007
The development of wireless communications has occurred rapidly throughout the past decade. One of the standards used is the Infrared Data Association (IrDA) specification. The protocol introduced by this entity consists of three basic layers: IrPHY, IrLAP, and IrLMP, which supply a base for many other applications. This application report implements the IrDA Lite protocol (IrPHY, IrLAP, and IrLMP
PDF, 101 Kb, Datei veröffentlicht: Jan 25, 2001
The promise of cost-effective re-programmable MSP430 MCU systems has recently come to fruition with the integration of In-System Programmable (ISP) flash memory. Firmware delivered just in time during manufacturing, updateable code in field-deployed systems, and the elimination of discrete EEPROMs are now design realities. This application report demonstrates the flexibility of in-system programma
PDF, 89 Kb, Datei veröffentlicht: Feb 17, 2005
This application report discusses the implementation of a fuzzy logic control algorithm using an MSP430F14x device. Fuzzy logic control algorithms can be used to solve problems that are difficult to address with traditional control techniques. As an example, a universal serial motor speed control system is demonstrated.
PDF, 189 Kb, Revision: A, Datei veröffentlicht: Jul 11, 2002
The TLC3544 and TLC3548 14-bit serial output analog-to-digital converters can easily interface to the serial peripheral interface port of many popular microcontrollers. Using the serial port of the Texas Instruments MSP430F149, this application note focuses on configuring, sampling and converting analog data presented to the ADC. The assembly code developed for this application note shows how the
PDF, 98 Kb, Datei veröffentlicht: Dec 31, 2002
This application report describes how to interface the DAC7731 digital-to-analog converter to the MSP430F149 microcontroller.
PDF, 991 Kb, Revision: A, Datei veröffentlicht: Feb 2, 2004
Computer communication systems and especially the Internet are playing a rapidly, increasingly important role in our everyday environment. But today, this is not only a domain of personal computers or workstations. More and more, it makes its way to smaller network nodes, too. Imagine applications that are able to control hardware via a standard Internet browser, to transmit and visualize the stat
PDF, 596 Kb, Datei veröffentlicht: 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, 1.2 Mb, Datei veröffentlicht: Oct 10, 2003
This application report describes how to build an isolated FET interface for the MSP430 Flash Emulation Tool (FET). When developing and debugging line-powered MSP430applications such as motor control, electricity energy meters, power monitoring systems etc. it is important to have electrical isolation for the development tool such that the personnel involved and the connected electronic equipmen
PDF, 124 Kb, Datei veröffentlicht: Feb 19, 2004
PDF, 228 Kb, Datei veröffentlicht: May 31, 2006
While spread-spectrum clocking has long since been used in processor and memory clock trees, there are many other clocked systems, such as power supplies or switch-mode amplifiers, that continue to use a single-frequency clock. This can, in turn, generate significant EMI and can make meeting governmental regulations for EMI challenging. These regulations typically set a limit on peak energy within
PDF, 63 Kb, Datei veröffentlicht: Jan 30, 2001
This application report demonstrates a digital technique to compensate and calibrate the phase shift of a current (or voltage) transformer used in electric power of energy measurement. Traditional analog compensation is replaced by a digital finite impulse response (FIR) filter. A technique emulating a non-unity power factor (non-UPF) load makes the calibration fully automatic. The calibration tim
PDF, 91 Kb, Datei veröffentlicht: Oct 12, 1999
This application report describes voltage and current measurement methods using the MSP430 universal timer/port module. The report explains the two measurement methods (charge and discharge) and shows how to measure voltage and current. The equations for the calculations are also given. Further sections show additional applications such as the measurement of two voltage inputs, bridge arrangem
PDF, 233 Kb, Datei veröffentlicht: Oct 1, 1997
The first part of the Application Report describes the generation of DTMF signals using the Microcontroller MSP430. Following an explanation of the most important specifications which are involved, the theoretical and mathematical processes will be discussed with which sinusoidal waveforms can be derived from square-wave signals, by making use of appropriate analog filters. Tested examples of soft
PDF, 184 Kb, Datei veröffentlicht: 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, 5.5 Mb, Datei veröffentlicht: Jan 21, 2000
MSP430 Metering Application Report
PDF, 306 Kb, Datei veröffentlicht: 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, 49 Kb, Datei veröffentlicht: 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, 220 Kb, Datei veröffentlicht: 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, Datei veröffentlicht: 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, Datei veröffentlicht: 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, Datei veröffentlicht: 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, Datei veröffentlicht: 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, Datei veröffentlicht: Aug 3, 2006
PDF, 44 Kb, Datei veröffentlicht: Nov 16, 2000
This application report describes how to interface an MSP430 mixed-signal microcontroller with the TLC549 and TLV1549 3-volt A/D converters. This report is written for the MSP430x11x(1) family, but can be adapted to any MSP430 derivative.
PDF, 82 Kb, Revision: A, Datei veröffentlicht: Oct 13, 2000
The TMS320C5000в„ў family of digital signal processors (DSPs) features Host Port Interface Controllers (HPI) and Direct Memory Access Controllers (DMAC) for efficient data movement without any CPU involvement. The HPI enables the DSP to interface to host processors (typically microcontrollers) bidirectionally with minimal or no external interface logic. This application report presents a hardw
PDF, 770 Kb, Datei veröffentlicht: 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, 62 Kb, Revision: A, Datei veröffentlicht: Jul 17, 2006
This application report covers software techniques and topics of interest to all MSP430 programmers. The first part of the document discusses the MSP430 standard interrupt-based code flow model, recommended for the vast majority of applications. The next part discusses a handful of techniques that should be considered by any developer that sets out to develop an MSP430 application. Using these met
PDF, 128 Kb, Datei veröffentlicht: Sep 29, 1999
This application report describes a software implementation of the system management bus (SMBus) for the MSP430 microcontroller. It includes all master protocols, an interrupt-driven slave, and master usage examples. SMBus is derived from the I2C and is commonly used in smart batteries and other system devices.
PDF, 171 Kb, Revision: A, Datei veröffentlicht: Apr 14, 2008
Flash memory is a widely used, reliable, and flexible nonvolatile memory to store software code and data in a microcontroller. Failing to handle the flash according to data-sheet specifications may result in unreliable operation of the application. This application report explains the physics behind these specifications and also gives recommendations for correct MSP430 flash handling. All examples
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19 Kb, Revision:
H, Datei veröffentlicht:
Jul 14, 2010This application report has been superseded by the document shown below. Information previously contained in this application report can be found by clicking on the following links.- MSP430 Programming Via the JTAG Interface User's Guide Download MSP430 Programming Via the JTAG Interface (PDF) Download
PDF, 458 Kb, Revision: A, Datei veröffentlicht: Jun 14, 2010
This reference design is presented to help application designers and others who are trying to use the MSP430 in a system with an input voltage in the range of 3.6 V to 6 V with the primary design objective to minimize solution size as well as to maintain high efficiency and long battery life.
PDF, 475 Kb, Datei veröffentlicht: 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, 37 Kb, Revision: A, Datei veröffentlicht: May 19, 2003
The MSP430 series of microcontrollers are ideal in applications where battery life is critical. These microcontollers require only 0.1?A of current in low-power RAM retention mode; In this mode the microcontroller must have power to retain volatile memory. In some systems with charge pumps, the TPS3619 can be used to shut down the charge pump, saving system power consumption.
PDF, 837 Kb, Revision: F, Datei veröffentlicht: Sep 6, 2016
PDF, 82 Kb, Datei veröffentlicht: Nov 10, 2005
Digital Fan Control with Tachometer using MSP430 Application Report
PDF, 421 Kb, Datei veröffentlicht: 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, 64 Kb, Datei veröffentlicht: Dec 31, 2005
PDF, 134 Kb, Datei veröffentlicht: 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, 961 Kb, Revision: B, Datei veröffentlicht: Jun 14, 2010
This reference design is presented to help application designers and others who are trying to use the MSP430 in a system with an input voltage in the range of 1.8 V to 5.5 V, and who must increase the application run time by making use of the complete battery voltage range while still maintaining high efficiency over the entire battery life.
PDF, 121 Kb, Revision: A, Datei veröffentlicht: Jun 14, 2010
This reference design is presented to help application designers and others who are trying to use the MSP430 in a system that requires a very low input voltage range while also maintaining high efficiency. Battery life is extended as well as a result of the low quiescent current (5 mA) and ultra-low shutdown current (5 nA) of the TPS61097-33. This particular design allows for an input voltage betw
PDF, 95 Kb, Datei veröffentlicht: 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
PDF, 426 Kb, Revision: D, Datei veröffentlicht: Jul 18, 2017
Selection of the right crystal, correct load circuit, and proper board layout are important for a stable crystal oscillator. This application report summarizes crystal oscillator function and explains the parameters to select the correct crystal for ultra-low-power operation of an MSP430в„ў MCU. In addition, hints and examples for correct board layout are given. The document also contains detailed i
PDF, 330 Kb, Revision: C, Datei veröffentlicht: Jan 12, 2012
PDF, 460 Kb, Revision: A, Datei veröffentlicht: Mar 17, 2009
This application report describes the AES algorithm and the use of a suggested C implementation for AES encryption and decryption with MSP430.Note: This document may be subject to the export control policies of the local government.
PDF, 551 Kb, Revision: A, Datei veröffentlicht: Apr 1, 2016
Multiple MSP ultra-low-power microcontrollers offer analog-to-digital converters (ADCs) to convert physical quantities into digital numbers, a function that is widely used across numerous applications. There are times, however, when a customer design demands a higher resolution than the ADC of the selected MSP can offer. This application report, which is based on the previously-published Oversampl
PDF, 520 Kb, Datei veröffentlicht: Dec 7, 2015
This document explains the maximum ESD diode current specified for GPIO on MSP microcontrollers. Sometimes signals on specific pins exceed the supply of the MSP MCU. In such a case, the device can handle this overvoltage condition through the ESD diodes, but the ESD diode specification must be considered during application design. The items to be considered are described in this document.
PDF, 475 Kb, Datei veröffentlicht: Oct 5, 2012
LCDs are a growing commodity in todays market with products as diverse as children's toys to medical devices. Modern LCDs, along with the graphics displayed on them, are growing in complexity. A graphics library can simplify and accelerate development while creating the desired user experience. TI provides the MSP430 Graphics Library for use in developing products with the MSP430в„ў MCU. This
PDF, 752 Kb, Datei veröffentlicht: Dec 7, 2015
MSP microcontrollers (MCUs) offer a number of features to help control code accessibility in the device, to add different layers of code access management and protection strategies. These include features that can lock or password protect the JTAG/SBW access, IP Encapsulation (IPE) to isolate sensitive code with different permissions than the rest of the program, and bootloader (BSL) access featur
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