16-Bit Ultra-Low-Power Microcontroller, 16kB OTP, 512B RAM, 92 segment LCD
PDF, 60 Kb, File published: Mar 3, 2000
This application report describes in detail the oscillator system present on the MSP430x3xx devices, including use of the digitally-controlled oscillator (DCO), the frequency locked loop (FLL), and the low-power modes.
PDF, 95 Kb, File published: Apr 23, 1999
The 16x16-bit hardware multiplier of the MSP430 family is explained in detail. Function, modes and proven application examples are given for this fast and versatile peripheral. Also shown is a comparison of the speed of solutions using this peripheral versus pure software solutions.
PDF, 153 Kb, File published: Nov 8, 1999
The MSP430 is a 16-bit RISC-like mixed signal controller. This application report provides several experiments for the entry-level MSP-STK430x320 starter kit.
PDF, 59 Kb, File published: May 28, 1999
This application report describes a digital thermometer design that uses the slope ADC capabilities of the Timer Port module on the MSP430x3xx microcontrollers. This report can be used more generally as a reference on how to connect resisitve sensors and reference resistors to the Timer Port module.
PDF, 364 Kb, File published: Jun 22, 1999
This application report shows different simple methods to improve the accuracy of the 14-bit analog-to-digital converter of the MSP430 family. They all use only addition for the correction of the analog-to-digital converter characteristic. Different correction methods are explained--all without the need for multiplication--which makes them usable for real time systems like electronic electricity m
PDF, 220 Kb, File published: Jun 22, 1999
This application report gives a detailed overview of several applications for the 14-bit analog-to-digital converter (ADC) of the MSP430 family. Proven software examples and basic circuitry are shown and explained. The 12-bit mode is also considered, when possible. The References section at the end of the report lists related application reports in the MSP430 14-bit ADC series.
PDF, 49 Kb, File published: Apr 30, 1999
This application report describes and explains techniques for using the MSP430x325 ADC in preset and auto range modes.
PDF, 405 Kb, File published: Jun 21, 1999
This application report shows different linear methods to improve the accuracy of the 14-bit analog-to-digital converter (ADC) of the MSP430 family. Different correction methods are explained: some with monotonicity and some using linear regression. The methods used differ in RAM and ROM allocation, calculation speed, reachable improvement, and complexity. For all correction methods, proven, optim
PDF, 80 Kb, File published: Dec 17, 1999
This application report describes the implementation of a hardware/software universal asynchronous receiver tranmitter (UART) function on the MSP430x31x, MSP430x32x, and MSP430x33x families of 16-bit RISC-like mixed-signal processors using the integrated 8-bit interval timer/counter (8-bit T/C). The UART function described in this report is half-duplex, event-driven, and supports an 8N1 protocol u
PDF, 328 Kb, Revision: A, File published: Jun 1, 1999
This application report describes a complete triac control system using the MSP430. An example of a triac control system is presented and analyzed. Methods for interference reduction, modification for high speed, and enhance security are explained. Alternate power supply circuits are included. A listing of triac control software available is presented in Appendixes A1 through A3.
PDF, 69 Kb, Revision: A, File published: Mar 12, 2002
This application report describes how to use timer_A3 to implement a UART function. The included examples are specifially for the MSP430x11x(1) family, but they can be adapted to any MSP430 family member incorporating timer_A. The UART function uses hardware features of the timer_A3, and software. The implementation is half-duplex, event-driven, and it supports an 8N1 protocol at baud rates from 1
PDF, 32 Kb, File published: Dec 21, 2000
This application report and its associated software demonstrate the control of a DC motor using pulse width modulation (PWM). The Timer A module, which independently generates a PWM output, is used to produce the control signal.
PDF, 127 Kb, Revision: A, File published: Apr 12, 2013
This application report explains a technique that uses two MSP430в„ў microcontrollers to expand the maximum number of LCD segments that can be driven with a single controller. Additional benefits of the technique include increases in available memory, data storage (RAM), and I/O control lines. These benefits are realized without the need for an external LCD driver circuit. The use of a second
PDF, 596 Kb, File published: 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, 228 Kb, File published: 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, File published: 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, 1.2 Mb, File published: 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, File published: Feb 19, 2004
PDF, 91 Kb, File published: 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, File published: 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, File published: 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, 306 Kb, File published: 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, 5.5 Mb, File published: Jan 21, 2000
MSP430 Metering Application Report
PDF, 49 Kb, File published: 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, 110 Kb, File published: 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, 220 Kb, File published: 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, 125 Kb, File published: 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, File published: 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, File published: 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, File published: Aug 3, 2006
PDF, 44 Kb, File published: 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, File published: 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, File published: 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, 128 Kb, File published: 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, 62 Kb, Revision: A, File published: 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, 171 Kb, Revision: A, File published: 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
PDF,
19 Kb, Revision:
H, File published:
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, File published: 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, File published: 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, 82 Kb, File published: Nov 10, 2005
Digital Fan Control with Tachometer using MSP430 Application Report
PDF, 37 Kb, Revision: A, File published: 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, File published: Sep 6, 2016
PDF, 330 Kb, Revision: C, File published: Jan 12, 2012
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Manufacturer's Classification
- Semiconductors> Microcontrollers (MCU)> MSP430 ultra-low-power MCUs> 3 Series
