Datasheet Texas Instruments MSP430F1121 — Ficha de datos

Fabricante	Texas Instruments
Serie	MSP430F1121

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Notas de aplicación

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  I2C Interfacing of the MSP430 to a 24xx Series EEPROM
  PDF, 37 Kb, Archivo publicado: dic 14, 2000
  This application report and the associated software demonstrate how to interface an MSP430 microcontroller to an external EEPROM memory using the I2C bus standard. The circuit and software presented are adaptable to any MSP430 device, EEPROMs with other memory sizes, or other external devices that also utilize an I2C interface.
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  Interfacing the MSP430x11x(1) and TLV0831 (Rev. A)
  PDF, 114 Kb, Revisión: A, Archivo publicado: dic 12, 2003
  This application report describes how to interface an MSP430x11x(1) 16-bit RISC-like mixed-signal microcontroller and a TLV0831 8-bit A/D converter. This report is written for the MSP430x11x(1) family, but can be adapted to any MSP430 derivative.
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  Implementing a UART Function with Timer_A3 (Rev. A)
  PDF, 69 Kb, Revisión: A, Archivo publicado: marzo 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
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  PWM DC Motor Control Using Timer A of the MSP430
  PDF, 32 Kb, Archivo publicado: dic 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.
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  MSP430 Embedded Application Binary Interface
  PDF, 596 Kb, Archivo publicado: mayo 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
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  HDQ Protocol Implementation with MSP430
  PDF, 124 Kb, Archivo publicado: feb 19, 2004
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  MSP430 Isolated FET Interface
  PDF, 1.2 Mb, Archivo publicado: 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
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  Spread-Spectrum Clock Source Using an MSP430
  PDF, 228 Kb, Archivo publicado: mayo 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
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  Current Transformer Phase Shift Compensation and Calibration
  PDF, 63 Kb, Archivo publicado: enero 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
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  Economic Voltage Measurement With the MSP430 Family
  PDF, 91 Kb, Archivo publicado: 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
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  Generation and Recognition of DTMF Signals With the Microcontroller MSP430
  PDF, 233 Kb, Archivo publicado: 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
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  MSP430 LFXT1 Oscillator Accuracy
  PDF, 184 Kb, Archivo publicado: 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
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  Choosing an Ultra Low-Power MCU
  PDF, 306 Kb, Archivo publicado: 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.
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  MSP430 Family Mixed-Signal Microcontroller Application Reports
  PDF, 5.5 Mb, Archivo publicado: enero 21, 2000
  MSP430 Metering Application Report
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  Simple 1.5 V Boost Converter for MSP430
  PDF, 49 Kb, Archivo publicado: 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.
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  FSK Modulation and Demodulation With the Microcontroller MSP430
  PDF, 110 Kb, Archivo publicado: dic 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.
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  Wave Digital Filtering Using the MSP430
  PDF, 220 Kb, Archivo publicado: sept 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
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  Mixing C and Assembler with the MSP430
  PDF, 168 Kb, Archivo publicado: 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.
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  CRC Implementation with MSP430
  PDF, 125 Kb, Archivo publicado: 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
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  Random Number Generation Using the MSP430
  PDF, 39 Kb, Archivo publicado: 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
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  Efficient Multiplication and Division Using MSP430
  PDF, 104 Kb, Archivo publicado: agosto 3, 2006
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  Interfacing the MSP430 and TLC549/1549 A/D Converters
  PDF, 44 Kb, Archivo publicado: 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.
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  Interfacing TMS320C5000 DSP to MSP430 Mixed Signal Microcontroller (Rev. A)
  PDF, 82 Kb, Revisión: A, Archivo publicado: 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
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  MSP430 Capacitive Single-Touch Sensor Design Guide
  PDF, 770 Kb, Archivo publicado: enero 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
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  MSP430 Flash Memory Characteristics (Rev. A)
  PDF, 171 Kb, Revisión: A, Archivo publicado: abr 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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  MSP430 Software Coding Techniques (Rev. A)
  PDF, 62 Kb, Revisión: A, Archivo publicado: 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
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  Programming a Flash-Based MSP430 Using the JTAG Interface (Rev. H)
  PDF, 19 Kb, Revisión: H, Archivo publicado: jul 14, 2010
  This 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
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  MSP430 SMBus
  PDF, 128 Kb, Archivo publicado: sept 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.
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  Tiny DCDC Converter Reference Design (Rev. A)
  PDF, 458 Kb, Revisión: A, Archivo publicado: 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.
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  Understanding MSP430 Flash Data Retention
  PDF, 475 Kb, Archivo publicado: marzo 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
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  Interfacing the 3-V MSP430 to 5-V Circuits
  PDF, 421 Kb, Archivo publicado: 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.
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  Implementing An Ultralow-Power Keypad Interface with MSP430
  PDF, 134 Kb, Archivo publicado: 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
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  Li-Ion Battery Charger solution using the MSP430
  PDF, 64 Kb, Archivo publicado: dic 31, 2005
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  Efficient MSP430 Code Synthesis for an FIR Filter
  PDF, 95 Kb, Archivo publicado: marzo 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
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  Boost DC/DC with Ultra-Low Shutdown Current (Rev. A)
  PDF, 121 Kb, Revisión: A, Archivo publicado: 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
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  1.8V – 5.5V Input, High-Efficiency DCDC Converter Reference Design for MSP430 (Rev. B)
  PDF, 961 Kb, Revisión: B, Archivo publicado: 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.
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  Digital Fan Control With Tachometer Using MSP430
  PDF, 82 Kb, Archivo publicado: nov 10, 2005
  Digital Fan Control with Tachometer using MSP430 Application Report
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  AES128 – A C Implementation for Encryption and Decryption (Rev. A)
  PDF, 460 Kb, Revisión: A, Archivo publicado: marzo 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.
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  MSP430 32-kHz Crystal Oscillators (Rev. D)
  PDF, 426 Kb, Revisión: D, Archivo publicado: 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
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  Using the TPS3619 with MSP430 Microcontrollers Can Reduce Sys Power Consumption (Rev. A)
  PDF, 37 Kb, Revisión: A, Archivo publicado: mayo 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.
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  Advanced Debugging Using the Enhanced Emulation Module (EEM) With CCS v6 (Rev. F)
  PDF, 837 Kb, Revisión: F, Archivo publicado: sept 6, 2016
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  Powering the MSP430 from a High Voltage Input using the TPS62122 (Rev. C)
  PDF, 330 Kb, Revisión: C, Archivo publicado: enero 12, 2012
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  ESD Diode Current Specification
  PDF, 520 Kb, Archivo publicado: dic 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.
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  MSP Code Protection Features
  PDF, 752 Kb, Archivo publicado: dic 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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• Semiconductors> Microcontrollers (MCU)> MSP430 ultra-low-power MCUs> MSP430F1x