<< Chapter < Page Chapter >> Page >

Figure 2 also shows the necessary power-supply connections (DVCC, DVSS), programmer/debugging tool connections (SBWTCK, SBWTDIO), and general I/O and peripheral connections (P3.1, TA1.0, CA2, UCB0SDA). When beginning any design with the MSP430 MCU, reviewing the given device’s block diagram and package pinout can provide a great guide to what is possible, as well as any constraints (such as memory size or pinout limitations).

Connecting the MSP430 MCU in any system is, in most cases, very straightforward. The first consideration should be the power-supply requirements. Most MSP430 devices operate at 1.8 V to 3.6 V, so a typical 3-V supply will work great. Connecting the JTAG to support device memory programming and debugging is also important. For MSP430G2xxx devices, there are two possibilities: standard four-wire JTAG or MSP430 MCU-specific Spy-Bi-Wire (SBW, or two-wire JTAG). Both interfaces are acceptable for programming and debugging application code. The main advantage of the four-wire mode is speed. The main advantage of the two-wire SBW mode is reduced pin-connection requirements.

Figure 3 is an example schematic thatshows the baseline connections for the MSP430G2553, as well as some examples of other connections that can be made to the I/Os and integrated peripherals.

Figure 3 shows the connections of the MSP430G2553 in a typical sensor interface application. In this example, the MSP430G2553's integrated ADC10 is used to measure an analog signal via a thermistor that changes resistance as temperature increases or decreases, and also interfaces using an I2C bus from the USCI module to an external humidity sensor. In addition, a 32.768-kHz watch crystal keeps accurate timing; two switches, along with one PWM-controlled LED, provide a simple user interface. To save power from the 3-V coin cell battery, when not in use the humidity sensor and thermistor ladder can be powered off using a general-purpose I/O (P2.5) and the internal voltage reference (VREF+), respectively.

Now that we've covered the basics and how to understand the capabilities of a given MSP430 device, let’s look more closely at the documentation and how to use it most effectively. MSP430 device documentation can be broken up into three main categories:

  • Device-specific data sheet (e.g., MSP430G2553 data sheet . ) Here, you will find anything device-specific: pinouts, block diagrams, absolute operating conditions (supply voltage and operating temperature ranges), electrical parameters and performance tolerances (power consumption, ADC accuracy, and internal clock minimum and maximum frequencies).
  • Device family user’s guide (e.g., MSP430x2xx family user's guide ) . This document contains information applicable to all devices in a family: peripheral detailed descriptions, register and bit function definitions, CPU and instruction set, power mode definitions and settings. Some peripherals included in the user’s guide will not be present in a given device, as it is intended to cover all peripherals within a given family.

Questions & Answers

Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
NANO
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
NANO
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
what is biological synthesis of nanoparticles
Sanket Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
Privacy Information Security Software Version 1.1a
Good
Got questions? Join the online conversation and get instant answers!
Jobilize.com Reply

Get the best Algebra and trigonometry course in your pocket!





Source:  OpenStax, Senior project guide to texas instruments components. OpenStax CNX. Feb 12, 2013 Download for free at http://cnx.org/content/col11449/1.3
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Senior project guide to texas instruments components' conversation and receive update notifications?

Ask