interfacing of gsm modem with MSP430FG439

ankush kansal said:

i have gsm modem sim900 then is it compatible with MSP430fg439

The way to answer that question is to study the documentation (datasheets, etc) for both the sim900 and the MSP430fg439:  that will tell you what facilities each one requires, and what facilities each one provides - if the two match, then the devices are, by definition,  compatible.

ankush kansal said:

what are the things that need to be care while interfacing 

See: http://www.8052.com/forum/read/160143

ankush kansal said:

my project is sending data in form of sms through gsm modem wat gps is getting

Note that there are hundreds of such projects already on the web...

thank sir for ur help but sir i need to know if there is ti gsm module which could help in interfacing with msp430fg439

ankush kansal said:

thank sir for ur help but sir i need to know if there is ti gsm module which could help in interfacing with msp430fg439

So why did you say sim900, then?

AFAIK, TI do not make modems/modules; they make chipsets for use by modem/module manufacturers - but they do not make the modems/modules themselves:

TI said:

Availability Disclaimer

This product is intended for high-volume wireless OEMs and ODMs and is not available through distributors. If your company meets this description, please contact your TI sales office.

http://www.ti.com/general/docs/wtbu/wtbuproductcontent.tsp?templateId=6123&navigationId=12645&contentId=4664#disclaimer

I think Enfora modems/modules use TI chipsets: http://www.enfora.com/index.cgi?PageLanding:CONTENT_ID=53&User:LANGUAGE=en

Anyhow, regardless of who makes the modem/module, the task of interfacing it to an msp430fg439 (or any other microcontroller, for that matter) remains the same - as previously stated.