clock stabilization

nagaraj mg

Other Parts Discussed in Thread: MSP430F5501

Dear All,

we are facing a problem related to current consumption,i m using a code for 125ms in sleep mode and after that it will wake for 5ms.according to me the current consumption in 125 ms range is less and after it should increase in 5 ms again it become less in next cycle but practically there is a high current consumption for 100ms and low current consumption for 30 ms i m suspecting the clock stabilization after wake up.can anyone help me to get correct values?

over 13 years ago

0 Timothy T over 13 years ago

TI__Mastermind 28560 points

Hello,

I'm afraid there is not enough information in your question to provide assistance.

Further, it seems as if your problem may relate to one of our microcontrollers or DSPs, in which case you should post to that microcontroller or DSP forum.

73,

Timothy

0 nagaraj mg over 13 years ago in reply to Timothy T

Prodigy 60 points

yes Timothy,its related to MSP430F5501 controller am i facing problem in clock configuration for low current consumption.Can you help me in this regard or tell me the right place where i can express?

Thanks...

0 Timothy T over 13 years ago in reply to nagaraj mg

TI__Mastermind 28560 points

The MSP430 forum is the proper one, here is the link:

http://e2e.ti.com/support/microcontrollers/msp43016-bit_ultra-low_power_mcus/f/default.aspx?DCMP=msp430&HQS=msp430-forum

I will move this question to this forum for you where someone knowledgeable in MSP430 can help.

If you can paste a small amount of your code, it may help others assist you with your problem.

73,

Timothy

0 nagaraj mg over 13 years ago in reply to Timothy T

Prodigy 60 points

Thanks a lot

0 Jens-Michael Gross over 13 years ago

Guru 227245 points

Entering LPM does not automatically mean that the current consumption drops. It depends on what else the MSP does. LPM0, for example, wills top the CPU, but everything else will continue to work, and probably causing most of the current anyway. It makes no sense putting the processor to sleep when one of the output pins is driving an LED with 20mA.

So without your code, and at least some information about your external circuitry (crystals, LEDs, whatever, and of course which MSP you have), nobody can tell you what's wrong.
It's like picking a doctor's phone number from the public phone book, calling him and saying "I don't feel good, what shall I do?"

0 nagaraj mg over 13 years ago in reply to Jens-Michael Gross

Prodigy 60 points

Prodigy40 points

Hi All,

I am using MSP430F5501 controller for low power application in this we are using two GPIO pins 1&2 which are also multiplexed with coparator B.Comparator B have four channels in which two channels are connected to these GPIO pins 1 and 2 and others are connected to another two I/O pins 3 and 4.We are using comparator for these 3&4 pins but we are not using 1&2 pins for comparator even though comparator is turning ON automatically for these 1&2 pins and consuming energy and affecting these GPIO pins as well.So can anybody tell me why this is happening without using those pins for comparator?

0 nagaraj mg over 13 years ago in reply to nagaraj mg

Prodigy 60 points

Thank you for those who replied for my last tag

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clock stabilization