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Power consumption reduction for mSDRAM

Nandakumar MReddy
Prodigy 195 points

HI,

I am using MT48H4M16LFB4-75 mSDRAM in my application. As per the datasheet it is shown that maximum power consumption is 70mA. But I dont know what is the minimum current consumption by the device. Is their any method to put the device(mSDRAM) in low power mode. Because we will use mSDRAM only during data transfer. most of the time we will not use mSDRAM functionality. In this case how do i save my total power consumption.

Regards

Nanda Kumar

  • 0
    Prodigy 125 points

    See this post:

    http://e2e.ti.com/support/dsp/tms320c5000_power-efficient_dsps/f/109/p/109364/578384.aspx

    You should be able to get the mSDRAM into "power down mode" (~150 uA) by issuing a "POWER DOWN" command and disabling the clock to the mSDRAM.  If you need to retain data, then you can put the device into "self refresh" mode.

    The C5505 EMIF does not seem to support putting the mSDRAM into "deep power down" (~10uA).