• State Resolved
  • Locked Locked
  • Replies 3 replies
  • Subscribers 29 subscribers
  • Views 343 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

RM48Lx50 Power Consumption

Helge
Prodigy 50 points

As in the datasheet of the RM48Lx50 Series MCU the values for VCC digital supply current (operating mode) are left blank, I find it hard to decide whether this MCU is suitable for a portable application or not.

Could you give any data about power consumption? Especially run modes at lower clock frequencies in order to save power.

 

  • 0
    TI__Mastermind 49120 points

    Hello Helge,

    We will include the power estimates in the next release of the datasheets. Here are the preliminary current estimates for the RM48Lx50 parts:

    ICC, Core Supply Current, Operating Mode, HCLK = 200MHz, VCLK = 100MHz        375 mA

    ICC, Core Supply Current,CPU LBIST Mode, LBIST clock frequency = 100MHz        400 mA

    ICC, Core Supply Current, PBIST Mode, HCLK = 200MHz, VCLK = 100MHz              425 mA

    Note that these are estimates for the maximum current consumption for the hottest process corner parts, at high temperature and with the core supply at the max value of the specified range (1.32V).

    We are currently working on the current estimates for lower frequency operation.

    Regards, Sunil

  • 0 in reply to Sunil Oak
    Prodigy 50 points

    Hi Sunil,

    is it realistic to anticipate an ICC Core Supply Current at HCLK = 20MHz, VCLK=20MHz would be 37.5mA?

    What would the minimum acceptable HCLK Frequency be? (To ensure that all peripherals are still working).

    Best regards,

     

    Helge

     

  • 0 in reply to Helge
    TI__Mastermind 49120 points

    Hi Helge,

    It is quite feasible to expect the current consumption to be about the number you quoted. This number will increase with increasing temperature due to the associated increase in leakage current. We do not have operating current data across multiple device operating frequencies and temperatures yet, although it is in the plans.

    There is no minimum frequency specification for HCLK or VCLK. You can slow down the device clock domains as much as you want.

    Best regards,

    Sunil