• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 30 subscribers
  • Views 170 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.

Original question:

Power consumption in Hercules MCUs

RM48L952: Power Consumption Graph of Texas Instruments Hercules MCUs

Tarun Sharma
Prodigy 50 points
Part Number: RM48L952

Hello,

         I am looking to built a power profile data usingTexas Instruments Hercules family in order to provide "true" estimation for an application board I am designing. Application report # SPNA173–Septemeber 2012 and datasheets covers certain ascepts of this processor that I like to cover in detail. Couple of questions here:

1. Is there additonal information that provides information on power consumption during boot up time, processing at maximum frequency. This can be a number of things, assume worst case. For example, core + ADC + NV memory operation. 

2. Hercules MCU do mention about maximum current consumption. Can this be futher elaborated on how we we got to maximum current level? 

  • 0
    TI__Guru**** 197036 points

    Hello Tarun,

    The typical CPU core power consumption is 260mA, and maximum is 420mA. When running CPU LBIS or RAM PBIST, the maximum CPU core power consumption is 690mA. The maximum value is got with max operating temp, max operating voltage, and maximum CPU frequency (220mhz).

    There is an equation in the footnote that shows the effects of voltage, temp, and frequency on this number. If you take footnote 2, it says that in the maximum power consumption case, the 420mA number could be derated by 1mA/MHz with frequency.