TI E2E Community
Stellaris® ARM® Microcontrollers
Stellaris® ARM® LM3S Microcontrollers Forum
MDL-2SE reduced power
I need to run the MDL-S2E with a maximum of 100mA current and maintain the 1.5 Mbps UART connection. The datasheet shows 200mA max current at 50MHz.
Is it possible to run at a lower frequency and achieve the 100mA target? If so, what are the tradeoffs?
Per my understanding, it may not be possible to achieve the 100mA target for the entire S2E board. The Ethernet + PHY module runs from a clock that is separate from the system clock. So, lowering system clock (say, from 50 MHz to 8 MHz) will only reduce the overall power consumed by peripherals that are running on the system clock. To provide you an estimate, the Ethernet + PHY draws about 100 mA. No matter, how much the system clock is slowed down, the overall power consumption of the board won't probably drop below 100mA.
Warm Regards,Ashish Ahuja
TivaTM C-Series MicrocontrollersFor Applications that Connect, Communicate & Controlwww.ti.com/tiva-c
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with respect to these materials. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.