I'm attaching a cc2541em to a battery-powered smartrf05bb.
There is no jumper on the board present. EM selection switch is in SOC/TRX position.
I attach my Ammeter to P7 and switch on the board.
However, in sleep mode I do not obtain 1 uA. In fact, I see 0.2mA.
Instead, if moving EM selection switch to MSP position, I obtain 0.08mA. Just being curious why this happens. Datasheet says it should by SOC/TRX.
By removing the cc2451em from the battery board and powering in other manners, I obtain the desired value in the Ammeter.
My goal is obviously to see my 1uA while the node is powered by smartRF05BB! :)
So, I'm omitting something, please let me know your thoughts!
Please click the Verify Answer button on a post if it answers your question! :)Also, try to @mention me so I receive notifications of your comments!
In case no one answered this question yet.
I think that the excessive power consumption you'r measuring is drawn from the on-board SPI flash (25PE20VP),
which is not properly configured. Refer to swru209b Appendix A.4 (last page in schematic section) for pinout.
You may also solder it out just to prove a point.
Thank you for marking the thread as answered if your question was answered :)
In reply to Igor Sherer:
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.