Part Number: CC2540KEYFOB-RD Hi Guys,
I am developing a BLE Master device using BLE121LR for controlling the CC 2540 KEYFOB.
I am able to get all the services, even switch keys service of keyfob by writing to corresponding handlers. But when I try to…
Have you reviewed the Keyfob reference schematic & layout: www.ti.com/.../cc2540keyfob-rd
You should be able to find a suitable ground connection after reviewing the design files. If not, please reply.
Have you looked at the keyfob reference design files and used it in your layout: www.ti.com/.../cc2540keyfob-rd
In terms of peak power, this will typically be during the TX/RX phase. You can measure the actual usage using the procedure in…
Acutally you are mssing something here. The CC2540 Keyfob is actually a 4 layer board, with a large portion of layer 3 dedicated as a supply plane. So what looks like another via to a ground plain is actually a via to the supply plane on layer…
I'm not sure if this is what you are looking for,
but the CC2540 Keyfob and dongle reference designs
can be found here, respectively:
Both designs made in cadstar…