CC2540: CC2540 and external flash connection

Soo Hyun Lee

Part Number: CC2540
Other Parts Discussed in Thread: CC2640, LAUNCHXL-CC2650

Hello
I want to connect an external flash to the CC2540 as shown in the circuit diagram below.
If it is possible, let me know which pin of CC2540 I should connect to.

over 8 years ago

0 JXS over 8 years ago

TI__Guru** 105180 points

Hello,

Your post mentions "CC2540" throughout, however, you show a CC2640 in your schematic. The CC26xx does not place a restriction on the IOs assigned for using the SSI (SPI) peripheral. You can also refer to the LAUNCHXL-CC2650 for a reference layout with SPI flash.

Best wishes

0 Soo Hyun Lee over 8 years ago in reply to JXS

Intellectual 270 points

Hello
Thanks for the reply.
But you do not seem to understand my question.
My question is, which pin should I connect to when I connect the SPI FLASH to the CC2540 like the cc2640.
So I attached the circuit diagram of CC2640.

0 YiKai Chen over 8 years ago in reply to Soo Hyun Lee

Guru 735685 points

You can refer to table 7.1 Peripheral I/O Pin Mapping in CC254x user guide.

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CC2540: CC2540 and external flash connection