hi dialog,
In the attachment page 1, it says there are 16Mhz 32.768Kz XTAL within da14580, but in the attachment page 2 or any other reference designs downloaded from dialog, the 16Mhz XTAL is outside da14580, that means XTAL is needed to connect to da14580 externally. Shall we use external XTAL or not?
Peter Fu
Attachment:
Device:
Hi achao1104,
There are no internal XTAL is da's package only RC. Please have a look at the following posts.
http://support.dialog-semiconductor.com/xtal-16mhz-and-32khz-must
http://support.dialog-semiconductor.com/16m-clock-source-and-power-supply
Thanks MT_dialog
in the second post, it says:
The tolerance of internal 16MHz RC oscillator is high and thermal sensitive. It is not recommended for TDMA/TDD BLE application which requires accurate time base for synchronization
in our case, what the device only to do is sending out non-connectable advertise and then sleep, and then send. we are not sensitive in terms of time accurate but sensitive in device cost.
so shall we insist in using the internal 16MHz RC?
Hi Achao, just to clarify : you have to use a 16MHz XTAL with the DA14580, that is mandatory. The device has to have the 16MHZ XTAL . 32kHZ is optional.
BR JE_Dialog