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achao1104
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shall we use external xtal 16Mhz on earth?

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:
MT_dialog
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Hi achao1104,

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

achao1104
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in the second post, it says:

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?

JE_Dialog
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Hi Achao, just to clarify :

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