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Last post
Mon, 2017-08-07 17:28
#1
guxiang
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Last seen:2 weeks 2 days ago
加入:2017-05-12 04:18
DA14681 VDDIO pin

Hi, dialog
VDDIO pad is the supply power of QSPI Flash and is analog input type as the datasheet said. But we can't see any external power domain connected to the VDDIO pin in the "DA14681_basic_devkt_sch.pdf" schematic. In this case , is the soc internal 3.3v domain supply for the VDDIO pad ? And can it work well for supplying QSPI Flash?

Device:
DA1468x
Tue, 2017-08-08 16:49
MT_dialog
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Last seen:1 month 2 weeks ago
Staff
加入:2015-06-08 11:34
Hi guixiang,

Hi guixiang,

The VDDIO pad is the flash interface pin, not exactly the actual power supply of the flash, its needed in order for the 68x to be aware for the voltage levels that the current flash operates. And, yes you are able to power the flash from the V18 or V33 depending on the type of flash that you are using, this is also mentioned on the UM-B-066 DA1468x-Development-Kit-Basic.pdf.

Thanks MT_dialog