Hi,
I am testing the ESP32-PICO-KIT V3 eval boards. I see that the Strapping for the SDIO is set to 1.8v; however the ESP32-PICO-KIT V3 is using a 3.3v integrated flash.
Is this a mistake in the schematic? It should be a pull-down...
sch:
https://dl.espressif.com/dl/schematics/ ... ematic.pdf
pico data sheet, see section 2.3
http://espressif.com/sites/default/file ... eet_en.pdf
Thanks
ESP32-PICO-KIT V3 -- Strapping SDIO set to 1.8v incorrectly?
ESP32-PICO-KIT V3 -- Strapping SDIO set to 1.8v incorrectly?
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Re: ESP32-PICO-KIT V3 -- Strapping SDIO set to 1.8v incorrectly?
Maybe, although it is marked as NC. It is possible there will be a version of pico with 1.8v flash.
Re: ESP32-PICO-KIT V3 -- Strapping SDIO set to 1.8v incorrectly?
Didn't notice the NC! So how does it even know to power internal flash at 3.3v?
The note at section 3.2 in the PICO datasheet, says it must be 0v.
The note at section 3.2 in the PICO datasheet, says it must be 0v.
Re: ESP32-PICO-KIT V3 -- Strapping SDIO set to 1.8v incorrectly?
Gpio12 has internal pulldown, see strapping pins section of datasheet
Re: ESP32-PICO-KIT V3 -- Strapping SDIO set to 1.8v incorrectly?
just realized that! thanks
Re: ESP32-PICO-KIT V3 -- Strapping SDIO set to 1.8v incorrectly?
don't forgethassan789 wrote:Didn't notice the NC! So how does it even know to power internal flash at 3.3v?
The note at section 3.2 in the PICO datasheet, says it must be 0v.
On SIP package, VDD_SDIO Domain ( 1V8, 3V3 ) is same in this PICO as SIP
you can*t use VDD_SDIO DOMAIN from intern LDO ( i hope there comes a change extern pSRAM, extern SPIFLASH, DEEP_SLEEP, ULP ..)
cause it is NC too ( it is not break out from SIP outside to a pin that you can use if for ) you have to use then own or the 3V3 option from board.
best wishes
rudi
edit: but i can confirm successful:
you can use all 3V3 externals ( pSRAM, SPIFLASH) very well with this SIP (3V3) version
so do not worry - pSRAM 3V3 works great
DOOM on PICO D4 gives me no problem with 3V3 pSRAM
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love it, change it or leave it.
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問候飛出去的朋友遍全球魯迪
love it, change it or leave it.
-------------------------------------
問候飛出去的朋友遍全球魯迪
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