SPI voltage level of the SPI on the VIM 3

VIM3
1

Hi @Totti @Terry

May I know the SPI voltage level on the VIM 3? Is it 3,3 Volt or the 1.8 Volt?
I need to connect and communicate with my sensor using SPI and my sensor’s VDDIO of SPI is 1.8V.

Thanks a lot for the support.

2

The SPI voltage level on the VIM3 is 3.3V. You have to add a level switch to support your sensor.
Thanks!

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3

Thank you for your information.
May I know which Khadas board I should have if I have to employee my VDDIO 1.8 Volt. SPI sensor?

Thanks.

4

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The Edge-V is 1.8V; You can check it out with the edge-v schematic.
Thanks!

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5

Thank you @Totti.

Just for making sure. Why Edge Beginners Guide says SPI3_RXD/I2C0_SCK/GPIO1_C0 has SIGNAL 5V on the table shown as below?
I thought it means VDDIO is 5V. Or it just means it need to be driven by 5V?

GPIO Pinout

SIGNAL PIN PIN SIGNAL
5V 1 21 GND
5V 2 22 SPI3_RXD/I2C0_SCK/GPIO1_C0
HOST1_DM 3 23 SPI3_TXD/I2C0_SDA/GPIO1_B7
HOST1_DP 4 24 GND
GND 5 25 I2C2_SCL/GPIO2_A1
MCU_TX 6 26 I2C2_SDA/GPIO2_A0
MCU_NRST 7 27 3.3V
MCU_SWIM 8 28 GND
GND 9 29 I2S0_SCLK/GPIO3_D0
ADC_IN2 10 30 I2S_CLK/GPIO4_A0
1.8V 11 31 I2S0_SDO0/GPIO3_D7
ADC_IN3 12 32 2S0_LRCK_TX/GPIO3_D2
SPDIF/GPIO3_C0 13 33 I2S0_SDI0/GPIO3_D3
GND 14 34 GND
SPI3_CS/GPIO1_C2 15 35 I2S0_SDI3SDO1/GPIO3_D6
SPI3_CLK/GPIO1_C1 16 36 2S0_SDI2SDO2/GPIO3_D5
GND 17 37 I2S0_SDI1SDO3/GPIO3_D4
Linux_RX 18 38 I2S0_LRCK_RX/GPIO3_D1
Linux_TX 19 39 MCU_PA1
3.3V 20 40 GND
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That is the GPIO header pinout. This is not describing the level!
Thanks

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Oops I saw it now, there are two pin blocks in the table I should have noticed.
Thank you @Totti for your prompt reply :]

I saw that Khadas shop sells three different types of Khada Edge-V which are basic, pro and max.
Do all of three types of Khada Edge-V have 1.8 Volt. SPI?

Thanks.

8

Yes , they just have different DDR/ storage! All the GPIOs are the same!

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Thank you @Totti for your very quick and clear reply.
I already have Khadas VIM3 on my desk which is awesome.
And now I’m going to purchase one Khadas Edge-V.
Look forward connecting my sensor on Khadas Edge-V 1.8 Volt. SPI and see what I got.

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