TPS65987D: Do SPI pins show all Hi-Z after the boot process of TPS65987D?

K.Yaita

Part Number: TPS65987D

Hi Team,

My customer wants to program SPI Flash under the condition SPI Flash is connected to TPS65987D (SPI_CLK, SPI_MISO, SPI_MOSI, SPI_SS).
He assumes TPS65987D is powered in this case because the absolute maximum rating for these pins is ~(LDO_3V3 + 0.3)V.
Do these four pins show all Hi-Z after the boot process of TPS65987D?

Best Regards,
Yaita

over 4 years ago

0 pdjuandi over 4 years ago

TI__Mastermind 29755 points

Hi Yaita,

Ya, those are input pins to TPS65987D.

Regards,

Peter

0 K.Yaita over 4 years ago in reply to pdjuandi

Guru 29720 points

Hi Peter-san,

Thank you for your support.

I understand these pins are Input (Hi-Z) at RESET STATE however the datasheet shows the following.
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(2) Reset State indicates the state of a given pin immediately following power application, prior to any configuration from firmware
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Do these four pins still show all Hi-Z after the boot process of TPS65987D?

Best Regards,
Yaita

0 K.Yaita over 4 years ago in reply to K.Yaita

Guru 29720 points

Hi Peter-san,

Could you kindly look into it?

Best Regards,
Yaita

+1 pdjuandi over 4 years ago in reply to K.Yaita

TI__Mastermind 29755 points

Hi,

Ya.

Regards.

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TPS65987D: Do SPI pins show all Hi-Z after the boot process of TPS65987D?