Hi PRIYANKA
yes, there is protection diode as depicted on Figure 67. 12-bit ADC Input
Impedance Equivalency Diagram i.MX6UL Datasheet
http://www.nxp.com/docs/en/data-sheet/IMX6ULCEC.pdf
Best regards
igor
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what about internal protection on normal GPIOs and other interface pins like SPI, I2C, CSI etc
there are also protection diodes.
Thanks for the reply igor.
Are these diodes also connected in same way as that of ADC?Can we get the characteristic data for these diodes.?
Hi sadatan
yes they are connected in similar way, characteristic data for these diodes
is not available.
Best regards
igor
What about SPI Pins...If there is overshoot of 0.5V on any SPI pins like MOSI, Clock , MISO and NSS then will this result in conduction of protection diode and damage of these pins?
Hi Igor,
Any comment on this?
Hi sadatah
please check Table 8. Absolute Maximum Ratings,
Table 24. Single Voltage GPIO DC Parameters i.MX6UL Datasheet
http://www.nxp.com/docs/en/data-sheet/IMX6ULCEC.pdf
Best regards
igor
Hi Igor,
Thanks for the reply.
But Is this true for MOSI and Clock signal of SPI as well? We are getting a waveform as attached here? Will that work?
MISO
MOSI
SCLK
Hi sadatan
yes this is applicable to spi signals.
Best regards
igor
Thanks for reply Igor.
Can you please confirm that whether these signals waveforms I have attached in previous question are OK or not?
Also what is the time for which this overshoot of 0.6V is OK if my processor is working on 528MHZ?