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3V SPI/I2C voltage translation

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Posted at 2/5/2018 03:13:58      1#
Does anyone actually knows if the RK3399 VDDIOs bank @3.0V are Voltage tolerant to VDD+0.3V . Trying to find the information in the RK3399 datasheet but can't find anything.

As per the RK3399 carrier board schematic - the UART2DBG_RX net it directly tied to a 3.3V pullup and the IO bank is set to 3.0V. Any long term issue with this ?
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