Interface ADSP-2191MBSTZ-140 with 5V MCU, Is the ADSP-2191MBSTZ-140 5V tolerant? or must level shifting?
The ADSP-2191M has separate power supply connections for the internal (VDDINT) and external (VDDEXT) power supplies. The internal supply must meet the 2.5 V requirement. The external supply must be connected to a 3.3 V supply.
For interfacing ADSP-2191MBST-140 with 5V MCU, we need to use level shifter.
Please refer the ADSP-2191M recommended operating condition from below link page no: 18 / 48