LPUART pins

[sapirbuz]

Hi,

Can LPUART3 work using the following pins?

LPUART3_TXD- GPIO_B0_08

LPUART3_RXD- GPIO_EMC_14

LPUART3_CTS_B- GPIO_AD_B1_04

LPUART3_RTS_B- GPIO_EMC_16

In case yes, what will happen when the EMC bank is 1.8v and the GPIO bank is 3.3V?

[Omar_Anguiano]

Hello
Hope you are well.
Could you please provide me the part number you are using? This to confirm  if LPUART3 is present on those pins.

If EMC bank is 1.8v, the output from those pins will be 1.8v while the GPIO_AD bank output will be 3.3v. This could cause issues depending on the operating voltage of the device you´re trying to communicate.

Best regards,
Omar

[sapirbuz]

thank you

the PN is MIMXRT1051CVL5B

[Omar_Anguiano · Accepted solution]

Thank you. Those pins have LPUART functionality and can be used.  Please consider that powering the rails with different voltages will have different output voltages in each pin.

Best regards,
Omar

[sapirbuz]

thank you