S32K144 FlexIO配置成UART

[lizboxy]

S32K144 100pin LQFP中，现在用到UART  3个口，是否还可以通过FlexIO再配置成UART一共4各口？还是说FlexIO可以配置成UART但只能映射到原来的UART中，我看Pinout里好像是FlexIO的Pin在UART里复用。请帮忙确认下，谢谢！

[dianabatrlova]

Hello,

As you said the S32K144 has 3x LPUART. If you need more you can configure FlexIO as UART.
FlexIO has available 4 Timers, 4 Shifters, 8 Pins

For one UART 2 shift registers and 2 timers are needed.
For example, if you look at pins PTD1 and PTD0 you can see that these pins are not multiplexed to LPUART. So, you can use it in the FlexIO function as TX and RX.

I hope it helps.

Best regards,

Diana