Could you please advise if it's correct to connect MK10 to MKM33 without external pull-up or pull-down resistors?
Please find attached the block diagram.
Here we connect main MCU MK10DX256VLK7 to the metering MCU MKM33Z128ACLH5 and set UART0_TX pin for output, and PTI0 pin for input with internal pull-up/down.
When data goes from MKM33Z128ACLH5 to MK10DX256VLK7 we set PTI0 as output, and UART0_RX as input with internal pull-up/down.
Resistors R50 and R53 are used for nanosecond noise elimination. Vcc is is 3.3V.
Could you please advise if this implementation is correct or we need to add external pull-up/down resistors?
Thanks and regards,