how read parallel 8 bits data in pins and write to RAM the fastest?

[chenlmm]

There are parallel 8 bits input to nrf52832 GPIO pins,I want to read the data from the pins and writ it to a RAM.how to do read the data in one CPU clock?

[Nguyen Hoan Hoang]

This is the fastest way but not in 1 clock, not even if you write it in assembly.

uint32_t x = NRF_GPIO->IN;