Quark Up R1270 - R1270CEVB - Technical Information Manual
17
General purpose I/O connections
The GPIO0-GPIO3 pins are 4 general-purpose bidirectional pins. Their defa ul t di recti on a fter a power on res et or a
genera l res et i s s et to i nput.
GPIO, when configured as Outputs, ca n be used to drive indicators as leds or buzzers or to s end tri gger s ignal to others
equi pments .
GPIO, when configured as Inputs, ca n a ccept control signals from other equipments or tri gger s ignals from s ensors (i .e.
photocel l s ).
In the fol l owi ng s chema ti c a n exa mpl e of a ppl i ca ti on of GPIO i s s hown.
Fig. 2.3: Quark Up R1270 GPIO connection example
External reset
R1270 ma nual reset can be performed by forcing at l ow level /RESET pin for 10μs a t least. /RESET pin is pulled-up by an
i nterna l res i s tor.
Fig. 2.4: Quark Up R1270 external reset
Quark Up
Module
Quark Up
Module
