SONIX SN32F268 - GENERAL PURPOSE I;O PORT (GPIO)

SN32F260 Series
32-Bit Cortex-M0 Micro-Controller
SONiX TECHNOLOGY CO., LTD Page 53 Version 1.5
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GENERAL PURPOSE I/O PORT (GPIO)
5.1 OVERVIEW
Digital ports can be configured input/output by SW
 Each individual port pin can serve as external interrupt input pin.
 Interrupts can be configured on single falling or rising edges and on both edges.
 Individual interrupt levels can be programmed. Internal pull-up resistor.
 All GPIO pins are inputs and floating by default
5.2 GPIO MODE
The MODE bits in the GPIOn_CFG (n=0,1,2,3) register allow the selection of on-chip pull-up resistors, for each pin or
select the inactive mode or inactive with Schmitt trigger disabled mode.
The possible on-chip resistor configurations are pull-up enabled, no pull-up/pull-down with Schmitt trigger enabled
(default), or no pull-up/pull-down with Schmitt trigger disabled.