TJ=-40°C to 105°C, VBAT=0.8 V to 3.4 V and TJ=25°C, VBAT=1.25 V for typical values (unless otherwise noted).

Table 1. GPIO electrical specification
Symbol Description Min. Typ. Max. Units
VIH Input high voltage 0.7 x VOUT VOUT V
VIL Input low voltage VSS 0.3 x VOUT V
VOH Output high voltage 0.75 x VOUT VOUT V
VOL Output low voltage VSS 0.25 x VOUT V
PUGPIO Pull-up resistor 50 kΩ
PDGPIO Pull-down resistor 500 kΩ
IDRIVE_LO Drive strength, weak 2 mA
IDRIVE_HI Drive strength, strong 4 mA
tDEB_GPIO Input debounce 10 ms