35.10 I/O Pin Characteristics

Table 35-16. I/O Pin Characteristics (TA = [-40, 105]°C, VDD = [1.8, 5.5]V Unless Otherwise Stated)
Symbol Description Condition Min. Typ. Max. Unit
VIL Input low-voltage, except RESET pin as I/O -0.2 - 0.3 × VDD V
VIH Input high-voltage, except RESET pin as I/O 0.7 × VDD - VDD + 0.2V V
IIH / IIL I/O pin input leakage current, except RESET pin as I/O VDD = 5.5V, pin high - < 0.05 - µA
VDD = 5.5V, pin low - < 0.05 -
VOL I/O pin drive strength VDD = 1.8V, IOL = 1.5 mA - - 0.36 V
VDD = 3.0V, IOL = 7.5 mA - - 0.6
VDD = 5.0V, IOL = 15 mA - - 1
VOH I/O pin drive strength VDD = 1.8V, IOH = 1.5 mA 1.44 - - V
VDD = 3.0V, IOH = 7.5 mA 2.4 - -
VDD = 5.0V, IOH = 15 mA 4 - -
Itotal Maximum combined I/O sink current per pin group(1) - - 100 mA
Maximum combined I/O source current per pin group(1) - - 100
VIL2 Input low-voltage on RESET pin as I/O -0.2 - 0.3 × VDD V
VIH2 Input high-voltage on RESET pin as I/O 0.7 × VDD - VDD + 0.2V V
VOL2 I/O pin drive strength on RESET pin as I/O VDD = 1.8V, IOL = 0.1 mA - - 0.36 V
VDD = 3.0V, IOL = 0.25 mA - - 0.6
VDD = 5.0V, IOL = 0.5 mA - - 1
VOH2 I/O pin drive strength on RESET pin as I/O VDD = 1.8V, IOH = 0.1 mA 1.44 - - V
VDD = 3.0V, IOH = 0.25 mA 2.4 - -
VDD = 5.0V, IOH = 0.5 mA 4 - -
tRISE Rise time VDD = 3.0V, load = 20 pF - 2.5 - ns
VDD = 5.0V, load = 20 pF - 1.5 -
tFALL Fall time VDD = 3.0V, load = 20 pF - 2.0 - ns
VDD = 5.0V, load = 20 pF - 1.3 -
CPIN I/O pin capacitance except TOSC and TWI pins - 3 - pF
CPIN I/O pin capacitance on TOSC pins - 5.5 - pF
CPIN I/O pin capacitance on TWI pins - 10 - pF
RP Pull-up resistor 20 35 50 kΩ
Note:
  1. Pin group x (Px[7:0]). The combined continuous sink/source current for all I/O ports should not exceed the limits.