I/O Pin Characteristics

Table 1. I/O Pin Characteristics (TA=[-40, 85]°C, VDD=[1.8, 5.5]V unless otherwise noted)
Symbol Description Condition Min. Typ. Max. Unit
VIL Input Low Voltage   -0.2 - 0.3×VDD V
VIH Input High Voltage   0.7×VDD - VDD+0.2V V
IIH / IIL I/O pin Input Leakage Current 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/source current per pin group TA = 125°C - - 100(1,2) mA
Maximum combined I/O sink/source current per pin group TA = 25°C - - 200(1,2)
tRISE Rise time VDD = 3.0V, load = 20 pF - 2.5 - ns
VDD= 5.0 V, load = 20 pF - 1.5 -
VDD = 3.0 V, load = 20 pF, slew rate enabled - 19 -
VDD= 5.0 V, load = 20 pF, slew rate enabled - 9 -
tFALL Fall time VDD = 3.0 V, load = 20 pF - 2.0 - ns
VDD = 5.0 V, load = 20 pF - 1.3 -
VDD = 3.0 V, load = 20 pF, slew rate enabled - 21 -
VDD = 5.0 V, load = 20 pF, slew rate enabled - 11 -
Cpin I/O pin capacitance except for TOSC, VREFA, and TWI pins   - 3.5 - pF
Cpin I/O pin capacitance on TOSC pins   - 4 - pF
Cpin I/O pin capacitance on TWI pins   - 10 - pF
Cpin I/O pin capacitance on VREFA pin   - 14 - pF
Rp Pull-up resistor   20 35 50 kΩ
Notes:
  1. 1.Pin group A (PA[7:0]), PF[6:2]), pin group B (PB[7:0], PC[7:0]), pin group C (PD:7:0, PE[3:0], PF[1:0]). For 28-pin and 32-pin devices, pin group A and B should be seen as a single group. The combined continuous sink/source current for each group should not exceed the limits.
  2. 2.These parameters are for design guidance only and are not production tested.
Parent topic: Electrical Characteristics