I/O Pin Characteristics

Table 1. I/O Pin Characteristics (TA=[-40, 105]°C, VDD=[1.8, 5.5]V unless otherwise noted)
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=1.5mA - - 0.36 V
VDD=3.0V, IOL=7.5mA - - 0.6
VDD=5.0V, IOL=15mA - - 1
VOH I/O pin drive strength VDD=1.8V, IOH=1.5mA 1.44 - - V
VDD=3.0V, IOH=7.5mA 2.4 - -
VDD=5.0V, IOH=15mA 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 sink current on RESET pin as I/O VDD=1.8V, IOL=0.1mA - - 0.36 V
VDD=3.0V, IOL=0.25mA - - 0.6
VDD=5.0V, IOL=0.5mA - - 1
VOH2 I/O pin source current on RESET pin as I/O VDD=1.8V, IOH=0.1mA 1.44 - - V
VDD=3.0V, IOH=0.25mA 2.4 - -
VDD=5.0V, IOH=0.5mA 4 - -
tRISE Rise time VDD=3.0V, load=20pF - 2.5 - ns
VDD=5.0V, load=20pF - 1.5 -
tFALL Fall time VDD=3.0V, load=20pF - 2.0 - ns
VDD=5.0V, load=20pF - 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
Note:
  1. 1.Pin group A (PA[7:0]), pin group B (PB[7:0]). The combined continuous sink/source current for all I/O ports should not exceed the limits.