ATMEGA8U2_14 Datasheet, PDF (280/310 Pages) ATMEL Corporation – 125 Powerful Instructions – Most Single Clock Cycle Execution

ATmega8U2/16U2/32U2
Figure 27-14. USB DP HI Pull-Up Resistor Current vs. USB Pin Voltage
1600
1400
1200
1000
800
600
400
200
0
0
0.5
1
1.5
2
2.5
3
V_USB (V)
25 °C
-40 °C
85 °C
3.5
27.6 Pin Threshold and Hysteresis
Figure 27-15. I/O Pin Input Threshold Voltage vs. V_CC (V_IH, I/O Pin read as ‘1’)
1.7
-40 °C
25 °C
85 °C
1.5
1.3
1.1
0.9
0.7
2.5 2.8 3.1 3.4 3.7
4
4.3 4.6 4.9 5.2 5.5
V_CC (V)
7799D–AVR–11/10
280