ATMEGA8_08 Datasheet, PDF (269/308 Pages) ATMEL Corporation – 8-bit with 8K Bytes In-System Programmable Flash

Figure 157. I/O Pin Input Hysteresis vs. V_CC
ATmega8(L)
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
2.5
I/O PIN INPUT HYSTERESIS vs. V_CC
3
3.5
4
4.5
5
V_CC (V)
85°C
-40°C
25°C
5.5
Figure 158. Reset Pin as I/O – Input Threshold Voltage vs. V_CC (V_IH, I/O Pin Read as “1”)
4
3.5
3
2.5
2
1.5
1
0.5
0
2.5
RESET PIN AS I/O - INPUT THRESHOLD VOLTAGE vs. V_CC
VIH, RESET PIN READ AS '1'
-40°C
85°C
25°C
3
3.5
4
4.5
5
5.5
V_CC (V)
2486T–AVR–05/08
269