ATTINY25_09 Datasheet, PDF (170/196 Pages) ATMEL Corporation – 8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash

Figure 23-29. Reset Input Threshold Voltage vs. V_CC (VIL, Reset Pin Read As '0')
RES ET INP UT THRES HOLD VOLTAGE vs . _CV_C
VIL, IO PIN READ AS '0'
125 ˚C
2.5
85 ˚C
25 ˚C
-40 ˚C
2
1.5
0.5
0
1.5
2
2.5
3
3.5
4
4.5
5
V_CC (V)
Figure 23-30. Reset Input Pin Hysteresis vs. V_CC
RES ET INP UT THRES HOLD VOLTAGE vs . _CV_C
VIH, IO PIN READ AS '1'
0.25
0.2
0.15
0.1
0.05
0
1.5
2
2.5
3
3.5
4
4.5
5
V_CC (V)
5.5
125 ˚C
85 ˚C
25 ˚C
5.5 -40 ˚C
170 ATtiny25/45/85
7598H–AVR–07/09