Philips Semiconductors
System reset with built-in Watchdog timer
Product data
NE56604-42
104
VCC = 5.0 V
Tamb = 25 °C
103
102
10
1.0
10–3
10–2
10–1
1.0
10
CT, CAPACITANCE (µF)
SL01290
Figure 15. Power-on reset hold time vs. CT.
104
VCC = 5.0 V
Tamb = 25 °C
103
102
10
1.0
10–3
10–2
10–1
1.0
10
CT, CAPACITANCE (µF)
Figure 17. Watchdog reset time vs. CT.
SL01307
102
VCC = 5.0 V
Tamb = 25 °C
10
1.0
10–1
10–2
10–3
10–2
10–1
1.0
10
CT, CAPACITANCE (µF)
Figure 16. Watchdog reset time vs. CT.
SL01291
105
VCC = 5.0 V
Tamb = 25 °C
104
103
102
10
1.0
10–1
10–2
10–3
RCT = OPEN
RCT = 2.2 MΩ
RCT = 1.0 MΩ
RCT = 470 kΩ
RCT = 200 kΩ
10–2
10–1
1.0
10
CT, CAPACITANCE (µF)
SL01309
Figure 18. Watchdog monitoring time vs. CT.
2003 Oct 15
8