Datasheet

DS1705/DS1706
4 of 12
PUSH-BUTTON RESET CONTROLLED BY
NMI
AND WDS Figure 3
TIMING DIAGRAM: PUSHBUTTON RESET Figure 4
NON-MASKABLE INTERRUPT CIRCUIT EXAMPLE Figure 5
V
SENSE
=
R2
R2 R1
X 1.25 V
MAX
=
TP
SENSE
V
V
X V
CC
Example: V
SENSE
= 4.50V at the trip point
V
CC
= 3.3V
10 kΩ = R2
Therefore:
25.1
50.4
X 3.3 = 11.88V maximum
4.5 =
10
k
10k R1

X 1.25 R1 = 26 kΩ