DS1238A Dallas, DS1238A Datasheet - Page 6

• Manufacturer Part Number: DS1238A
• Description: MicroManager
• Manufacturer: Dallas

NON-MASKABLE INTERRUPT Figure 5
NMI
V
MAXVOLTAGE =
Example 1: 5-Volt Supply, R2 = 10k Ohms,
V
4.8 =
SENSE
SENSE
FROM IN INPUT Figure 6
R1
=
= 4.8 Volts
10k
R1
10k
R2
R2
x 1.27 R1 = 27.8k Ohm
x 1.27
V
1.27
SENSE
x 5.0 = VMAX
6 of 13
Example 2: 12-Volt Supply, R2 = 10k Ohms,
V
9.0 =
V
SENSE
MAX
=
R1
= 9.0 Volts
10k
1.27
9.00
10k
x 5.0 = 35.4 Volts
x 1.27 R1 = 60.9k Ohm
DS1238A