April 2008
rev 1.5
ASM161/ASM162
Application Information
Glitch Resistance
The ASM161/162 are relatively immune to short duration
negative-going V
CC
transients/glitches. A V
CC
transient
that goes 100mV below the reset threshold and lasts 20s
or less will not typically cause a reset pulse.
Valid Reset with V
CC
under 1.1V
To ensure that logic inputs connected to the ASM162
RESET pin are in a known state when V
CC
is under 1.1V,
a 100kΩ pull-down resistor at RESET is needed. The
value is not critical.
This scheme does not work with the open-drain outputs
of ASM161.
Absolute Maximum Ratings
Parameter
Pin Terminal Voltage with Respect to Ground
V
CC
RESET, RESET and MR
Input Current at V
CC
and MR
Rate of Rise at V
CC
Power Dissipation (T
A
= 70°C)
Operating Temperature Range
Storage Temperature Range
Lead Temperature (soldering, 10 sec)
ESD rating
HBM
MM
2
200
KV
V
-40
-65
-0.3
-0.3
6.0
V
CC
+ 0.3
20
100
320
85
160
300
V
V
mA
V/µs
mW
°C
°C
°C
Min
Max
Unit
Note: These are stress ratings only and functional operation is not implied. Exposure to absolute maximum ratings for prolonged time periods may
affect device reliability.
µP Supervisory Circuit
Notice: The information in this document is subject to change without notice.
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