ASM161JCUS/T ALSC [Alliance Semiconductor Corporation], ASM161JCUS/T Datasheet - Page 2

• Manufacturer Part Number: ASM161JCUS/T
• Description: uP Supervisory Circuit
• Manufacturer: ALSC [Alliance Semiconductor Corporation]

Block Diagram
Pin Configuration
RESET is open drain
Pin Description
V
October 2003
rev 1.0
MR
CC
ASM161
4
3
* Non-retriggerable, edge
1
2
3
4
triggered manual reset
-
Debounce
Voltage
Divider
MR
Pin #
RESET
ASM162
GND
+
-
1
2
3
4
-
1
2
Bandgap
Reference
GND
ASM161
SOT-143
Pin Name
Notice: The information in this document is subject to change without notice
1
RESET
RESET
GND
V
MR
CC
ASM161/162
Reset Circuit
* Edge Trigger
Ground.
Active-LOW, open-drain reset output. RESET remains LOW while V
reset threshold and for 800ms minimum after V
An external pull-up resistor is needed.
Active HIGH reset output. RESET remains HIGH while V
threshold and for 800ms after V
Manual reset input. A negative going edge transition on MR asserts reset. Reset
remains asserted for one reset time-out period (800 ms min). This active-LOW
input has an internal pull-up resistor. It can be driven from a TTL or CMOS logic line
or shorted to ground with a switch. Leave open if unused.
Power supply input voltage.
4
3
V
µP Supervisory Circuit
MR
CC
2
RESET (ASM161)
RESET (ASM162)
CC
RESET
GND
rises above the reset threshold.
Description
1
2
ASM162
SOT-143
CC
ASM161
Circuit
Reset
ASM161 / ASM162
rises above the reset threshold.
CC
V
CC
is below the reset
4
4
3
V
MR
CC
CC
R
2
PU
is below the
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