ASM1232LPCMA ALSC [Alliance Semiconductor Corporation], ASM1232LPCMA Datasheet - Page 6

• Manufacturer Part Number: ASM1232LPCMA
• Description: 5V uP Power Supply Monitor and Reset Circuit
• Manufacturer: ALSC [Alliance Semiconductor Corporation]

January 2005
Notes
1. PBRST is internally pulled HIGH to V
2. RESET is an open drain output.
3. RESET remains within 0.5V of V
falls below 2.0V.
4. Must not exceed the minimum watchdog time-out period (t
rev 1.5
Input Leakage
RESET Low Level
Internal Pull-up Resistor
Operating Current (CMOS)
Input Capacitance
Output Capacitance
PBRST Manual Reset
Minimum Low Time
Reset Active Time
ST Pulse Width
V
RESET
V
PBRST Stable LOW to RESET and
RESET Active
V
inactive
V
CC
CC
CC
CC
Fail Detect to RESET or
Slew Rate
Detect to RESET or RESET
Slew Rate
Parameter
Notice: The information in this document is subject to change without notice
5V µP Power Supply Monitor and Reset Circuit
CC
on power-down until V
CC
through a nominal 40kΩ resistor.
Symbol
C
t
t
t
I
t
V
PDLY
C
RPD
RPU
CC1
t
RST
t
I
OUT
t
PB
ST
t
IL
OL
R
F
IN
Note 1
Note 3
Note 1
PBRST = V
Note 4
4.75V to 4.25V
t
4.25V to 4.75V
RISE
TD
CC
). The watchdogcircuit cannot be disabled. To avoid a reset, ST must be strobed.
= 5µs
falls below 2V. RESET remains within 0.5V of ground on power-down until V
Conditions
IL
Min
-1.0
250
300
250
20
20
0
ASM1232LP/LPS
Typ
610
610
40
5
1000
1000
Max
1.0
0.4
30
10
20
5
8
6 of 10
Unit
ms
ms
ms
ms
µA
kΩ
µA
pF
pF
ns
µs
µs
ns
CC
V