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ASM1832 Datasheet(PDF) 6 Page - Alliance Semiconductor Corporation

Part No. ASM1832
Description  3.3V UP Power Supply Monitor and Reset Circuit
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Manufacturer  ALSC [Alliance Semiconductor Corporation]
Direct Link  http://www.alsc.com
Logo ALSC - Alliance Semiconductor Corporation

ASM1832 Datasheet(HTML) 6 Page - Alliance Semiconductor Corporation

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ASM1832
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Notice: The information in this document is subject to change without notice
3.3V µP Power Supply Monitor and Reset Circuit
rev 1.5
February 2005
Notes
1. RESET remains within 0.5V of VCC on power-down until VCC falls below 2V. RESET remains within 0.5V of ground on power-down until VCC
falls below 2.0V.
Watchdog Timeout Period
tTD
TD = VCC
500
1200
2000
ms
Watchdog Timeout Period
tTD
TD Floating
250
610
1000
ms
Output Voltage
VOH
I=-500µA, VCC < 2.7.V Note
1
VCC - 0.3V
VCC - 0.1V
V
Output Current
IOH
Output = 2.4V, VCC >=2.7V
350
µA
Output Current
IOL
Output = 0.4V, VCC >=2.7V
10
mA
Input Leakage
IIL
-1.0
1.0
µA
RESET Low Level
VOL
Note 1
0.4
V
Internal Pull-up Resistor
PBRST pin
40
k
Operating Current
ICC1
Outputs open, VCC <= 3.6V
and all inputs at VCC or GND
20
µA
Input Capacitance
CIN
5pF
Output Capacitance
COUT
7pF
PBRST Manual Reset
Minimum Low Time
tPB
PBRST = VIL
20
ms
Reset Active Time
tRST
250
610
1000
ms
ST Pulse Width
tST
Must not exceed tRD mini-
mum. Watchdog cannot be
disabled.
20
ns
VCC Fail Detect to RESET or
RESET
tRPD
Pulses < 2 µs at VCCTP min-
imum will not cause reset
58
µs
VCC Slew Rate
tF
20
µs
PBRST Stable LOW to
RESET and RESET Active
tPDLY
20
ms
VCC Detect to RESET or
RESET inactive
tRPU
trise=5µs
250
610
1000
ms
VCC Slew Rate
tR
0ns
Parameter
Symbol
Conditions
Min
Typ
Max
Unit


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