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SGM811-ZXKA4 Datasheet(PDF) 1 Page - SG Micro Corp

Part # SGM811-ZXKA4
Description  Microprocessor Supervisory with Manual Reset Input
Download  9 Pages
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Manufacturer  SGMICRO [SG Micro Corp]
Direct Link  http://www.sg-micro.com
Logo SGMICRO - SG Micro Corp

SGM811-ZXKA4 Datasheet(HTML) 1 Page - SG Micro Corp

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SGM811
SGM812
GENERAL DESCRIPTION
The SGM811/SGM812 supervisory circuits monitor the
power supply voltage in microprocessor and digital
systems. The SGM811/SGM812 is designed to monitor
seven different voltages, these voltages have been selected
for the effective monitoring of 2.5V, 3 V, 3.3 V, and 5 V
supply voltage levels.
They
provide
a
reset
output
during
power-up,
power-down and brownout conditions. On power-up, an
internal timer holds reset asserted for 240 ms. This holds
the microprocessor in a reset state until conditions have
stabilized. The
RESET output remains operational with
VCC as low as 1 V. The SGM811 provides an active low reset
signal (
RESET ) while the SGM812 provides an active high
signal (RESET) output.
The SGM811/SGM812 has a manual reset input. The
manual reset function is very useful, especially if the circuit
in which the SGM811/SGM812 is operating enters into a
state that can only be detected by the user. Allowing the
user to reset a system manually can reduce the damage or
danger that could otherwise be caused by an out-of-control
or locked system. The devices come in a 4-pin SOT143
and 5-pin SOT23 packages.
APPLICATIONS
Microprocessor Systems
Controllers
Intelligent Instruments
Automotive Systems
Safety Systems
Portable Instruments
Microprocessor Supervisory
with Manual Reset Input
FEATURES
Superior Upgrade for MAX811/MAX812 and
ADM811/ADM812
Specified over Temperature
Low Power Consumption (17 μA Typ)
Precision Voltage Monitor: 2.5V,3 V, 3.3 V, 5 V
Options
Reset Assertion Down to 1 V VCC
160 ms Min Power-On Reset
Logic Low RESET Output (SGM811)
Logic High RESET Output (SGM812)
Manual Reset Input
Compact 4-Pin SOT143 and 5-Pin SOT23 Packages
PIN CONFIGURATIONS(TOP VIEW)
1
2
3
4
SOT143-4
GND
VCC
RESET/RESET
MR
1
3
4
SOT23-5
GND
VCC
RESET/RESET
5
MR
2
NC
TYPICAL OPERATION CIRCUIT
MICROPROCESSOR
SYSTEM
SGM811
GND
RESET
MR
RESET
GND
VCC
VCC
100KO
Nov 2006
Shengbang Microelectronics Co, Ltd
Tel: 86/451/84348461
www.sg-micro.com


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