sgm811-zxn5 sg-micro, sgm811-zxn5 Datasheet

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sgm811-zxn5

Manufacturer Part Number
sgm811-zxn5
Description
Microprocessor Supervisory With Manual Reset Input
Manufacturer
sg-micro
Datasheet
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
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
V
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
TYPICAL OPERATION CIRCUIT
CC
as low as 1 V. The SGM811 provides an active low reset
SGM811
SGM812
provide
SG Micro Limited
www.sg-micro.com
a
reset
output
MR
during
SGM811
GND
V
CC
RESET
power-up,
100KO
FEATURES
− Superior Upgrade for MAX811/MAX812 and
− Specified over Temperature
− Low Power Consumption (17 μA Typ)
− Precision Voltage Monitor: 2.5V,3 V, 3.3 V, 5 V
− Reset Assertion Down to 1 V V
− 160 ms Min Power-On Reset
− Manual Reset Input
− Compact 4-Pin SOT143 and 5-Pin SOT23 Packages
PIN CONFIGURATIONS(TOP VIEW)
Microprocessor Supervisory
MICROPROCESSOR
RESET
ADM811/ADM812
Options
SYSTEM
Logic Low
Logic High RESET Output (SGM812)
GND
RESET/RESET
RESET/RESET
with Manual Reset Input
V
CC
GND
GND
NC
RESET
1
1
2
2
3
SOT143-4
Output (SGM811)
SOT23-5
CC
3
4
4
5
V
V
MR
MR
CC
CC
REV. A

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sgm811-zxn5 Summary of contents

Page 1

... This holds the microprocessor in a reset state until conditions have stabilized. The RESET output remains operational with V as low The SGM811 provides an active low reset CC signal ( RESET ) while the SGM812 provides an active high signal (RESET) output. ...

Page 2

... SGM811-JXN5 SGM811-T XN5 SGM811-S XN5 SGM811-R XN5 SGM811-Z XN5 SGM811-LXKA4 SGM811-MX KA4 SGM811-JX KA4 SGM811-TX KA4 SGM811-SX KA4 SGM811-RX KA4 SGM811-Z X KA4 SGM812-LXN5 SGM812-M XN5 SGM812-JXN5 SGM812-T XN5 SGM812-S XN5 SGM812-R XN5 SGM812-Z XN5 SGM812-LX KA4 SGM812-MX KA4 SGM812-JX KA4 SGM812-TX KA4 ...

Page 3

... MΩ 2.3 0.8 0.7×V CC 0.25×V CC SGM811/812 ...

Page 4

... Typ = 5 V for L/M/J Models, 3.3 V for T/S Models for R Models, 2.5 V for Z Models; unless otherwise noted.) CC PARAMETER RESET/ RESET OUTPUT VOLTAGE Low (SGM811R/S/T/Z) Low (SGM811L/M/J) Low (SGM811R/S/T/Z/L/M/J) High (SGM811R/S/T/Z) High (SGM811L/M/J) Low (SGM812R/S/T/Z) Low (SGM812L/M/J) High (SGM812 R/S/T/Z/L/M/J) Specifications subject to change without notice. ABSOLUTE MAXIMUM RATINGS (Typical values are 25°C, unless otherwise noted.) ...

Page 5

... Temperature(℃) Maximum Transient Duration Without Causing a Reset Pulse vs. RESET Comparator Overdrive 400 350 300 SGM811L/M/J 250 200 150 100 50 SGM811T/S 100 RESET Comparator Overdrive SGM811/812 = 200mV OD 90 110 130 ...

Page 6

... TYPICAL PERFORMANCE CHARACTERISTICS RESET Output Voltage vs. Supply Voltage Supply Voltage 5V P-P SGM811R SGM811S 200ms/div RESET Output Voltage 6 SGM811/812 ...

Page 7

... This allows time for the power supply and microprocessor to stabilize. The SGM811 provides an active low reset output ( RESET ) while the SGM812 provides an active high output ( RESET ). During power-down of the SGM811, the RESET output ...

Page 8

... SGM811/812 ...

Page 9

... PACKAGE OUTLINE DIMENSIONS SOT143 9 Dimensions Symbol In Millimeters Min Max A 0.890 1.120 A1 0.013 0.100 B 0.760 0.940 B1 0.370 0.510 C 0.085 0.180 D 2.800 3.040 E 1.200 1.400 e1 1.920 BSC e2 0.200 BSC H 2.100 2.640 L 0.55 REF S 0.450 0.600 SGM811/812 ...

Page 10

... SGMICRO is dedicated to provide high quality and high performance analog IC products to customers. All SGMICRO products meet the highest industry standards with strict and comprehensive test and quality control systems to achieve world-class consistency and reliability. For information regarding SGMICRO Corporation and its products, see www.sg-micro.com 10 SGM811/812 Page ...

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