SGM706
Low-Cost, Microprocessor Supervisory Circuit
GENERAL DESCRIPTION
The SGM706 microprocessor supervisory circuit reduces
the complexity and number of components required to
monitor power-supply and monitor microprocessor activity. It significantly improves system reliability and accuracy compared to separate ICs or discrete components.
The SGM706 provides power-supply monitoring circuitry that generates a reset output during power-up, power-down and brownout conditions. The reset output remains operational with V CC  as low as 1V. Independent watchdog monitoring circuitry is also provided. This is activated if the watchdog input has not been toggled within 1.6 seconds.
In addition, there is a 1.25V threshold detector for power-fail warning, low-battery detection, or monitoring an additional power supply. An active-low manual-reset input (MR ) is also included.
The SGM706 is available in Green SOIC-8 package. It operates over an ambient temperature range of -40℃ to +85℃.
FEATURES
z
Precision Supply-Voltage Monitor 4.65V for SGM706-L 4.40V for SGM706-M 4.0V for SGM706-J 3.08V for SGM706-T 2.93V for SGM706-S 2.63V for SGM706-R
z  Guaranteed RESET  Valid at V CC  = 1V z  200ms Reset Pulse Width
z
Debounced TTL/CMOS-Compatible Manual-Reset Input
z  Independent Watchdog Timer (1.6sec) Timeout z  Voltage Monitor for Power-Fail or Low-Battery Warning z  -40℃ to +85℃ Operating Temperature Range z
Green SOIC-8 Package
APPLICATIONS
Computers Controllers
Intelligent Instruments Automotive Systems Critical µP Power Monitoring
REV. A. 1
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SGM706                                    Supervisory Circuit
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PACKAGE/ORDERING INFORMATION
MODEL
RESET
THRESHOLD (V)
PACKAGE DESCRIPTION
ORDERING NUMBER  PACKAGE MARKING PACKAGE OPTION  4.65 SOIC-8 SGM706-LYS8G/TR SGM706-LYS8 Tape and Reel, 25004.40
SOIC-8 SGM706-MYS8G/TR SGM706-MYS8 Tape and Reel, 25004.0 SOIC-8 SGM706-JYS8G/TR SGM706-JYS8 Tape and Reel, 25003.08 SOIC-8 SGM706-TYS8G/TR SGM706-TYS8 Tape and Reel, 25002.93 SOIC-8 SGM706-SYS8G/TR SGM706-SYS8 Tape and Reel, 2500SGM706
2.63
SOIC-8
SGM706-RYS8G/TR
SGM706-RYS8
Tape and Reel, 2500
NOTE: Order number is defined as the follow:
ORDER NUMBER
SGM 706- X  Y  X  G / TR
Package Type
Tape and Reel S8        SOIC-8
Operating Temperature Range
Y        -40℃ to +85℃
RESET THRESHOLD
L: 4.65V M:4.40V J: 4.0V T: 3.08V S: 2.93V R: 2.63V
Green product
CAUTION
This integrated circuit can be damaged by ESD if you don’t pay attention to ESD protection. SGMICRO recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
SGMICRO reserves the right to make any change in circuit design, specification or other related things if necessary without notice at any time. Please contact SGMICRO sales office to get the last datasheet.
ABSOLUTE MAXIMUM RATINGS
(Typical values are at T A  = +25℃, unless otherwise noted.) Terminal Voltage (with respect to GND)
V CC ....................................................................... -0.3V to 6.0V All -0.3V to (V CC  + 0.3V) Input Current, V CC ...........................................
................... 20mA Output Current, (all outputs).............................................. 20mA  Operating -40℃ to +85℃ 150℃ -65℃ to +150℃ Lead Temperature (soldering, 10sec)............................... 260℃ ESD Susceptibility
<.300V
NOTE:
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute Maximum rating conditions for extended periods may affect device reliability.
SGM706                                    Supervisory Circuit
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TYPICAL OPERATION CIRCUIT
SGM706                                    Supervisory Circuit
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SG Micro Limited
PIN CONFIGURATION  (TOP VIEW)
SOIC-8
V CC MR GND PFI
WDI WDO PFO
connect下载RESET
PIN DESCRIPTION
SGM706                                    Supervisory Circuit
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SG Micro Limited
ELECTRICAL CHARACTERISTICS
(V CC = 4.75V to 5.5V for SGM706-L; V CC = 4.5V to 5.5V for SGM706-M; V CC = 4.07V to 5.5V for SGM706-J; V CC = 3.14V to 5.5V for SGM706-T; V CC = 2.95V to 5.5V for SGM706-S; V CC = 2.68V to 5.5V for SGM706-R; T A  = -40°C to +85°C, unless otherwise noted.)
SGM706                                    Supervisory Circuit
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SG Micro Limited
BLOCK DIAGRAM
PFI
V CC
* 4.65V for SGM706-L  4.40V for SGM706-M  4.0V for SGM706-J  3.08V for SGM706-T  2.93V for SGM706-S  2.63V for SGM706-R
MR

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