SGM812 Datasheet PDF - Shengbang Microelectronics
| Part Number | SGM812 | |
| Description | (SGM811 / SGM812) Microprocessor Supervisory | |
| Manufacturers | Shengbang Microelectronics | |
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SGM811/SGM812
Microprocessor Supervisory
with Manual Reset Input
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 1.8V, 2.5V, 3V,
3.3V and 5V 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 240ms. This holds the
microprocessor in a reset state until conditions have
stabilized. The RESET output remains operational with
VCC as low as 1V. 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
SOT-143 and SOT-23-5 packages.
APPLICATIONS
Microprocessor Systems
Controllers
Intelligent Instruments
Automotive Systems
Safety Systems
Portable Instruments
FEATURES
● Superior Upgrade for MAX811/MAX812 and
ADM811/ADM812
● Specified Over Temperature
● Low Power Consumption (13μA TYP)
● Precision Voltage Monitor: 1.8V, 2.5V, 3V, 3.3V
and 5V Options
● Reset Assertion Down to 1V VCC
● 150ms Min Power-On Reset
Logic Low RESET Output (SGM811)
Logic High RESET Output (SGM812)
● Manual Reset Input
● Green SOT-143 and SOT-23-5 Packages
PIN CONFIGURATIONS (TOP VIEW)
SOT-143
GND 1
4 VCC
RESET/RESET 2
3 MR
GND 1
NC 2
RESET/RESET 3
SOT-23-5
5 VCC
4 MR
TYPICAL OPERATION CIRCUIT
VCC
SGM811
VCC
MICROPROCESSOR
SYSTEM
MR RESET
GND
100kΩ
RESET
GND
SG Micro Corp
www.sg-micro.com
REV. B. 4
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SGM811/812
Microprocessor Supervisory
with Manual Reset Input
ABSOLUTE MAXIMUM RATINGS
(Typical values are at TA = +25°C, unless otherwise noted.)
Terminal Voltage (With Respect to Ground)
VCC.............................................................................-0.3V to 6V
All Other Inputs.............................................-0.3V to VCC + 0.3V
Input Current
VCC, MR .............................................................................20mA
Output Current
RESET, RESET .................................................................20mA
Power Dissipation, PD @ TA = +25℃
SOT-23-5.............................................................................0.4W
SOT-143........................................................................... 0.32W
Operating Temperature Range.........................-40℃ to +125℃
Junction Temperature.......................................................150℃
Storage Temperature........................................-65℃ to +150℃
Lead Temperature (Soldering, 10s)...................................260℃
ESD Susceptibility
HBM..................................................................................4000V
MM......................................................................................400V
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.
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 latest datasheet.
PIN DESCRIPTION
NAME
PIN NUMBER
SGM811
SGM812
FUNCTION
SOT-143 SOT-23-5 SOT-143 SOT-23-5
GND
1
1
1
1 Ground
NC 2
2 No Connect.
Active Low Logic Output. RESET remains low while VCC is below
RESET
2
3 — — the reset threshold or when MR is low; RESET then remains low
for at least 150ms after VCC rises above the reset threshold.
Active High Logic Output. RESET remains high while VCC is
RESET —
—
2
3
below the reset threshold or when MR is low; RESET then
remains high for 240ms (typical) after VCC rises above the reset
threshold.
Manual Reset. This active low debounced input will ignore input
MR 3 4 3 4 pulses of 100ns or less (typical) and is guaranteed to accept input
pulses of greater than 10μs. Leave floating when not used.
VCC
4
5
4
5 Power supply voltage that is monitored.
SG Micro Corp
www.sg-micro.com
5
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for SGM812 electronic component. |
| Information | Total 12 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ SGM812.PDF Datasheet ] | |
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