Resets & Supervisors Overview Datasheet by STMicroelectronics

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Resets and supervisors
Portfolio overview
Run your application with carefree supervision
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and application notes
Reset is a mandatory function
to ensure proper wake-up of
complex systems but also
reboot in case of failing or
frozen applications. With
the democratization of
microprocessing units, there
is an ever-increasing need for
resets and supervisors.
ST’s portfolio includes:
- basic or multi-voltage resets
- single or dual pushbutton
Smart Resets™
- more advanced supervisors
with watchdog, early power-fail
detection, battery switchover
functions
KEY BENEFITS
• Software freeze recovery
• Power failure protection
• Increased end-product robustness
• Increased end-user perception of
quality
APPLICATIONS
• Portable consumer devices
• Computers
• Video games
• Toys, electronic games
• Set-top boxes, Blu-ray players
• Fitness/wellness equipment
• White goods
• Home automation
• Metering
• Industrial equipment
• Point of sales
• Medical equipment
• Healthcare devices
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VOLTAGE DETECTORS
Part number Package Output Reset threshold (V) Reset timeout
delay (s) Supply current (µA) Operating
temperature (°C)
STM1061 SOT23-3 Open drain, active low 1.6 to 5.5 n/a 0.9 -40 to 85
STM1831 SOT23-5 Open drain, active low 1.6 to 5.7 adjustable 0.8 -40 to 85
SMART RESETS
Part number Package Manual pushbuttons Reset pulse width (ms) Reset setup delay
(s) Other Operating
temperature (°C)
STM6519 DFN6 1 1.28 to 360 0.5 to 10 Test mode -40 to 85
STM6524 DFN6 2 1.28 to 360 0.5 to 10 Test mode -40 to 85
WATCHDOGS
Part number Package Timeout period Output type Chip enable Supply current (µA) Operating
temperature (°C)
STWD100 SOT23-5
SC70-5
3.4 ms
6.3 ms
102 ms
1.6 s
Open drain or push pull Yes 13 -40 to 85
Note : Automotive grade availability on request
SUPERVISORS
Part number Package Output Watchdog
input
Watchdog
output
Manual reset
input
Power
fail in/
out
Battery
switch over
Chip
enable
gating
Battery
freshness
seal
Vcc switch
output
STM6321 SOT23-5 Push pull, active high
Open drain, active low X
STM6822 SOT23-5 Open drain, active low X X
STM706 SO8 Push pull, active low X X X X
STM795 SO8 Open drain, active low X X X
STM819 SO8 Push pull, active low X X X X
RESETS
Part
number Package Monitored
voltages Output Reset pulse
width (ms)
Manual
reset input
Delayed
manual
reset input
Reset 1
threshold
(V)
Reset 2
threshold
(V)
Reset 3
threshold
(V)
Reset 4
threshold
(V)
Reset 5
threshold
(V)
STM6315 SOT143 1 Open drain,
active low 1.5 to 1680 Yes 2.63 to
4.63
STM809 SOT23-3 1 Push pull,
active low 210 2.63 to
4.63
STM6779 SOT23-6 2 Open drain,
active low 210 Yes 1.58 to
4.63 Adjustable
STM6710 SOT23-6 4 Open drain,
active low 200 Optional 5,
adjustable 3.3 1.8 to 2.5 1.8,
adjustable
STM6904 TSSOP8 4 Open drain,
active low 210, 420 Yes 2.87 to
3.08 1.05 to 2.33 Adjustable Adjustable
STM6905 TSSOP8 5 Open drain,
active low 210 Yes 2.87 to
3.08 1.05 to 2.33 Adjustable Adjustable Adjustable
© STMicroelectronics - November 2013 - Printed in United Kingdom - All rights reserved
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For more information on ST products and solutions, visit www.st.com
Order code: FLCAREFREE1113

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