900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf






etcTI

SM72240 Datasheet Preview

SM72240 Datasheet

Microprocessor Reset

No Preview Available !

SM72240
www.ti.com
SNIS154C – JANUARY 2011 – REVISED APRIL 2013
SM72240 SolarMagic 5-Pin Microprocessor Reset Circuit
Check for Samples: SM72240
FEATURES
1
2 Renewable Energy Grade
• Precise monitoring of 5V supply voltages
• Fully specified over temperature
40°C to +125°C
• 100 ms minimum Power-On Reset pulse width,
190 ms typical:
– Active-Low RESET Open Drain Output
• RESET Output valid for VCC 1V
• Low Supply Current, 6µA typical
• Power supply transient immunity
• Compatible with MAX811/812 applications
APPLICATIONS
• Microprocessor Systems
• Computers
• Controllers
• Intelligent Instruments
• Portable/Battery-Powered Equipment
DESCRIPTION
The SM72240 microprocessor supervisory circuit
monitors the power supplies in microprocessor and
digital systems. It provides a reset to the
microprocessor during power-up, power-down,
brown-out conditions, and manual reset.
The SM72240 asserts a reset signal whenever the
supply decreases below the factory-programmed
reset threshold. Reset will be asserted for at least
100ms even after VCC rises above the reset
threshold.
The SM72240 has an active-low open-drain RESET
output.
The SM72240 is suitable for monitoring 5V. With a
low supply current of only 6µA, the SM72240 is ideal
for use in portable equipment. The SM72240 is
available in the 5-pin SOT-23 package.
Typical Application Circuit
VCC
PUSHBUTTON
SWITCH
VCC
SM72240
MR
RESET
GND
VCC
RL
PP
RESET
INPUT
GND
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2011–2013, Texas Instruments Incorporated




etcTI

SM72240 Datasheet Preview

SM72240 Datasheet

Microprocessor Reset

No Preview Available !

SM72240
SNIS154C – JANUARY 2011 – REVISED APRIL 2013
Connection Diagram
GND 1
5 VCC
GND 2 SM72240
RESET 3
4 MR
Figure 1. 5-Pin SOT-23 Package
See Package Number DBV
www.ti.com
Pin
Name
1
GND
2
GND
3
RESET
4
MR
5
VCC
Block Diagram
VCC
PIN DESCRIPTIONS
Function
Ground reference
Ground reference, device substrate, connect to ground.
Active-low output. RESET remains low while VCC is below the reset threshold voltage, and for 190
ms after VCC rises above the reset threshold voltage.
Active-low input. Reset is asserted whenever this pin is pulled low and remains asserted for 190 ms
after the MR pin goes high. May be left open.
Supply Voltage (+5V, nominal)
Figure 2. SM72240 Block Diagram
Reset Comparator
22k
+
Reset Logic
-
and One-Shot
Low Line
Timer
Comparator
RESET
Manual Reset
Comparator
MR
+
-
1.225V
Reference
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
2
Submit Documentation Feedback
Product Folder Links: SM72240
Copyright © 2011–2013, Texas Instruments Incorporated



Part Number SM72240
Description Microprocessor Reset
Maker etcTI
Total Page 3 Pages
PDF Download

SM72240 Datasheet PDF





Similar Datasheet

1 SM72240 Microprocessor Reset
etcTI





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy