MIC811TUY Micrel Semiconductor, MIC811TUY Datasheet

no-image

MIC811TUY

Manufacturer Part Number
MIC811TUY
Description
Manufacturer
Micrel Semiconductor
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MIC811TUY
Manufacturer:
MIC
Quantity:
1 200
Part Number:
MIC811TUY
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
Part Number:
MIC811TUYTR
Manufacturer:
MICREL/麦瑞
Quantity:
20 000
General Description
The MIC811 and MIC812 are inexpensive microprocessor
supervisory circuits that monitor power supplies in micropro-
cessor based systems.
The function of this device is to assert a reset if either the
power supply drops below a designated reset threshold
level or /MR is forced low. Several different reset threshold
levels are available to accommodate 3V, 3.3V or 5V powered
systems.
The MIC811 has an active low /RESET output, while the
MIC812 offers an active high RESET output. The reset output
is guaranteed to remain asserted for a minimum of 140ms
after V
Having a push-pull output stage, the MIC811/812 does not
require a pull-up resistor at the output. The MIC811/812
comes in a 4-pin SOT-143 package.
If a microprocessor voltage supervisor with an open-drain
output stage is needed, see MIC6315.
Typical Application
September 2005
MIC811/812
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
CC
has risen above the designed reset threshold level.
MR
MIC81 1
V CC
RESET
1
Features
• Precision voltage monitor for 3V, 3.3V or 5V power sup-
• /RESET remains valid with V
• 5µA typical supply current
• 140ms minimum reset pulse width available
• Manual reset input
• Available in 4-pin SOT-143 package
Applications
• Portable equipment
• Intelligent instruments
• Critical microprocessor power monitoring
• Printers/computers
• Embedded controllers
V CC
plies
RESET
Microprocessor Reset Circuits
V CC
µP
MIC811/812
CC
as low as 1V
MIC811/812
Micrel

Related parts for MIC811TUY

MIC811TUY Summary of contents

Page 1

MIC811/812 General Description The MIC811 and MIC812 are inexpensive microprocessor supervisory circuits that monitor power supplies in micropro- cessor based systems. The function of this device is to assert a reset if either the power supply drops below a designated ...

Page 2

... MIC811/812 Ordering Information Part Number Standard Pb-Free MIC811LU MIC811LUY MIC811MU MIC811MUY MIC811JU MIC811JUY MIC811TU MIC811TUY MIC811SU MIC811SUY MIC811RU MIC811RUY MIC812LU MIC812LUY MIC812MU MIC812MUY MIC812JU MIC812JUY MIC812TU MIC812TUY MIC812SU MIC812SUY MIC812RU MIC812RUY MIC811/812 Marking Threshold Voltage Standard Pb-Free ...

Page 3

MIC811/812 Pin Configuration Pin Description Pin Number Pin Number MIC811 MIC812 Pin Name N/A N September 2005 GND MIC811 RESET GND MIC812 RESET ...

Page 4

MIC811/812 Absolute Maximum Ratings Terminal Voltage (V ) .................................–0.3V to +6.0V CC Input Current (V , /MR) ............................................ 20mA CC Output Current (/RESET, RESET) .............................. 20mA Lead Temperature (soldering, 10 sec.) ...................... 300°C Storage Temperature (T ) .......................... –65°C to ...

Page 5

MIC811/812 Timing Diagram V CC /MR /RESET Functional Diagram V CC (4) MR (3) September 2005 RST Reset Timing Diagram + - Reset RESET Threshold (V) GENERATOR GND (1) 5 Micrel t RST RESET (2) RESET (MIC812) ...

Page 6

MIC811/812 Applications Information Microprocessor Reset The /RESET (or RESET) pin is asserted whenever V below the reset threshold voltage. The /RESET pin remains asserted for a period of 140ms after V reset threshold voltage. The reset function ensures that the ...

Page 7

MIC811/812 Package Information 0.950 (0.0374) TYP 3.05 (0.120) 2.67 (0.105) 0.800 (0.031) TYP 0.400 (0.016) TYP 3 PLACES MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL The information furnished by Micrel in this ...

Related keywords