ETC811 Micrel, ETC811 Datasheet

ETC811

Manufacturer Part Number

ETC811

Description

(ETC812) Microprocessor Reset Circuits

Manufacturer

Micrel

Datasheet

1.ETC811.pdf (6 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

ETC811LUC

Manufacturer:

ETC

Quantity:

20 000

Company:

Meier Automation Equipment Co., Limited

Part Number:

ETC811SUC

Manufacturer:

ETC

Quantity:

20 000

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General Description

The MIC811 and MIC812 are inexpensive microprocessor

supervisory circuit that monitors 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

The MIC811/812 comes in a 4-pin SOT-143 package.

Typical Application

May 2003

MIC811/812

Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com

has risen above the designed reset threshold level.

Ordering Information

Part Number

MIC811LU

MIC811MU

MIC811JU

MIC811TU

MIC811SU

MIC811RU

MIC812LU

MIC812MU

MIC812JU

MIC812TU

MIC812SU

MIC812RU

V CC

RESET

Features

• Precision voltage monitor for 3V, 3.3V or 5V power

• /RESET remains valid with V

• <15µA 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

supplies

Marking

RESET

Microprocessor Reset Circuits

V CC

Threshold

Voltage

4.63

4.38

4.00

3.08

2.93

2.63

4.63

4.38

4.00

3.08

2.93

2.63

Final Information

MIC811/812

–40°C to +85°C

Temp. Range

Operating

as low as 1.4V

4-lead SOT-143

Package

MIC811/812

Micrel

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