MIC8115_05 Datasheet, PDF (1/6 Pages) Micrel Semiconductor – Microprocessor Reset Circuit

MIC8115
MIC8115
Microprocessor Reset Circuit
Micrel
General Description
The MIC8115 is an inexpensive microprocessor supervisory
circuit that monitors power supplies in microprocessor based
systems.
The function of this device is to assert a reset if the power
supply drops below a designated reset threshold level or
/MR is forced low.
The MIC8115 has an active low /RESET output. The reset
output is guaranteed to remain asserted for a minimum of
1100ms after V_CC has risen above the designated reset
threshold level. The MIC8115 comes in a 4-pin SOT-143
package.
Features
• Precision voltage monitor for 3.3V power supplies
• Specifically tailored to the AMD Elan SC500 Series
• /RESET remains valid with V_CC as low as 1V
• 5µA typical supply current
• 1100ms minimum reset pulse width
• Manual reset input
• Available in 4-Pin SOT-143 Package
Applications
• Portable equipment
• Intelligent instruments
• Critical microprocessor power monitoring
• Printers/computers
• Embedded controllers
Ordering Information
Part Number Marking Operating Temp. Range
MIC8115TU
NT
–40°C to +85°C
MIC8115TUY
NT
–40°C to +85°C
Package
4-lead SOT-143
4-lead SOT-143
Pb-Free
No
Yes
Typical Application
VCC
VCC
MIC8115
RESET
MR
VCC
µP
RESET
MIC8115 Typical Application
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 [phone] • fax + 1 [phone] • http://www.micrel.com
July 2005
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MIC8115