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MIC705_14 Datasheet, PDF (1/10 Pages) Micrel Semiconductor – μP Supervisory Circuit | |||
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MIC705/706/707/708
µP Supervisory Circuit
General Description
The MIC705, MIC706, MIC707, and MIC708 are
inexpensive microprocessor supervisory circuits that
monitor power supplies in microprocessor-based systems.
The circuit functions include a watchdog timer,
microprocessor reset, power-failure warning, and a
debounced manual reset input.
The MIC705 and MIC706 offer a watchdog timer function
while the MIC707 and MIC708 have an active-high reset
output in addition to the active-low reset output.
Supply voltage monitor levels of 4.65V and 4.4V are
available. The MIC705 and MIC707 have a nominal reset
threshold level of 4.65V while the MIC706 and MIC708
have a 4.4V nominal reset threshold level. When the
supply voltage drops below the respective reset threshold
level, /RESET is asserted.
Datasheets and support documentation are available on
Micrelâs web site at: www.micrel.com.
Features
⢠Debounced manual reset input is TTL/CMOS
compatible
⢠Reset pulse width: 200ms
⢠Watchdog timer: 1.6s (MIC705/706)
⢠4.65V or 4.40V precision voltage monitor
⢠Early power-fail warning or low-battery detect
Applications
⢠Automotive systems
⢠Intelligent systems
⢠Critical microprocessor power monitoring
⢠Battery-powered computers
⢠Computers
⢠Controllers
Typical Application
Micrel Inc. ⢠2180 Fortune Drive ⢠San Jose, CA 95131 ⢠USA ⢠tel +1 (408) 944-0800 ⢠fax + 1 (408) 474-1000 ⢠http://www.micrel.com
September 15, 2014
Revision 2.1
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