MIC705/706/707/708
ВµP Supervisory Circuit General Description Features 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. 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 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. Applications Automotive systems
Intelligent systems
Critical microprocessor power monitoring
Battery-powered computers
Computers
Controllers Datasheets and support documentation are available on
Micrel’s web site at: www.micrel.com. 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 Micrel, Inc. MIC705/706/707/708 Ordering Information
Part Number Threshold (V) /RESET MIC705MY 4.65 MIC706MY RESET WDI Junction Temperature Range Package в€љ в€љ -40В°C to +85В°C 8-Pin SOIC 4.40 в€љ в€љ -40В°C to +85В°C 8-Pin SOIC MIC707MY 4.65 в€љ в€љ -40В°C to +85В°C 8-Pin SOIC MIC708MY 4.40 в€љ в€љ -40В°C to +85В°C 8-Pin SOIC Pin Configuration MIC705/706 …