Datasheet Microchip MIC708MY — 数据表

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 …

MIC706P/R/S/T, MIC708R/S/T
ВµP Supervisory Circuit General Description Features The MIC706 and MIC708 are inexpensive microprocessor
supervisory circuits that monitor power supplies in 3.0V
and 3.3V microprocessor-based systems. The circuit
functions include a watchdog timer, microprocessor reset,
power-failure warning, and a debounced manual reset
input. Maximum supply current: 30ВµA Debounced manual reset input is TTL/CMOS
compatible Reset pulse width: 200ms Watchdog timer: 1.6s (MIC706) Precision supply voltage monitor Easy power-fail warning or low-battery detect The MIC706 offers a watchdog timer function, while the
MIC708 has an active-high reset output in addition to the
active-low reset output.
The R, S, and T versions are similar in all respects except
for supply voltage reset threshold levels. The threshold
levels are 2.63, 2.93, and 3.08V, respectively. When the
supply voltage drops below the reset threshold level,
/RESET (and RESET for the MIC708) is asserted.
The MIC706P is identical to the MIC706R, except that the
Reset output is asserted high. Applications Laptop and desktop computers
Intelligent systems
Critical microprocessor power monitoring
Printers
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 May 28, 2014 Revision 2.0 Micrel, Inc. MIC706P/R/S/, MIC708R/S/T Ordering Information
Part Number Threshold (V) MIC706PMY 2.63 MIC706RMY 2.63 MIC706SMY /RESET RESET WDI Junction Temperature Range Package в€љ в€љ –40В°C to +85В°C 8-Pin SOIC в€љ в€љ –40В°C to +85В°C 8-Pin SOIC 2.93 в€љ в€љ –40В°C to +85В°C 8-Pin SOIC MIC706TMY 3.08 в€љ в€љ –40В°C to +85В°C 8-Pin SOIC MIC708RMY 2.63 в€љ в€љ –40В°C to +85В°C 8-Pin SOIC MIC708SMY 2.93 в€љ в€љ –40В°C to +85В°C 8-Pin SOIC MIC708TMY 3.08 в€љ в€љ –40В°C to +85В°C 8-Pin SOIC Pin Configuration MIC706 …