MIC708TMY Datasheet, PDF (1/10 Pages) Micrel Semiconductor – μP Supervisory Circuit

MIC706P/R/S/T, MIC708R/S/T
µP Supervisory Circuit
General Description
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.
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.
Datasheets and support documentation are available on
Micrel’s web site at: www.micrel.com.
Features
• Maximum supply current: 30µA
• 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
Applications
• Laptop and desktop computers
• Intelligent systems
• Critical microprocessor power monitoring
• Printers
• Controllers
Typical Application
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel [phone] • fax + 1 [phone] • http://www.micrel.com
May 28, 2014
Revision 2.0