MIC706P

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 Debounc...