3.3V Voltage Supervisor with Manual Reset,
Watchdog Timer and Dual Reset Outputs General Description Features The MIC1832 is a low-current microprocessor supervisor
for monitoring 3.3V and 3V systems. The device features
logic-selectable (TOL) reset thresholds of 10% or 20% of
3.3V; a pushbutton reset input; a watchdog timer with
three-state selectable (TD) timeout periods of 150ms,
600ms, or 1.2s; a fixed reset timeout period of 250ms
(min); and active-low open-drain reset (/RST) and activehigh push-pull reset (RST) outputs. The /RST output
maintains a valid reset condition for VCC as low as 1.4V.
The MIC1832 asserts a reset condition if the supply
voltage drops below the reset threshold, the pushbutton
reset is asserted low, or the watchdog timer does not see
a high-to-low transition on the watchdog timer input within
the watchdog timer period. A reset condition is held for the
reset timeout period of 250ms (min) after the pushbutton
input is released, after the supply voltage increases above
the reset threshold voltage, or after the watchdog has
initiated a reset.
The MIC1832 is a drop-in replacement for the DS1832. It
operates over the вЂ“40В°C to +85В°C temperature range and
is available in Pb-Free 8-pin SOIC and PDIP packages.
Data sheets and support documentation can be found on …