UM813SS Datasheet | Union Semiconductor

Description The UM706x S/UM708x S/UM813x S series are cost effective system power supply supervisory circuits designed to monitor the power supplies in digital systems. The UM706x S provides power-supply monitoring circuitry that generates a reset output during power-up, power-down, and brownout conditions. The reset output remains operational with VCC as low as 1V. Independent watchdog monitoring circuitry is also provided. This is activated if the watchdog input has not been toggled within 1.6 seconds. In addition, there is a 1.25V threshold detector for power-fail warning, low battery detection, or to monitor an additional power supply. An active low debounced manual reset input is also included. The UM708x S is the same as the UM706x S, except an active-high reset is substituted for the watchdog timer. The UM813x S is the same as the UM706x S, except RESET is provided instead _____________ of RESET. All parts are available in a small outline SOP8 package. Applications Features z Applications Using DSPs, Microcontrollers z Wide Operation Voltage Range of 1V to or Microprocessors z Programmable Controls z puters z Embedded Systems z Industrial Equipments z Intelligent Instruments z Wireless munications Systems 5.5V z Correct Logic Output Guaranteed to VCC=1.0V z Precision Supply-Voltage Monitor: 2.63V, 2.93V, 3.08V, 4.38V, 4.63V z 200ms Reset Pulse Width z Independent Watchdog Timer-1.6s Timeout (UM706x S, UM813x S) z Active-High Reset Output (UM708x S, UM813x S) z Voltage Monitor for Power-Fail or Low-Battery Warning z Temperature Range: -40°C to +85°C z Supply Current of 80μA (Typ) Pin Configurations Top View MR 1 VCC 2 GND 3 PFI 4 8 WDO 7 RESET 6 WDI 5 PFO UM706x S XX: Week Code UM706x S SOP8 ________________________________________________________________________ http://.union-ic. Rev.08 Nov.2016 1/17 Pin Configurations UM706x S/UM708x S/UM813x S Top View MR 1 VCC 2 GND 3 PFI 4 8 RESET 7 RESET 6 NC 5 PFO UM708x S XX: Week Code UM708x S SOP8 MR 1 VCC 2 GND...