UM706xS 具有看门狗输入，手动复位功能，推挽式/RESET输出的微处理器复位电路
功能特点
微处理器监控 电源管理
The UM706xS/UM708xS/UM813xS series are cost effective system power supply supervisory circuits designed to monitor the power supplies in digital systems.
The UM706xS 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 UM708xS is the same as the UM706xS, except an active-high reset is substituted for the watchdog timer. The UM813xS is the same as the UM706xS, except RESET is provided instead of RESET. All parts are available in a small outline SOP8 package.
参数指标
- Wide Operation Voltage Range of 1V to 5.5V
- Correct Logic Output Guaranteed to VCC=1.0V
- Precision Supply-Voltage Monitor: 2.63V(UM706RS), 2.93V(UM706SS), 3.08V(UM706TS), 4.38V(UM706MS), 4.63V(UM706LS)
- 200ms Reset Pulse Width
- Independent Watchdog Timer-1.6s Timeout (UM706xS, UM813xS)
- Active-High Reset Output (UM708xS, UM813xS)
- Voltage Monitor for Power-Fail or Low-Battery Warning
- Temperature Range: -40°C to +85°C
- Supply Current of 80μA (Typ.)
应用领域
- Applications Using DSPs, Microcontrollers or Microprocessors
- Programmable Controls
- Computers
- Embedded Systems
- Industrial Equipments
- Intelligent Instruments
- Wireless Communications Systems
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