Circuit provides watchdog for microcontrollers


Posted on Jan 1, 2013

The watchdog circuit in Figure 1 uses a single NAND Schmitt-trigger IC. The circuit is more cost-effective than dedicated, commercially available watchdog ICs. The circuit generates an active-high reset signal upon power-up and remains in a low state as long as the control input receives pulses. Whenever the pulsing at the control input stops, whether the circuit is in a high or a low state, the circuit emits a reset signal.






Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Dc-gain-controlled-video-amplifier
Audio Filter Analyzer
Metal Detector DIY
led lighting for 6v vehicles
9 volt headphone amplifier
switch debounce circuit
A High Power Planar Triode Oscillator Designed by Using FEM Modeling
Power Amplifier OCL 100w With MJ802 MJ4502
quick question about dimmers
16x2 Alphanumeric LCD Interfacing :: AVR Tutorials
The application circuit of TDA7088 FM integrated circuit
Micro Wireless Monitor FM FM transmitter circuit two



Top