When using a chip resetter, you need to pay attention to the following points:
Reset pulse width requirements: When designing a reset circuit, you need to ensure that the reset pulse width meets the requirements of the processor. For example, the reset pulse width of the RS706 reset chip is between 100 and 350 milliseconds, and the design needs to be selected in combination with the specific requirements of the processor.
Power supply voltage monitoring: Reset chips usually have a power supply voltage monitoring function to ensure that the system can be reset correctly when powered on. For example, the operating voltage range of the RS706 reset chip is 1.0V to 5.5V, and the power supply voltage monitoring thresholds include 2.63V, 2.93V, 3.08V, and 4.00V.
Drive capability of the reset signal: If the reset signal trace is too long, it is easy to introduce interference, resulting in insufficient reset signal drive capability. This problem can be solved by adding a driver (such as RS1G125).
Synchronous and asynchronous reset signals: In chip design, reset signals can be divided into synchronous reset and asynchronous reset. Asynchronous reset is more commonly used because it does not increase resource consumption and timing delay.
Reset circuit type selection: Common reset circuits include resistor + capacitor reset, resistor + capacitor + diode reset and dedicated reset chip, etc. Choosing a suitable reset circuit requires considering factors such as cost, accuracy and reset time according to specific needs.
