The present invention discloses an electrostatic protection method with detection
control circuit and circuit which belongs to electrostatic protection field, and the method comprises the following steps: detect input
voltage on input / output terminal of a
chip internal circuit through a detection circuit, when input
voltage smaller than trigger
voltage set by the detection circuit, it is judged to be working voltage, and working current corresponding to the working voltage flows into the
chip internal circuit through input / out terminal of the
chip internal circuit directly, and the trigger voltage is smaller than minimum
breakdown voltage of the chip internal circuit; when input voltage on input / output terminal of a chip internal circuit is detected bigger than or equal to the trigger voltage, it is judged to be
electrostatic discharge voltage, and the detection circuit controls
electrostatic discharge current corresponding to the
electrostatic discharge voltage bleed through a bleeder circuit, thereby the input voltage is clamped in safe
voltage range and plays the role of internal
circuit protection. The present invention realizes clamp or normal work through detecting input voltage and control bleed.