Charge and discharge control circuit for controlling charging and discharging of battery

A charge and discharge control circuit for preventing malfunction when a switch that controls charging and discharging of a secondary battery is turned on or off, the charge and discharge control circuit comprising:

• an anomaly detection circuit detecting a charging prohibition anomaly state or a discharging prohibition anomaly state to generate an anomaly detection signal, and detecting resolution of the charging prohibition anomaly state or the discharging prohibition anomaly state to stop generation of the anomaly detection signal;
• a control circuit configured to generate a switch control signal having a first value for turning off the switch or the switch control signal having a second value for turning on the switch based on the anomaly detection signal;
• and
• a state transition detection circuit generating a first count request signal based on a change in a value of the switch control signal and stopping generation of the first count request signal after a first time interval from occurrence of the first count request signal,
• wherein, during the generation of the first count request signal, the control circuit holds the switch control signal to a value obtained on the occurrence of the first count request signal.