Communication module and master-slave communication device

The invention provides a communication module and a master-slave communication device, and relates to the technical field of circuit communication. The communication module is used for communication between the host and the slave; the communication module comprises an isolation unit and a charging and discharging unit; one end of the isolation unit is connected with the clock signal output end of the host, and the other end of the isolation unit is connected with the power input end of the slave and one end of the charging and discharging unit. The clock signal output end of the host is connected with the clock signal input end of the slave; the current value corresponding to the signal output by the clock signal output end is greater than the working current of the slave; one end of the charging and discharging unit is connected with the power input end of the slave; the communication module further comprises a data communication unit, and the two ends of the data communication unit are connected with the da