The instruction ISTNEXT can be used in IST's single step mode or single cycle mode. By using this instruction in single step mode, you can continue to the next step without triggering the start bit. In single cycle mode, the next cycle can be continued.

After using the ISTNEXT instruction, the state transition disable bit M8020 will also be reset to ensure that it can transition to the next state.

After using ISTNEXT, M8020 will be reset to OFF. If M8020 is ON before using ISTNEXT, reset it if necessary.