Techniques are provided for synchronizing a wakeup schedule for a first module and a wakeup schedule for a CDMA module in a wireless mobile unit operable in a synchronous communication system. In one embodiment, a next CDMA wakeup time is determined. A new wakeup time for the first module can then be synchronized to a next CDMA wakeup time when a next CDMA wakeup time is earlier than a next wakeup time for the first module.