The inherent startup time of the embedded Flash cannot provide a fast startup of the system.
If system fast startup time is not required, the first instruction after a Wait mode exit can be located in the embedded Flash. Under these conditions, prior to entering Wait mode, the Flash controller must be programmed to perform access in 0 wait-state (refer to the embedded Flash controller section).
The procedure and conditions to enter Wait mode and the circuitry to exit Wait mode are strictly the same as fast startup (see "Fast Startup").