32.13.1 Restriction

When one of the EXNW_MODE is enabled, at least one hold cycle must be programmed for the read/write controlling signal. For that reason, the NWAIT signal cannot be used in Page mode (see Asynchronous Page Mode) nor in Slow Clock mode (see Slow Clock Mode).

The NWAIT signal is assumed to be a response of the external device to the read/write request of the SMC. Then NWAIT is examined by the SMC only in the Pulse state of the read or write controlling signal. The assertion of the NWAIT signal outside the expected period has no impact on SMC behavior.