When is the RAME bit in the System Control Register(SYSCR) used?
The RAME bit is used to protect the data in the on-chip RAM.The data in the on-chip RAM might be destroyed by hardware standby input or reset input, if the CPU's operation is reset asynchronously during writing to the on-chip RAM. If such processing is expected, the data in the on-chip RAM can be protected by prohibiting access to the on-chip RAM by setting the RAME bit.
|SH7052, SH7053, SH7054|
|SH7047, SH7049, SH7105, SH7107, SH7109|
|SH7046, SH7148, SH7101, SH7048, SH7104, SH7106, SH7108|