LOW LEAKAGE RETENTION REGISTER TRAY

摘要

A particular method includes receiving a retention signal (nret). In response to receiving the retention signal, the method includes retaining state information (q internal, 310) in a non-volatile stage (302) of a retention register (300) and reducing power to a volatile stage (356) of the retention register. The non-volatile stage (302) may be powered by an external voltage source (Vdd ext). The volatile stage may be powered by an internal voltage source (Vddx).