Low Power Self-Refresh Mode Option
/RE
0,2
tRP2
A
0-10
tMSU
tMH
/CAL
0-3, P
tMSU
tMH
/F, W/R,
/WE, /S
Don’t Care or Indeterminate
NOTES: 1. EDRAM self refreshes as long as /RE remains low. (Low Power Self Refresh part only).
When using the Low Power Self Refresh mode the following operations must be performed:
2.
If row addresses are being refreshed in an evenly distributed manner over the refresh interval using /F refresh cycles, then at least one
/F refresh cycle must be performed immediately after exit from the Low Power Self Refresh Mode. If row addresses are being refreshed
in any other manner (/F burst or /RE distributed or burst), then all rows must be refreshed immediately before entry to and immediately
after exit from the Low Power Self Refresh.
2-92
RAMTRON [ RAMTRON INTERNATIONAL CORPORATION ]
