EM639165
AUTO REFRESH
banks must be in the idle state. Auto-refresh to auto-refresh
interval is minimum tRC. Any command must not be sup-
plied to the device before tRC from the REFA command.
Singlecycleofauto-refreshisinitiatedwithaREFA(/CS=/RAS=/
CAS=L, /WE=/CKE=H)command. Therefreshaddressisgen-
erated internally. 4096 REFA cycles within 64ms refresh
128M bit memory cells. The auto-refresh is performed on 4
banks concurrently. Before performing an auto-refresh, all
Auto-Refresh
CLK
/CS
NOP or DESELECT
/RAS
/CAS
/WE
CKE
minimum tRFC
A0-11
BA0,1
Auto Refresh on All Banks
Auto Refresh on All Banks
Preliminary
Rev 1.0 Feb. 2001
25
ETRON [ ETRON TECHNOLOGY, INC. ]
