128Mb Synchronous DRAM
P2V28S20ATP-7,-75,-8 (4-BANK x 8,388,608-WORD x 4-BIT)
P2V28S30ATP-7,-75,-8 (4-BANK x 4,194,304-WORD x 8-BIT)
P2V28S40ATP-7,-75,-8 (4-BANK x 2,097,152-WORD x 16-BIT)
AUTO REFRESH
be in the idle state. Auto-refresh to auto-refresh interval is mini-
mum tRC. Any command must not be supplied to the device be-
foretRCfromtheREFAcommand.
Singlecycleofauto-refreshisinitiatedwithaREFA(/CS=/RAS=/
CAS=L, /WE=/CKE=H)command. Therefreshaddressisgen-
eratedinternally. 4096REFAcycleswithin64msrefresh64Mbit
memory cells. The auto-refresh is performed on 4 banks
concurrently. Before performing an auto-refresh, all banks must
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
JULY.2000
Rev.2.2
Page-27
VML [ VANGUARD INTERNATIONAL SEMICONDUCTOR ]
