EM639165 Etron Technology Inc., EM639165 Datasheet - Page 22

• Manufacturer Part Number: EM639165
• Description: 8Mega x 16bits SDRAM
• Manufacturer: Etron Technology Inc.

[ Write Interrupted by Precharge ]
Burst write operation can be interrupted by precharge of the same bank.Write recovery time(tWR) is required from the last data
to PRE command. During write recovery, data inputs must be masked by DQM.
Preliminary
[Write Interrupted by Burst Terminate]
Burst terminate command can terminate burst write operation.In this case, the write recovery time is not required and the
bank remains active. WRITE to TBST interval is minimum 1 CLK.
Command
Command
A0-9,11
A0-9,11
BA0-1
BA0-1
DQM
CLK
A10
CLK
A10
DQ
DQ
ACT
ACT
Xa
00
Xa
00
0
0
Write Interrupted by Precharge (BL=4)
Write Interrupted by Terminate (BL=4)
Write
Write
Da 0
Da 0
Ya
00
Ya
00
0
0
Da 1
Da 1
22
TBST
tWR
PRE
00
0
Write
Db 0
tRP
Yb
00
0
ACT
Db 1
Xa
00
0
Db 2
Rev 1.0
Db 3
EM639165
Feb. 2001