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NT5DS64M4AT NT5DS64M4AW
NT5DS32M8AT NT5DS32M8AW
256Mb Double Data Rate SDRAM
REV 1.1
12/2001
32
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NANYA TECHNOLOGY CORP. reserves the right to change Products and Specifications without notice.
Write Burst (Burst Length = 4)
T1
T2
T3
T4
tDQSS (max)
NOP
NOP
NOP
Write
DI a-b = data in for bank a, column b.
3 subsequent elements of data in are applied in the programmed order following DI a-b.
A non-interrupted burst is shown.
A10 is Low with the Write command (Auto Precharge is disabled).
CK
CK
Command
Address
DQS
DQ
DM
Don’t Care
Maximum DQSS
BA a, COL b
T1
T2
T3
T4
tDQSS (min)
NOP
NOP
NOP
Write
CK
CK
Command
Address
DQS
Minimum DQSS
BA a, COL b
DQ
DM
Dla-b
Dla-b
QFC
tQCSW(max)
tQCHW(min)
(Optional)
QFC
tQCSW(max)
tQCHW(max)
QFC is an open drain driver. Its output high level is achieved through an externally connected pull up resistor connected to VDDQ.
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