EM6A9320 Etron Technology Inc., EM6A9320 Datasheet - Page 13

• Manufacturer Part Number: EM6A9320
• Description: 4M x 32 DDR SDRAM
• Manufacturer: Etron Technology Inc.

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Figure 3. Bank Activate Read or Write Command Timing
Figure 4. Burst Stop for Read (CAS Letancy = 5, Burst Length = 4)
Figure 5. Read with Auto Precharge (CAS Letancy = 5, Burst Length = 4)
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CK#
CK
CMD
A0-11,
BA0-1
DQS
DQ
CK#
CK
CMD
A0-11,
BA0-1
DQS
DQ
CK
CMD
A0-11
BA0-1
Begin of Auto Precharge
ROW ADR
ROW ADR
Bank ADR
Valid
Valid
RDA
RD
ACT
RA
BA
0
0
t
RCDRD
Read with Auto Precharge
Column ADR
BST
t
RAS
RD
CA
BA
1
1
CAS Latency = 5
t
RC
Percharge
2
2
PRE
BA
t
Burst Stop for CAS Latency = 5
RP
4Mx32 DDR SDRAM
3
After 1 x CK Command can be
3
ACT
RA
BA
13
t
RRD
4
4
ACT
RA
BA
Bank can be Active after Auto Precharge
t
RCDWR
t
RP
5
5
DQ0 DQ1
DQ0 DQ1
t
WR
RAS
CA
BA
6
6
t
DQ2 DQ3
RC
Rev 0.3
1x CK
PRE
BA
EM6A9320
CMD
7
t
RP
ACT
RA
BA
July. 2002
Valid
ACT
8