STV-674 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'STV-674' PDF : 35 Pages View PDF
Detailed Specifications
Figure 4: SDRAM write timing
STV0674
DCLK
CKE
Command
A0-9,BA
A10
DQM
DQ
tCK
tCL
tCH
tCMS tCMH
ACTIVE
WRITE
ROW
ROW
tAS
tAH
tCMS
NOP
COLUMN
PRECHARGE NOP
tDS
tDH
tCMH
DIN M
DIN M + 1
DIN M + 2
DIN M + 3
tRCD
tRC
tRAS
tRP
Symbol
tCK
tCH
tCL
tAC
tOH
tCMS
tCMH
tAS
Min
20.11
20.11
0
20.27
20.02
20.67
Typ.
41.67
20.83
20.83
Table 2: SDRAM timing
Max
21.55
21.55
24.76
Units
ns
tCK
tCK
ns
ns
ns
ns
ns
Symbol
tDS
tDH
tRCD
tRAS
tRC
tRP
tRRD
tAH
Min
20.12
21.82
1
2
4
2
2
19.79
Typ.
Max
Units
ns
ns
tCK
tCK
tCK
tCK
tCK
ns
Note: 1 The SDRAM interface is designed to operate with SDRAM devices which are compliant with the
Intel SDRAM Specification Revision 1.7 November 1999. Speed grades 66, 100 and 133MHz are
compatible.
2 Above timing assumes 20pF load per pad.
14/35
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