eorex
EM42BM1684RTA
AC Operating Test Characteristics (Continued)
(VDD=2.5V 0.2V, TA=0°C ~70°C)
-5
-6
-75
Symbol
Parameter
Read Postamble
Units
Min.
0.4
Max.
0.6
Min.
0.4
Max.
0.6
Min.
0.4
Max.
0.6
tRPST
tRAS
tCK
ns
Active to Precharge command
period
40
70k
42
70k
45
70k
tRC
tRFC
tRCD
tRP
Active to Active command period
Auto Refresh Row Cycle Time
Active to Read or Write delay
Precharge command period
55
70
15
15
60
72
18
18
65
75
20
20
ns
ns
ns
ns
tRRD
tCCD
Active bank A to B command period
10
1
12
1
15
1
ns
Column address to column address
delay
tCK
tCDLR
tCDLW
tDPL
Last data in to Read command
Last data in to Write command
Last data in to Precharge command
2.5 tCK- tDQSS
2.5 tCK- tDQSS
2.5 tCK- tDQSS
tCK
tCK
tCK
0
2
0
2
0
2
Exit self Refresh to non-read
command
tXSNR
75
75
75
ns
tXSRD
tREFI
Exit self Refresh to read command
Average periodic refresh interval
200
200
200
ns
us
15.6
15.6
15.6
Jul. 2006
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