EM48BM0884VTA
AC Operating Test Characteristics (Continued)
(VDD=3.3V±0.3V)
-6
-7
Symbol
tRC
Parameter
Units
Min.
Max.
-
Min.
Max.
-
ACTIVE to ACTIVE Command Period
60
63
ns
ns
ns
ns
ns
tCK
tCK
tCK
(Note 6)
ACTIVE to PRECHARGE Command
Period (Note 6)
tRAS
tRP
42
18
18
12
1
100K
45
20
20
14
1
100K
PRECHARGE to ACTIVE Command
Period (Note 6)
-
-
-
-
-
-
-
-
-
-
-
-
ACTIVE to READ/WRITE Delay Time
tRCD
tRRD
tCCD
tDPL
(Note 6)
ACTIVE(one) to ACTIVE(another)
Command (Note 6)
READ/WRITE Command to
READ/WRITE Command
Date-in to PRECHARGE Command
2
2
tBDL
Date-in to BURST Stop Command
Data-out to High
1
1
tROH
Impedance from
CL=3
3
-
3
-
tCK
PRECHARGE Command
tSREX
tWR
tDQW
tREF
Self Refresh Exit Time
1
2
-
-
-
-
1
2
0
-
-
-
tCK
tCK
tCK
ms
Write Recovery Time, Auto precharge
DQM Write Mask Latency
0
-
Refresh Time (8,192 cycle)
64
64
* All voltages referenced to VSS.
Note 6: These parameters account for the number of clock cycles and depend on the operating
frequency of the clock, as follows:
The number of clock cycles = Specified value of timing/clock period (Count Fractions as a
whole number)
Aug. 2011
10/20
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