NT5SV64M4AT Datasheet, PDF (38/65 Pages) List of Unclassifed Manufacturers – 256Mb Synchronous DRAM

NT5SV64M4AT(L)
NT5SV32M8AT(L)
NT5SV16M16AT(L)
256Mb Synchronous DRAM
Clock and Clock Enable Parameters
Symbol
Parameter
-7 K
Min.
Max.
-75B
Min.
Max.
t_CK3
t_CK2
t_{AC3 (A)}
t_{AC2 (A)}
t_{AC3 (B)}
t_{AC2 (B)}
t_CKH
t_CKL
t_CES
t_CEH
t_SB
t_T
Clock Cycle Time, CAS Latency = 3
Clock Cycle Time, CAS Latency = 2
Clock Access Time, CAS Latency = 3
Clock Access Time, CAS Latency = 2
Clock Access Time, CAS Latency = 3
Clock Access Time, CAS Latency = 2
Clock High Pulse Width
Clock Low Pulse Width
Clock Enable Set-up Time
Clock Enable Hold Time
Power down mode Entry Time
Transition Time (Rise and Fall)
7
1000
7.5
1000
7.5
1000
10
—
—
—
—
—
—
—
—
—
—
5.4
—
5.4
—
5.4
—
6
2.5
—
2.5
—
2.5
—
2.5
—
1.5
—
1.5
—
0.8
—
0.8
—
0
7.5
0
7.5
0.5
10
0.5
10
1. Access time is measured at 1.4V. See AC Characteristics: notes 1, 2, 3, 4, 5 and load circuit A.
2. Access time is measured at 1.4V. See AC Characteristics: notes 1, 2, 3, 6, 7 and load circuit B.
-8B
Min.
Max.
8
1000
10
1000
—
—
—
—
—
6
—
6
3
—
3
—
2
—
1
—
0
10
0.5
10
Units Notes
ns
ns
ns
1
ns
1
ns
2
ns
2
ns
ns
ns
ns
ns
ns
Common Parameters
Symbol
Parameter
t_CS
t_{C H}
t_AS
t_AH
t_{R C D}
t_{R C}
t_RAS
t_RP
t_{R R D}
t_{C C D}
Command Setup Time
Command Hold Time
Address and Bank Select Set-up Time
Address and Bank Select Hold Time
RAS to CAS Delay
Bank Cycle Time
Active Command Period
Precharge Time
Bank to Bank Delay Time
CAS to CAS Delay Time
-7K
Min.
Max.
1.5
—
0.8
—
1.5
—
0.8
—
15
—
60
—
45
100K
15
—
15
—
1
—
-75B
Min.
Max.
1.5
—
0.8
—
1.5
—
0.8
—
20
—
67.5
—
45
100K
20
—
15
—
1
—
-8B
Min.
Max.
2
—
1
—
2
—
1
—
20
—
70
—
50
100K
20
—
20
—
1
—
Units Notes
ns
ns
ns
ns
ns
1
ns
1
ns
1
ns
1
ns
1
CK
1. These parameters account for the number of clock cycle 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).
Mode Register Set Cycle
Symbol
Parameter
t_RSC Mode Register Set Cycle Time
-7K
Min.
Max.
15
—
-75B
Min.
Max.
15
—
-8B
Min.
Max.
20
—
Units
ns
REV 1.0
May, 2001
38
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