is42s32400e Integrated Silicon Solution, Inc., is42s32400e Datasheet - Page 16

• Manufacturer Part Number: is42s32400e
• Description: 4m X 32 128mb Synchronous Dram
• Manufacturer: Integrated Silicon Solution, Inc.

IS42S32400E
AC ELECTRICAL CHARACTERISTICS
Notes:
1. The power-on sequence must be executed before starting memory operation.
2. measured with t
3. The reference level is 1.4V when measuring input signal timing. Rise and fall times are measured between V
16
Symbol Parameter
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
ck3
ck2
ac3
ac2
chi
cl
oh3
oh2
lz
hz
ds
dh
as
ah
cks
ckh
cs
ch
rc
ras
rp
rcd
rrd
dpl
dal
mrd
dde
xsr
t
ref
(max).
Clock Cycle Time
Access Time From CLK
CLK HIGH Level Width
CLK LOW Level Width
Output Data Hold Time
Output LOW Impedance Time
Output HIGH Impedance Time
Input Data Setup Time
Input Data Hold Time
Address Setup Time
Address Hold Time
CKE Setup Time
CKE Hold Time
Command Setup Time (CS, RAS, CAS, WE, DQM)
Command Hold Time (CS, RAS, CAS, WE, DQM)
Command Period (REF to REF / ACT to ACT)
Command Period (ACT to PRE)
Command Period (PRE to ACT)
Active Command To Read / Write Command Delay Time
Command Period (ACT [0] to ACT[1])
Input Data To Precharge
Command Delay time
Input Data To Active / Refresh
Command Delay time (During Auto-Precharge)
Mode Register Program Time
Power Down Exit Setup Time
Self-Refresh Exit Time
Transition Time
Refresh Cycle Time (4096)
t
= 1 ns. If clock rising time is longer than 1ns, (t
(2)
(2)
(2)
(2)
(2)
(2)
CAS Latency = 3
CAS Latency = 2
CAS Latency = 3
CAS Latency = 2
CAS Latency = 3
CAS Latency = 2
(1,2,3)
(2)
(2)
r
Min.
2.5
2.5
2.7
2.7
2.7
1.5
0.8
1.5
0.8
1.5
0.8
1.5
0.8
60
42
18
18
12
12
12
70
—
—
—
30
/2 - 0.5) ns should be added to the parameter.
6
8
0
6
1
-6
Max.
100K
5.4
6.5
5.4
10
64
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Min.
67.5
2.5
2.5
2.7
2.7
1.5
0.8
1.5
0.8
1.5
0.8
1.5
0.8
7.5
10
45
20
20
14
14
15
70
—
—
34
—
7
3
0
1
-7
Integrated Silicon Solution, Inc. - www.issi.com
Max.
100K
5.4
6.5
5.4
10
64
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
ih
(min.) and V
Units
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
il
Rev. 00B
03/06/08