is42s16128 Integrated Silicon Solution, Inc., is42s16128 Datasheet - Page 6

• Manufacturer Part Number: is42s16128
• Description: 128k Words Bits Banks Sdram
• Manufacturer: Integrated Silicon Solution, Inc.

AC CHARACTERISTICS
Notes:
1. When power is first applied, memory operation should be started 100 µs after Vcc and VccQ reach their stipulated voltages. Also
2. Measured with t
3. The reference level is 1.4 V when measuring input signal timing. Rise and fall times are measured between V
4. Access time is measured at 1.4V with the load shown in the figure below.
5. The time t
6
IS42S16128
Symbol
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
t
CK
CK
AC
AC
CHI
CL
OH
OH
LZ
HZ
HZ
DS
DH
AS
AH
CKS
CKH
CKA
CS
CH
RC
RAS
RP
RCD
RRD
DPL
DPL
DAL
DAL
REF
T
note that the power-on sequence must be executed before starting memory operation.
when the output is in the high impedance state.
3
2
3
2
3
2
3
2
3
2
3
2
Parameter
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
CKE to CLK Recovery Delay 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)
Refresh Cycle Time
HZ
(max.) is defined as the time required for the output voltage to transition by ± 200 mV from V
T
= 1 ns.
(4)
(1,2,3)
(5)
CAS Latency = 3
CAS Latency = 2
CAS Latency = 3
CAS Latency = 2
CAS Latency = 3
CAS Latency = 2
CAS Latency = 3
CAS Latency = 2
CAS Latency = 3 1CLK+8
CAS Latency = 2
CAS Latency = 3 2CLK+24
CAS Latency = 2 1CLK+24
Transition Time
1CLK+3
Min.
13
—
—
80
54
24
24
24
—
Integrated Silicon Solution, Inc. — 1-800-379-4774
8
3
3
3
3
0
3
3
2
1
2
1
2
1
2
1
8
1
-8
12,000
Max.
—
—
10
—
—
—
—
—
10
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
30
16
6
6
1CLK+10
2CLK+30
1CLK+30
1CLK+3
Min.
1.5
1.5
1.5
1.5
10
15
90
60
30
30
30
10
—
—
—
4
4
4
4
4
0
4
3
3
3
3
1
-10
12,000
Max.
13
12
30
16
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
8
8
1CLK+12
2CLK+34
1CLK+34
1CLK+3
Min.
108
4.5
4.5
12
17
72
34
34
34
12
—
—
—
4
4
0
4
4
3
2
3
2
3
2
3
2
1
OH
IH
(min.) and V
-12
(min.) or V
ISSI
12,000
Max.
—
—
10
15
—
—
—
—
—
10
14
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
30
16
OL
IL
Units
ms
03/13/00
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
ns
(max.).
(max.)
Rev. A
®