IBM11D1360E
IBM11E1360E
IBM11D2360E
IBM11E2360E
1M/2M x 36 DRAM Module
AC Characteristics (TA = 0 to +70°C, VCC = 5.0V ± 0.5V)
1. VIH (min) and VIL (max) are reference levels for measuring timing of input signals. Transition times are measured between VIH and
VIL.
2. An initial pause of 100µs is required after power-up followed by 8 RAS only refresh cycles before proper device operation is
achieved. In case of using internal refresh counter, a minimum of 8 CAS before RAS refresh cycles instead of 8 RAS only refresh
cycles is required.
3. AC measurements assume tT = 5ns.
Read, Write, and Refresh Cycles (Common Parameters)
-60
-70
Symbol
Parameter
Units
Notes
Min
Max
Min
Max
tRC
tRP
tCP
Random Read or Write Cycle Time
RAS Precharge Time
110
40
—
—
—
130
50
—
—
—
ns
ns
ns
CAS Precharge Time
10
10
1
tRAS
RAS Pulse Width
60
10K
70
10K
ns
tCAS
tASR
tRAH
tASC
CAS Pulse Width
15
0
100K
—
20
0
100K
—
ns
ns
ns
ns
Row Address Setup Time
Row Address Hold Time
Column Address Setup Time
10
0
—
10
0
—
—
—
tCAH
tRCD
tRAD
Column Address Hold Time
RAS to CAS Delay Time
10
20
13
—
45
30
10
20
15
—
52
35
ns
ns
ns
2
3
RAS to Column Address Delay Time
tRSH
tCSH
tCRP
tDZC
tT
RAS Hold Time
15
60
5
—
—
—
—
50
—
18
70
5
—
—
—
—
50
—
ns
ns
ns
ns
ns
ns
CAS Hold Time
CAS to RAS Precharge Time
CAS Delay Time from DIN
Transition Time (Rise and Fall)
Hold Time CAS Low to CAS High
0
0
3
3
tCLCH
10
10
4
5
tAR
Column Address Hold Time Referenced to RAS
—
—
—
—
ns
1. Last rising CASx edge to first falling CASx edge.
2. Operation within the tRCD (max) limit ensures that tRAC (max) can be met. tRCD (max) is specified as a reference point only: if tRCD is
greater than the specified tRCD (max) limit, then access time is controlled by tCAC.
3. Operation within the tRAD (max) limit ensures that tRAC (max) can be met. tRAD (max) is specified as a reference point only: If tRAD
is greater than the specified tRAD (max) limit, then access time is controlled by tAA
.
4. Last falling CASx edge to first rising CASx edge.
5. This timing parameter is not applicable to this product, but applies to a related product in this family.
©IBM Corporation. All rights reserved.
Use is further subject to the provisions at the end of this document.
50H7977
SA14-4332-02
Revised 6/96
Page 7 of 20
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