IBM0165165B
IBM0165165P
4M x 16 12/10 EDO DRAM
ADVANCED
AC Characteristics (TA=0 to +70°C, VCC=3.3 ± 0.3V)
1. 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.
2. AC measurements assume tT=2ns.
3. VIH(min.) and VIL(max.) are reference levels for measuring timing of input signals. Also, transition times are measured between VIH
and VIL.
4. Valid column addresses are only A0 through A9.
Read, Write, Read-Modify-Write and Refresh Cycle (Common Parameters)
-50
-60
Symbol
Parameter
Units
Notes
1
Min.
84
30
8
Max.
—
Min.
104
40
10
60
10
0
Max.
—
tRC
tRP
Random Read or Write Cycle Time
RAS Precharge Time
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
—
—
tCP
CAS Precharge Time
—
—
tRAS
tCAS
tASR
tRAH
tASC
tCAH
tRCD
tRAD
tRSH
tCSH
tCRP
tOED
tDZO
tDZC
tT
RAS Pulse Width
50
8
100k
100k
—
100k
100k
—
1
1
CAS Pulse Width
Row Address Setup Time
Row Address Hold Time
Column Address Setup Time
Column Address Hold Time
RAS to CAS Delay Time
RAS to Col. Address Delay Time
RAS Hold Time
0
7
—
10
0
—
0
—
—
7
—
10
14
12
10
50
5
—
11
9
37
25
—
45
30
—
2
3
8
CAS Hold Time
40
5
—
—
1
1
4
5
5
6
CAS to RAS Precharge Time
OE to DIN Delay Time
—
—
13
0
—
15
0
—
OE Delay Time From DIN
CAS Delay Time From DIN
Transition Time (Rise and Fall)
—
—
0
—
0
—
1
50
1
50
1. In a Test Mode Read cycle, the value of tRAC, tAA, tCAC and tCPA are delayed by 5ns from the specified value. These parameters
must be adjusted in Test Mode cycles by adding 5ns to the specified value. Associated timings must also be adjusted by 5ns.
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. Either tCDD or tODD must be satisfied.
5. Either tDZC or tDZO must be satisfied.
6. AC measurements assume tT = 2ns.
©IBM Corporation.. All rights reserved.
Use is further subject to the provisions at the end of this document.
27H6253
SA14-4239-02
10/96
Page 6 of 31
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