Discontinued (8/99 - last order; 12/99 - last ship)
IBM0364804 IBM0364164
IBM0364404 IBM03644B4
64Mb Synchronous DRAM - Die Revision B
AC Characteristics (TA = 0 to +70°C, VDD = 3.3V ± 0.3V)
1. An initial pause of 200µs, with DQM and CKE held high, is required after power-up. A Precharge All Banks command must be given
followed by a minimum of eight Auto (CBR) Refresh cycles before or after the Mode Register Set operation.
2. The Transition time is measured between VIH and VIL (or between VIL and VIH).
3. In addition to meeting the transition rate specification, the clock and CKE must transit between VIH and VIL (or between VIL and VIH)
in a monotonic manner.
4. Load Circuit A: AC timing tests have VIL = 0.4 V and VIH = 2.4 V with the timing referenced to the 1.40V crossover point
5. Load Circuit A: AC measurements assume tT = 1.0 ns.
6. Load Circuit B: AC timing tests have VIL = 0.8 V and VIH = 2.0 V with the timing referenced to the 1.40V crossover point
7. Load Circuit B: AC measurements assume tT = 1.2 ns.
.
AC Output Load Circuits
t
T
Vtt=1.4V
V
IH
50Ω
Output
1.4V
t
t
CKH
Clock
Input
CKL
Zo = 50Ω
V
IL
50pF
50pF
t
SETUP
AC Output Load Circuit (A)
t
HOLD
1.4V
Output
Zo = 50Ω
t
OH
t
AC
t
AC Output Load Circuit (B)
LZ
1.4V
Output
Clock and Clock Enable Parameters
-68
-260
Min.
-360
-10
Symbol
Parameter
Units Notes
Min.
6.8
12
—
—
—
—
3
Max.
1000
1000
6
Max.
1000
1000
—
Min.
7.4
15
—
—
—
—
3
Max.
1000
1000
—
Min.
10
15
—
—
—
—
3
Max.
1000
1000
7
tCK3
tCK2
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
7.4
10
—
—
—
—
3
ns
ns
tAC3 (A)
tAC2 (A)
tAC3 (B)
tAC2 (B)
tCKH
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
1
1
2
2
7
—
—
8
—
6
6
9
—
6
9
9
—
—
—
—
tCKL
Clock Low Pulse Width
3
—
3
—
3
—
3
—
tCES
Clock Enable Set-up Time
2
—
1.8
0.8
0
—
1.8
0.8
0
—
3
—
tCEH
Clock Enable Hold Time
1
—
—
—
1
—
tSB
Power down mode Entry Time
Transition Time (Rise and Fall)
0
6.8
10
7.4
10
7.4
10
0
10
10
tT
0.5
0.5
0.5
0.5
1. Access time is measured at 1.4V. See AC Characteristics, notes 1, 2, 3, 4, and 5 and load circuit A.
2. Access time is measured at 1.4V. See AC Characteristics, notes 1, 2, 3, 6, and 7 and load circuit B.
©IBM Corporation. All rights reserved.
Use is further subject to the provisions at the end of this document.
19L3264.E35855A
1/28/99
Page 42 of 72
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