Discontinued (9/98 - last order; 3/99 last ship)
IBM11M2645H
IBM11M2645HB
2M x 64 DRAM MODULE
Read Cycle
-60
-70
Symbol
Parameter
Unit
Notes
Min
—
—
—
—
2
Max
60
20
35
20
—
Min
—
—
—
—
2
Max
70
25
40
25
—
tRAC
tCAC
tAA
Access Time from RAS
Access Time from CAS
ns
ns
ns
ns
ns
ns
ns
ns
ns
1, 2
1, 2
1, 2
1, 2
Access Time from Address
Access Time from OE
tOEA
tRCS
tRCH
tRRH
tRAL
tCLZ
Read Command Setup Time
Read Command Hold Time to CAS
Read Command Hold Time to RAS
Column Address to RAS Lead Time
CAS to Output in Low-Z
2
—
2
—
3
3
0
—
0
—
35
2
—
40
2
—
—
—
tOES
tORD
tCDD
tOEZ
tOFF
OE setup time prior to CAS
10
5
—
—
—
20
20
10
5
—
—
—
20
20
ns
ns
ns
ns
ns
OE setup time prior to RAS (Hidden Refresh)
CAS to DIN Delay Time
5
4
20
2
20
2
Output Buffer Turn-off Delay from OE
Output Buffer Turn-off Delay
4, 6
2
2
1. Measured with the specified current load and 100pF.
2. Access time is determined by the latter of tRAC, tCAC, tCPA, tAA, tOEA
3. Either tRCH or tRRH must be satisfied.
.
4. tOFF (max) and tOEZ (max) define the time at which the output achieves the open circuit condition and is not referenced to output
voltage levels.
5. Either tCDD or tODD must be satisfied.
6. tOFF is referenced from the rising edge of RAS or CAS , whichever is last.
©IBM Corporation. All rights reserved.
Use is further subject to the provisions at the end of this document.
50H4197
SA14-4614-02
Released 5/96
Page 9 of 29
IBM [ IBM ]
