Discontinued (9/98 - last order; 3/99 last ship)
IBM11S2325LP IBM11S1325LP
1M/2M x 32 SO DIMM Module
Write Cycle
-60
Symbol
t
WCS
t
WCH
t
WP
t
RWL
t
CWL
t
DS
t
DH
Write Command Set Up Time
Write Command Hold Time
Write Command Pulse Width
Write Command to RAS Lead Time
Write Command to CAS Lead Time
D
IN
Setup Time
D
IN
Hold Time
Parameter
Min
0
10
10
10
10
0
10
Max
—
—
—
—
—
—
—
ns
ns
ns
ns
ns
ns
ns
1
Units
Notes
1. t
WCS
is not a restrictive operating parameter. It is included in the data sheet as an electrical characteristic only. If
t
WCS
≥
t
WCS
(min), the cycle is an early write cycle and the data pin will remain open circuit (high impedance) through the entire
cycle. If neither of the above condition is not satisfied, the condition of the data out (at access time) is indeterminate.
Read Cycle
Symbol
t
RAC
t
CAC
t
AA
t
RCS
t
RCH
t
RRH
t
RAL
t
CLZ
t
CDD
t
OFF
Access Time from RAS
Access Time from CAS
Access Time from Address
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
CAS to D
IN
Delay Time
Output Buffer Turn-off Delay
Parameter
-60
Min
—
—
—
0
0
0
30
0
15
—
Max
60
15
30
—
—
—
—
—
—
15
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
5, 6
3
4
4
Notes
1, 2, 3
1, 3
2, 3
1. Operation within the t
RCD
(max.) limit ensures that t
RAC
(max.) can be met. t
RCD
(max.) is specified as a reference point only. If t
RCD
is greater than the specified t
RCD
(max.) limit, then access time is controlled by t
CAC
.
2. Operation within the t
RAD
(max.) limit ensures that t
RAC
(max.) can be met. t
RAD
(max.) is specified as a reference point only. If t
RAD
is greater than the specified t
RAD
(max.) limit, then access time is controlled by t
AA
.
3. Measured with the specified current load and 100pF at V
OL
= 0.8V and V
OH
= 2.0V.
4. Either t
RCH
or t
RRH
must be satisfied for a read cycle.
5. t
OFF
(max) defines the time at which the output achieves the open circuit condition and is not referenced to output voltage levels.
6. t
OFF
is referenced from the rising edge of RAS or CAS, which ever is last.
©IBM Corporation. All rights reserved.
Use is further subject to the provisions at the end of this document.
75H1720
SA14-4472-01
Revised 6/97
Page 8 of 22
IBM [ IBM ]
