IBM0118160
IBM0118160M
IBM0118160B IBM0118160P
1M x 16 10/10 DRAM
Read-Modify-Write Cycle
-50
-60
-70
Symbol
Parameter
Units
Notes
Min. Max. Min. Max. Min. Max.
tRWC
tRWD
tCWD
tAWD
tOEH
Read-Modify-Write Cycle Time
RAS to WE Delay Time
128
68
31
43
13
—
—
—
—
—
150
80
35
50
15
—
—
—
—
—
180
95
45
60
15
—
—
—
—
—
ns
ns
ns
ns
ns
1
1
1
CAS to WE Delay Time
Column Address to WE Delay Time
OE Command Hold Time
1. tWCS, tRWD, tCWD, tAWD and tCPW are not restrictive operating parameters. They are included in the data sheet as electrical charac-
teristics only. If tWCS ≥ tWCS (min), the cycle is an early write cycle and the data pin will remain open circuit (high impedance)
through the entire cycle. If tRWD ≥ tRWD (min), tCWD ≥ tCWD (min), tAWD ≥ tAWD (min), and tCPW ≥ tCPW (min)(Fast Page Mode), the
cycle is a Read-Modify-Write cycle and the data out will contain data read from the selected cell. If neither of the above sets of con-
ditions are satisfied, the condition of the data out (at access time) is indeterminate.
Fast Page Mode Cycle
-50
-60
-70
Symbol
Parameter
Units
Notes
Min. Max. Min. Max. Min. Max.
tPC
Fast Page Mode Cycle Time
35
50
—
30
—
200K
28
40
60
—
35
—
200K
35
45
70
—
40
—
200K
40
ns
ns
ns
ns
tRASP
tCPA
Fast Page Mode RAS Pulse Width
Access Time from CAS Precharge
RAS Hold Time from CAS Precharge
1
tCPRH
—
—
—
1. Measured with the specified current load and 100pF.
Fast Page Mode Read-Modify-Write Cycle
-50
-60
-70
Symbol
Parameter
Units
Notes
Min. Max. Min. Max. Min. Max.
Fast Page Mode Read-Modify-Write
Cycle Time
tPRWC
tCPW
71
48
—
—
80
55
—
—
95
65
—
—
ns
ns
WE Delay Time from CAS Precharge
1
1. tWCS, tRWD, tCWD, tAWD and tCPW are not restrictive operating parameters. They are included in the data sheet as electrical charac-
teristics only. If tWCS ≥ tWCS (min), the cycle is an early write cycle and the data pin will remain open circuit (high impedance)
through the entire cycle. If tRWD ≥ tRWD (min), tCWD ≥ tCWD (min), tAWD ≥ tAWD (min), and tCPW ≥ tCPW (min)(Fast Page Mode), the
cycle is a Read-Modify-Write cycle and the data out will contain data read from the selected cell. If neither of the above sets of con-
ditions are satisfied, the condition of the data out (at access time) is indeterminate.
©IBM Corporation. All rights reserved.
Use is further subject to the provisions at the end of this document.
43G9388
SA14-4209-04
Revised 11/96
Page 10 of 26
IBM [ IBM ]
