IBM0316809C IBM0316409C
IBM0316169C
16Mbit Synchronous DRAM
Common Parameters
-10
-11
-12
-13
Symbol
Parameter
Units
Notes
Min. Max. Min. Max. Min. Max. Min. Max.
tCS
tCH
Command Setup Time
3
1
—
—
—
—
—
3
1
—
—
—
—
—
3.5
1.5
3.5
1.5
36
—
—
—
—
—
3.5
1.5
3.5
1.5
39
—
—
—
—
—
ns
ns
Command Hold Time
tAS
Address and Bank Select Set-up Time
Address and Bank Select Hold Time
RAS to CAS Delay
3
3
ns
tAH
1
1
ns
tRCD
tRC
tRAS
tRP
tRRD
tCCD
30
33
ns
Bank Cycle Time
80 120000 88 120000 96 120000 104 120000
50 120000 55 120000 60 120000 65 120000
ns
Active Command Period
Precharge Time
ns
30
30
1
—
—
—
33
33
1
—
—
—
36
36
1
—
—
—
39
39
1
—
—
—
ns
Bank to Bank Delay Time
CAS to CAS Delay Time (Same Bank)
ns
CLK
Refresh Cycle
-10
-11
-12
-13
Symbol
Parameter
Units
Notes
Min. Max. Min. Max. Min. Max. Min. Max.
2CLK
+tRC
2CLK
+tRC
2CLK
+tRC
2CLK
+tRC
tSREX
tREF
1. 4096 cycles.
Self Refresh Exit Time
—
—
—
—
ns
3
Refresh Period
—
64
—
64
—
64
—
64
ms
1, 2
2. Any time that the Refresh Period has been exceeded, a minimum of two Auto (CBR) Refresh commands must be given to “wake-
up” the device.
3. Self Refresh Exit is a synchronous operation and begins on the 2nd positve clock edge after CKE returns high. Self Refresh Exit is
not complete until a time period equal to tRC is satisfied once the Self Refresh Exit command is registered.
Read Cycle
-10
-11
-12
-13
Symbol
Parameter
Units
Notes
Min. Max. Min. Max. Min. Max. Min. Max.
tOH3
tOH2
tOH1
tLZ
Data Out Hold Time, CAS Latency = 3
Data Out Hold Time, CAS Latency = 2
Data Out Hold Time, CAS Latency = 1
Data Out to Low Impedance Time
4
4
—
—
—
—
8
4
4
—
—
—
—
8
4
4
—
—
—
—
8
4
4
—
—
—
—
8
ns
ns
4
4
4
4
ns
0
0
0
0
ns
tHZ3
tHZ2
tHZ1
tDQZ
Data Out to High Impedance Time, CL= 3
Data Out to High Impedance Time, CL= 2
Data Out to High Impedance Time, CL= 1
DQM Data Out Disable Latency
—
—
—
2
—
—
—
2
—
—
—
2
—
—
—
2
ns
1
1
1
10
10
—
10
10
—
10
10
—
10
10
—
ns
ns
CLK
1. Referenced to the time at which the output achieves the open circuit condition, not to output voltage levels.
©IBM Corporation, 1996. All rights reserved.
Use is further subject to the provisions at the end of this document.
07H3997
SA14-4711-02
Revised 05/96
Page 36 of 100
IBM [ IBM ]
