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TM248CBK32F-70 Datasheet(PDF) 7 Page - Texas Instruments

Part # TM248CBK32F-70
Description  32-BIT DYNAMIC RAM MODULE
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TM248CBK32F-70 Datasheet(HTML) 7 Page - Texas Instruments

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TM124BBK32F, TM124BBK32U 1048576 BY 32BIT DYNAMIC RAM MODULE
TM248CBK32F, TM248CBK32U 2097152 BY 32BIT DYNAMIC RAM MODULE
SMMS649A − DECEMBER 1994 − REVISED JUNE 1995
7
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251−1443
timing requirements over recommended ranges of supply voltage and operating free-air
temperature (continued)
’124BBK32F - 60
’248CBK32F - 60
’124BBK32F - 70
’248CBK32F - 70
’124BBK32F - 80
’248CBK32F - 80
UNIT
MIN
MAX
MIN
MAX
MIN
MAX
UNIT
tWCH
Hold time, W low after CAS low
10
15
15
ns
tWRH
Hold time, W high after RAS low (CBR refresh only)
10
10
10
ns
tCHR
Delay time, RAS low to CAS high (CBR refresh only)
10
10
10
ns
tCRP
Delay time, CAS high to RAS low
5
5
5
ns
tCSH
Delay time, RAS low to CAS high
60
70
80
ns
tCSR
Delay time, CAS low to RAS low (CBR refresh only)
5
5
5
ns
tRAD
Delay time, RAS low to column address (see Note 10)
15
30
15
35
15
40
ns
tRAL
Delay time, column address to RAS high
30
35
40
ns
tCAL
Delay time, column address to CAS high
30
35
40
ns
tRCD
Delay time, RAS low to CAS low (see Note 10)
20
45
20
52
20
60
ns
tRPC
Delay time, RAS high to CAS low (CBR only)
0
0
0
ns
tRSH
Delay time, CAS low to RAS high
15
18
20
ns
tREF
Refresh time interval
16
16
16
ms
tT
Transition time
3
30
3
30
3
30
ns
NOTE 10: The maximum value is specified only to assure access time.
device symbolization (TM124BBK32F illustrated)
TM124BBK32F
-SS
YYMMT
YY = Year Code
MM = Month Code
T = Assembly Site Code
-SS = Speed Code
NOTE: Location of symbolization may vary.


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