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TMS44400 Datasheet(PDF) 2 Page - Texas Instruments

Part No. TMS44400
Description  1048576-WORD BY 4-BIT DYNAMIC RANDOM-ACCESS MEMORIES
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TMS44400 Datasheet(HTML) 2 Page - Texas Instruments

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TMS44400, TMS44400P, TMS46400, TMS46400P
1048576-WORD BY 4-BIT
DYNAMIC RANDOM-ACCESS MEMORIES
SMHS562C – MAY 1995 – REVISED NOVEMBER 1996
2
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
logic symbol
A0
A1
A2
A3
A4
A5
A6
A7
A8
RAS
CAS
W
OE
9
10
11
12
14
15
16
17
18
4
23
3
22
20D10/21D0
20D19/21D9
C20 [ROW]
G23/[REFRESH ROW]
24 [PWR DWN]
C21[COLUMN]
G24
23C22
23,21D
24,25 EN
G25
A
0
1 048 575
RAM 1024K
× 4
&
A9
5
1
2
24
25
A,Z26
A,22D
26
DQ1
DQ2
DQ3
DQ4
† This symbol is in accordance with ANSI / IEEE Std 91-1984 and IEC Publication 617-12.
Pin numbers shown are for the DJ package.
functional block diagram
A0
A1
A9
16
Timing and Control
Column-
Address
Buffers
Row-
Address
Buffers
I/O
Buffers
1 of 16
Selection
Data-
In
Reg.
Data-
Out
Reg.
Column Decode
Sense Amplifiers
R
o
w
D
e
c
o
d
e
16
128K Array
128K Array
128K Array
128K Array
128K Array
128K Array
RAS
CAS
W
DQ1 – DQ4
4
4
OE
2
8
10
10
16
16
2


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