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M21L216128A
Elite Semiconduture Memory Technology Inc
Publication Date : Sep. 2000
Revision : 1.0
1/14
SRAM
128 K x 16 SRAM
HIGH SPEED CMOS SRAM
FEATURES
ORDERING INFORMATION
T Fast access times : 10, 12, and 15ns
T Fast OE access times : 5, 6, and 7ns
T Single +3.3V ± 0.3V power supply
T Fully static -- no clock or timing strobes necessary
T All inputs and outputs are TTL-compatible
T Three state outputs
T Center power and ground pins for greater noise immunity
T Easy memory expansive with CE and OE options
T Automatic CE power down
T
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44-pin 400mil SOJ
44-pin 400mil TSOP (TypeII)
PRODUCT NO.
Acess Time
(ns)
PACKING
TYPE
M21L216128A-10J
SOJ
M21L216128A-10T
10
TSOP
M21L216128A-12J
SOJ
M21L216128A-12T
12
TSOP
M21L216128A-15J
SOJ
M21L216128A-15T
15
TSOP
GENERAL DESCRIPTION
The M21L216128A is
a high
speed,
low
power
asynchronous
SRAM
containing
2,097,152
bits
and
organized as 131,072 by 16 bits, it is produced by high
performance CMOS process.
This
device offers center power and ground pins for
improved performance and noise immunity. Static design
eliminates the need for external clocks or timing strobes. For
increased system flexibility and eliminating bus contention
problems, this device offers chip enable ( CE ), separate byte
enable controls ( LB and HE ) and output enable ( OE ) with this
organization.
PIN ASSIGNMENT
SOJ Top View
TSOP (TypeII) Top View
1
2
3
4
5
6
7
8
9
A4
A3
A2
A1
A0
CE
DQ1
DQ2
DQ3
44
43
42
41
40
39
38
37
36
A5
A6
A7
OE
HB
LB
DQ 1 6
DQ 1 5
DQ 1 4
10
11
12
13
14
15
16
17
18
19
20
21
22
DQ 4
VC C
GN D
DQ 5
DQ 6
DQ 7
DQ 8
WE
A1 6
A1 5
A1 4
A1 3
A1 2
35
34
33
32
31
30
29
28
27
26
25
24
23
DQ 1 3
GN D
VC C
DQ 1 2
DQ 1 1
DQ 1 0
DQ9
NC
A8
A9
A10
A11
NC
1
2
3
4
5
6
7
8
9
1 0
1 1
A4
A3
A2
A1
A0
CE
DQ 1
DQ 2
DQ 3
DQ 4
VC C
GN D
DQ 5
DQ 6
DQ 7
DQ 8
WE
A1 6
A1 5
A1 4
A1 3
A1 2
4 4
4 3
4 2
4 1
4 0
3 9
3 8
3 7
3 6
3 5
3 4
A5
A6
A7
OE
HB
LB
DQ 1 6
DQ 1 5
DQ 1 4
DQ 1 3
GN D
VC C
DQ 1 2
DQ 1 1
DQ 1 0
DQ 9
NC
A8
A9
A1 0
A1 1
NC
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
2 0
2 1
2 2
3 3
3 2
3 1
3 0
2 9
2 8
2 7
2 6
2 5
2 4
2 3