DESCRIPTION
The Accutek AK53220482W high density memory module is a
CMOS dynamic RAM organized in 2048 x 32 bit words. The module
consists of sixteen standard 1 Meg x 4 DRAMs in plastic SOJ pack-
ages. The assembly has eight drams mounted on each side of a
printed circuit board in a 72 pad leadless SIM configuration.
This configuration allows socket-mounting of large quantities of
memory in applications where high density and ease of inserting ad-
ditional memory are important.
The operation of the AK5322048 is identical to sixteen 1Meg x 4
Drams. There are four
CAS
lines and four
RAS
lines. On each bank
of 1Meg x 32, independent byte control is accomplished by the four
CAS
lines, where each seperate
CAS
line controls two 1Meg x 4
Drams. Two banks of 32 bits are controlled by the two pairs of
RAS
lines. A sixteen bit data path can be produced by connecting DQ
1
to
DQ
17
, DQ
2
to DQ
18
, and alternately strobing
RAS
0
with
RAS
1
and
RAS
2
with
RAS
3
.
FEATURES
2,097,152 x 32 bit organization
72 pad Single In-Line Module
Multiple
CAS
and
RAS
lines allow x16 or x32 bit widths
CAS
-before-
RAS
,
RAS
-only or hidden refresh
Operating free air temperature 0
o
C to 70
o
C
Single 5 Volt Power Supply
2048 Refresh Cycles
Available in Fast Page Mode EDO versions
Power
5.32 Watt Max Active (60nS)
4.44 Watt Max Active (70 nS)
3.79 Watt Max Active (80 nS)
88 mW Max Standby
Available in leadless SIM or leaded Zip versions
Downward compatible with AK5321024, AK532512 and
AK532256
Upward compatible with AK5324096 and AK5328192
ADDITIONAL OPTIONS AVAILABLE
256K x 32 Version, AK532256
512K x 32 version, AK532512
1 Meg x 32 version, AK5321024
4 Meg x 32 version, AK5324096
8 Meg x 32 version, AK5328192
Accutek
Microcircuit
Corporation
AK5322048W
2,097,152 Word by 32 Bit CMOS
Dynamic Random Access Memory
PIN NOMENCLATURE
DQ
0
- DQ
31
Data In/Data Out
A
0
- A
9
Address Inputs
CAS
0
- CAS
3
Column Address Strobe
RAS
0
- RAS
3
Row Address Strobe
WE
Write Enable
PD
1
- PD
4
Presence Detect
Vcc
5V Supply
Vss
Ground
NC
No Connect
MODULE OPTIONS
Leadless SIM: AK5322048W
Leaded ZIP: AK5322048Z
PIN ASSIGNMENT
Pin #
Symbol
Pin #
Symbol
Pin #
Symbol
Pin #
Symbol
1
Vss
19
NC
37
NC
55
DQ11
2
DQ0
20
DQ4
38
NC
56
DQ27
3
DQ16
21
DQ20
39
Vss
57
DQ12
4
DQ1
22
DQ5
40
CAS0
58
DQ28
5
DQ17
23
DQ21
41
CAS2
59
Vcc
6
DQ2
24
DQ6
42
CAS3
60
DQ29
7
DQ18
25
DQ22
43
CAS1
61
DQ13
8
DQ3
26
DQ7
44
RAS0
62
DQ30
9
DQ19
27
DQ23
45
RAS1
63
DQ14
10
Vcc
28
A7
46
NC
64
DQ31
11
NC
29
NC
47
WE
65
DQ15
12
A0
30
Vcc
48
NC
66
NC
13
A1
31
A8
46
DQ8
67
PD1
14
A2
32
A9
50
DQ24
68
PD2
15
A3
33
RAS3
51
DQ9
69
PD3
16
A4
34
RAS2
52
DQ25
70
PD4
17
A5
35
NC
53
DQ10
71
NC
18
A6
36
NC
54
DQ26
72
Vss
Presence Detect -1 Meg x 32
Presence Detect - 2 Meg x 32
-60
-70
-80
-60
-70
-80
PD1
Vss
Vss
Vss
PD1
NC
NC
NC
PD2
Vss
Vss
Vss
PD2
NC
NC
NC
PD3
NC
Vss
NC
PD3
NC
Vss
NC
PD4
NC
NC
Vss
PD4
NC
NC
Vss
+
+
FUNCTIONAL DIAGRAM
MECHANICAL DIMENSIONS
A
0-A
9
RAS
CAS
WE
OE
A
0-A
9
RAS
CAS
WE
OE
A0
-
A
9
RAS
CAS
WE
OE
A
0-A
9
RAS
CAS
WE
OE
A0
-
A
9
RAS
CAS
WE
OE
DQ0
-
DQ3
A
0-A
9
RAS
CAS
WE
OE
DQ0
-
DQ3
A
0-A
9
RAS
CAS
WE
OE
DQ0
-
DQ3
A0
-
A
9
RAS
CAS
WE
OE
DQ0
-
DQ3
CAS0
CAS2
RAS0
DQ0
-
DQ3
DQ16
-
DQ19
DQ4
-
DQ7
DQ20
-
DQ23
RAS1
RAS3
RAS2
A
0-A
9
RAS
CAS
WE
OE
A0
-
A
9
RAS
CAS
WE
OE
DQ0
-
DQ3
DQ0
-
DQ3
DQ0
-
DQ3
DQ0
-
DQ3
DQ0
-
DQ3
DQ0
-
DQ3
DQ0
-
DQ3
DQ0
-
DQ3
A0
-
A
9
RAS
CAS
WE
OE
A
0-A
9
RAS
CAS
WE
OE
A0
-
A
9
RAS
CAS
WE
OE
DQ0
-
DQ3
A
0-A
9
RAS
CAS
WE
OE
DQ0
-
DQ3
A
0-A
9
RAS
CAS
WE
OE
DQ0
-
DQ3
A
0-A
9
RAS
CAS
WE
OE
DQ0
-
DQ3
CAS1
CAS3
DQ8
-
DQ1
1
DQ24
-
DQ27
DQ12
-
DQ15
DQ28
-
DQ31
A
0-A
9
WE
+
+
CL
CL
CL
+
1.000"
MAX
0.330"
MAX
0.425"
0.375"
0.250"
CL
0.080"
0.125"
0.050"
TYP
4.250"
3.985"
ACCUTEK MICROCIRCUIT CORPORATION
BUSINESS CENTER at NEWBURYPORT
2 NEW PASTURE ROAD, SUITE 1
NEWBURYPORT, MA 01950-4054
PHONE:
978-465-6200
FAX:
978-462-3396
Email:
sales@accutekmicro.com
Internet:
www.accutekmicro.com
Accutek reserves the right to make changes in specifications at any time
and without notice. Accutek does not assume any responsibility for the
use of any circuitry described; no circuit patent licenses are implied. Pre-
liminary data sheets contain minimum and maximum limits based upon
design objectives, which are subject to change upon full characterization
over the specific operating conditions.
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