Download datasheet for AK5322048W by Accutek Microcircuit Corporation

Download datasheet for AK5322048W by Accutek Microcircuit Corporation
AK5322048W
2,097,152 Word by 32 Bit CMOS
Dynamic Random Access Memory
ACCUTEK
MICROCIRCUIT CORPORATION
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 packages. The assembly has eight drams mounted on each side of a
printed circuit board in a 72 pad leadless SIM configuration.
+
+
1
72
This configuration allows socket-mounting of large quantities of
memory in applications where high density and ease of inserting additional 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 DQ1 to
DQ17, DQ2 to DQ18, and alternately strobing RAS0 with RAS1 and
RAS2 with RAS3.
· 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
FEATURES
· 2,097,152 x 32 bit organization
· Upward compatible with AK5324096 and AK5328192
· 72 pad Single In-Line Module
ADDITIONAL OPTIONS AVAILABLE
· Multiple CAS and RAS lines allow x16 or x32 bit widths
·
·
·
·
·
· CAS-before-RAS, RAS-only or hidden refresh
o
o
· Operating free air temperature 0 C to 70 C
· Single 5 Volt Power Supply
· 2048 Refresh Cycles
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
· Available in Fast Page Mode EDO versions
PIN NOMENCLATURE
DQ0 - DQ31
Data In/Data Out
A0 - A9
Address Inputs
CAS0 - CAS3
Column Address Strobe
RAS0 - RAS3
Row Address Strobe
WE
Write Enable
PD1 - PD4
Presence Detect
Vcc
5V Supply
Vss
Ground
NC
No Connect
MODULE OPTIONS
Leadless SIM: AK5322048W
Leaded ZIP: AK5322048Z
PIN ASSIGNMENT
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Symbol
Vss
DQ0
DQ16
DQ1
DQ17
DQ2
DQ18
DQ3
DQ19
Vcc
NC
A0
A1
A2
A3
A4
A5
A6
Pin #
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
Symbol
NC
DQ4
DQ20
DQ5
DQ21
DQ6
DQ22
DQ7
DQ23
A7
NC
Vcc
A8
A9
RAS3
RAS2
NC
NC
Presence Detect -1 Meg x 32
PD1
PD2
PD3
PD4
-60
Vss
Vss
NC
NC
-70
Vss
Vss
Vss
NC
Pin #
37
38
39
40
41
42
43
44
45
46
47
48
46
50
51
52
53
54
Symbol
NC
NC
Vss
CAS0
CAS2
CAS3
CAS1
RAS0
RAS1
NC
WE
NC
DQ8
DQ24
DQ9
DQ25
DQ10
DQ26
Pin #
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
Symbol
DQ11
DQ27
DQ12
DQ28
Vcc
DQ29
DQ13
DQ30
DQ14
DQ31
DQ15
NC
PD1
PD2
PD3
PD4
NC
Vss
Presence Detect - 2 Meg x 32
-80
Vss
Vss
NC
Vss
PD1
PD2
PD3
PD4
-60
NC
NC
NC
NC
-70
NC
NC
Vss
NC
-80
NC
NC
NC
Vss
A0 - A9
RAS
DQ0 - DQ3 CAS
WE
OE
WE
CAS3
A0 - A9
RAS
CAS DQ0 - DQ3
WE
OE
DQ28 - DQ31
A0 - A9
RAS
DQ0 - DQ3 CAS
WE
OE
DQ24 - DQ27
A0 - A9
RAS
CAS DQ0 - DQ3
WE
OE
A0 - A9
RAS
CAS DQ0 - DQ3
WE
OE
RAS2
CAS2
CAS1
A0 - A9
RAS
CAS DQ0 - DQ3
WE
OE
DQ16 - DQ19
DQ20 - DQ23
A0 - A9
RAS
DQ0 - DQ3 CAS
WE
OE
RAS3
A0 - A9
RAS
DQ0 - DQ3 CAS
WE
OE
A0 - A9
RAS
DQ0 - DQ3 CAS
WE
OE
DQ8 - DQ11
DQ12 - DQ15
A0 - A9
RAS
CAS
DQ0 - DQ3
WE
OE
A0 - A9
RAS
CAS
WE
OE
DQ0 - DQ3
A0 - A9
RAS
CAS
DQ0 - DQ3
WE
OE
A0 - A9
RAS
DQ0 - DQ3 CAS
WE
OE
DQ4 - DQ7
A0 - A9
RAS
CAS
DQ0 - DQ3
WE
OE
RAS0
CAS0
A0 - A9
A0 - A9
RAS
CAS
DQ0 - DQ3
WE
OE
DQ0 - DQ3
A0 - A9
RAS
DQ0 - DQ3 CAS
WE
OE
RAS1
FUNCTIONAL DIAGRAM
MECHANICAL DIMENSIONS
4.250"
0.330"
MAX
3.985"
1.000"
MAX
0.425"
0.375"
+
0.250"
+
1
72
0.080"
ACCUTEK
MICROCIRCUIT CORPORATION
0.050"
TYP
0.125"
CL CL
5 NEW PASTURE ROAD
NEWBURYPORT, MA 01950-4040
PHONE: 978-465-6200 FAX: 978-462-3396
Email: [email protected]
Internet: www.accutekmicro.com
CL CL
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. Preliminary 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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