ACCUTEK AK5322048

Accutek
Microcircuit
Corporation
AK5321024W
1,048,576 Word by 32 Bit CMOS
Dynamic Random Access Memory
DESCRIPTION
The Accutek AK5321024W high density memory module is a
CMOS Dynamic RAM organized in 1024K x 32 bit words. The
module consists of eight standard 1 Meg x 4 DRAMs in plastic SOJ
packages. The assembly has eight drams mounted on the front
surface of a printed circuit board with a low profile height of only
0.875" in a 72 pin leadless SIM configuration. 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 AK5321024W is identical to eight 1 Meg x 4
DRAMs. There are four CAS lines and two RAS lines. Independent
byte control is accomplished by four CAS lines. Each separate CAS
line controls two of the 1 Meg x 4 DRAMs to form an 8 bit byte. The
bank of 32 bits is controlled by the two RAS lines. A sixteen bit data
path can be produced by connecting DQ0 to DQ16, DQ1 to DQ17,
etc. and alternately strobing RAS0 with RAS2.
+
+
1
·
·
·
·
Available in Fast Page Mode and EDO
Available in leadless SIM or leaded ZIP versions
Downward compatible with AK532512 and AK532256
Upward compatible with AK5322048, AK5324096 and
AK5328192
· Operating free air temperature 00C to 700C
FEATURES
·
·
·
·
·
1,048,576 x 32 bit organization
Low profile board height of 0.875 inch
72 pad Single In-Line Module
Multiple CAS and RAS lines allow x16 or x32 bit widths
Power
5.28 Watt Max Active (60nS)
4.40 Watt Max Active (70 nS)
44 mW Max Standby
· CAS-before-RAS, RAS-only or hidden refresh
· Single 5 Volt Power Supply
· 1024 Refresh Cycles, 16 mSEC
PIN NOMENCLATURE
A0 - A 9
Address Inputs
DQ0 - DQ31
Data In/Data Out
CAS0 - CAS3
Column Address Strobe
RAS0 & RAS2
Row Address Strobe
WE
Write Enable
PD1 - PD4
Presence Detect
Vcc
5v Supply
Vss
Ground
NC
No Connect
MODULE OPTIONS
72
ADDITIONAL OPTIONS AVAILABLE
·
·
·
·
·
256K x 32 version, AK532256
512K x 32 version, AK532512
2 Meg x 32 version, AK5322048
4 Meg x 32 version, AK5324096
8 Meg x 32 version, AK5328192
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
Presence Detect
Leadless SIM: AK5321024W
PD1
PD2
PD3
PD4
-60
Vss
Vss
NC
NC
-70
Vss
Vss
Vss
NC
Symbol
NC
DQ4
DQ20
DQ5
DQ21
DQ6
DQ22
DQ7
DQ23
A7
NC
Vcc
A8
A9
NC
RAS2
NC
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
NC
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
A0 - A9
RAS
CAS DQ0 - DQ3
WE
OE
DQ24 - DQ27
A0 - A9
RAS
CAS DQ0 - DQ3
WE
OE
DQ20 - DQ23
A0 - A9
RAS
CAS DQ0 - DQ3
WE
OE
DQ16 - DQ19
A0 - A9
RAS
CAS DQ0 - DQ3
WE
OE
DQ12 - DQ15
A0 - A9
RAS
CAS DQ0 - DQ3
WE
OE
DQ8 - DQ11
A0 - A9
RAS
CAS DQ0 - DQ3
WE
OE
DQ4 - DQ7
A0 - A9
RAS
CAS DQ0 - DQ3
WE
OE
DQ0 - DQ4
OE
OE
CAS3
OE
OE
RAS2
CAS2
OE
OE
CAS1
OE
OE
A0 - A9
RAS0
CAS0
WE
10
A0 - A9
RAS
CAS DQ0 - DQ3
WE
OE
DQ28 - DQ31
FUNCTIONAL DIAGRAM
MECHANICAL DIMENSIONS
4.250"
0.200"
MAX
3.985"
0.875"
MAX
+
0.425"
0.375"
+
72
0.250"
1
0.080"
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
0.050"
TYP
0.125"
CL CL
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.