AK5321024W Datasheet, PDF (1/2 Pages) ACCUTEK MICROCIRCUIT CORPORATION – 1,048,576 Word by 32 Bit CMOS Dynamic Random Access Memory

Accutek
Microcircuit
Corporation
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 applica-
tions 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.
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
AK5321024W
1,048,576 Word by 32 Bit CMOS
Dynamic Random Access Memory
+
+
1
72
· 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
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 NOMENCLATURE
A0 - A9
DQ0 - DQ31
CAS0 - CAS3
RAS0 & RAS2
WE
PD1 - PD4
Vcc
Vss
NC
Address Inputs
Data In/Data Out
Column Address Strobe
Row Address Strobe
Write Enable
Presence Detect
5v Supply
Ground
No Connect
MODULE OPTIONS
Leadless SIM: AK5321024W
PIN ASSIGNMENT
Pin #
1
Symbol
Vss
2
DQ0
3
DQ16
4
DQ1
5
DQ17
6
DQ2
7
DQ18
8
DQ3
9
DQ19
10
Vcc
11
NC
12
A0
13
A1
14
A2
15
A3
16
A4
17
A5
18
A6
Presence Detect
-60
PD1
Vss
PD2
Vss
PD3
NC
PD4
NC
Pin #
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
-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