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PDF AK5322048 Data sheet ( Hoja de datos )
| Número de pieza | AK5322048 | |
| Descripción | 2097152 Word by 32 Bit CMOS Dynamic Random Access Memory | |
| Fabricantes | ACCUTEK | |
| Logotipo |  |
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ACCUTEK
MICROCIRCUIT CORPORATION
AK5322048W
2,097,152 Word by 32 Bit CMOS
Dynamic Random Access Memory
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.
+
1
+
72
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
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 0oC to 70oC
· Single 5 Volt Power Supply
· 2048 Refresh Cycles
· Available in Fast Page Mode EDO 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
PIN NOMENCLATURE
PIN ASSIGNMENT
DQ0 - DQ31
A0 - A9
CAS0 - CAS3
RAS0 - RAS3
WE
PD1 - PD4
Vcc
Vss
NC
Data In/Data Out
Address Inputs
Column Address Strobe
Row Address Strobe
Write Enable
Presence Detect
5V Supply
Ground
No Connect
MODULE OPTIONS
Leadless SIM: AK5322048W
Leaded ZIP: AK5322048Z
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
-60 -70
PD1 Vss Vss
PD2 Vss Vss
PD3 NC Vss
PD4
NC
NC
-80
Vss
Vss
NC
Vss
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
-60 -70 -80
PD1
NC
NC
NC
PD2
NC
NC
NC
PD3 NC Vss NC
PD4
NC
NC
Vss
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