AK5368192W Datasheet, PDF (1/2 Pages) ACCUTEK MICROCIRCUIT CORPORATION – 8,388,608 by 36 Bit CMOS Dynamic Random Access Memory

Accutek
Microcircuit
Corporation
AK5368192W
8,388,608 by 36 Bit CMOS
Dynamic Random Access Memory
DESCRIPTION
The Accutek AK5368192W high density memory module is a
CMOS dynamic RAM organized in 8192K x 36 bit words. The mod-
ule consists of sixteen standard 4 Meg x 4 DRAMs and eight 4 Meg
x 1 DRAMs, each in plastic SOJ packages. The assembly has 14
drams mounted on the front side and 10 drams mounted on the
back side of a printed circuit board in a 72 pad leadless SIM configu-
ration.
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 AK5368192W is identical to sixteen 4M x 4 plus
eight 4M x 1 Drams. There are four CAS lines and four RAS lines.
On each bank of 4M x 36, independent byte control is accomplished
by four CAS lines. Each separate CAS line controls two 4M x 4
Drams along with a 4M x 1 Dram with data in tied to data out to form
a 9 bit byte. Two banks of 36 bits are controlled by the two pairs of
RAS lines. An eighteen bit data path can be produced by connect-
ing DQ₀ to DQ₁₈, DQ₁ to DQ₁₉, etc. and alternately strobing RAS₀
with RAS₁ and RAS₂ with RAS₃.
FEATURES
· 8,388,608 x 36 bit organization
· 72 pad Single In-Line Module
· Multiple CAS and RAS lines allow x18 or x36 bit widths
· CAS-before-RAS, RAS-only or hidden refresh
· Power
7.30 Watt Max Active (60nS)
6.68 Watt Max Active (70 nS)
252 mW Max Standby
· Operating free air temperature 0^oC to 70^oC
+
+
1
72
· Single 5 Volt Power Supply
· 2048 Refresh Cycles, 32 mSEC
· Available in Fast Page Mode and Static Column mode ver-
sions
· Available in leadless (W) or leaded Zip (Z) versions
· Downward compatible with AK5364096W through AK536256W
sizes
EXAMPLES
AK5368192WP-70
8Meg x 36 CMOS Dynamic RAM, SIM, Page Mode, Commercial 70
nSEC Access Time
ADDITIONAL OPTIONS AVAILABLE
· 4 Meg x 36 version, drams on one side only
Reference Part No. AK5364096W4096 Refresh Cycles, 64
mSEC available for all module sizes
PIN NOMENCLATURE
PIN ASSIGNMENT
DQ0 - DQ35
Data In/Data Out
A0 - A10, 2K Refresh Address Inputs
A0 - A11, 4K Refresh 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: AK5368192W
Leaded ZIP: AK5368192Z
PIN #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
SYMBOL
Vss
DQ0
DQ18
DQ1
DQ19
DQ2
DQ20
DQ3
DQ21
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 - 8 Meg x 36
-60
-70
PD1
NC
NC
PD2
Vss
Vss
PD3
NC
Vss
PD4
NC
NC
SYMBOL
A10
DQ4
DQ22
DQ5
DQ23
DQ6
DQ24
DQ7
DQ25
A7
A11
Vcc
A8
A9
RAS3
RAS2
DQ26
DQ8
PIN #
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
4 Meg x 36
-60
-70
Vss
Vss
NC
NC
NC
Vss
NC
NC
SYMBOL
DQ17
DQ35
VssV
CAS0
CAS2
CAS3
CAS1
RAS0
RAS1
NC
WE
NC
DQ9
DQ27
DQ10
DQ28
DQ11
DQ29
PIN #
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
SYMBOL
DQ12
DQ30
DQ13
DQ31
Vcc
DQ32
DQ14
DQ33
DQ15
DQ34
DQ16
NC
PD1
PD2
PD3
PD4
NC
Vss