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.
1
72
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.
· 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
FEATURES
· 8,388,608 x 36 bit organization
· 72 pad Single In-Line Module
8Meg x 36 CMOS Dynamic RAM, SIM, Page Mode, Commercial 70
nSEC Access Time
· Multiple CAS and RAS lines allow x18 or x36 bit widths
· CAS-before-RAS, RAS-only or hidden refresh
· Power
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
7.30 Watt Max Active (60nS)
6.68 Watt Max Active (70 nS)
252 mW Max Standby
· Operating free air temperature 0oC to 70oC
PIN NOMENCLATURE
PIN ASSIGNMENT
DQ0 - DQ35
Data In/Data Out
PIN #
1
SYMBOL
Vss
PIN #
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
SYMBOL
A10
PIN #
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
SYMBOL
DQ17
DQ35
VssV
CAS0
CAS2
CAS3
CAS1
RAS0
RAS1
NC
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
A
A
- A , 2K Refresh Address Inputs
10
0
0
2
DQ0
DQ18
DQ1
DQ19
DQ2
DQ20
DQ3
DQ21
Vcc
DQ4
DQ22
DQ5
DQ23
DQ6
DQ24
DQ7
DQ25
A7
3
- A , 4K Refresh Address Inputs
11
4
CAS0 - CAS3
RAS0 - RAS3
WE
Column Address Strobe
Row Address Strobe
Write Enable
5
6
DQ32
DQ14
DQ33
DQ15
DQ34
DQ16
NC
7
8
9
PD1 - PD4
Vcc
Presence Detect
5v Supply
10
11
12
13
14
15
16
17
18
NC
A11
WE
A0
Vcc
NC
A1
A8
DQ9
PD1
Vss
Ground
A2
A9
DQ27
DQ10
DQ28
DQ11
DQ29
PD2
NC
No Connect
A3
RAS3
RAS2
DQ26
DQ8
PD3
A4
PD4
A5
NC
A6
Vss
MODULE OPTIONS
Presence Detect - 8 Meg x 36
4 Meg x 36
Leadless SIM: AK5368192W
Leaded ZIP: AK5368192Z
-60
NC
Vss
NC
NC
-70
NC
Vss
Vss
NC
-60
Vss
NC
NC
NC
-70
PD1
PD2
PD3
PD4
Vss
NC
Vss
NC