MICROCIRCUIT CORPORATION
DESCRIPTION
The Accutek AK5321024N high density memory module is a
CMOS dynamic RAM organized in 1024K x 32 bit words. The mod-
ule consists of two standard 1 Meg x 16 DRAMs in plastic TSOP
packages. The assembly has 2 drams mounted on the front side of
a printed circuit board in a 72 pad leadless Dual Row Sodim config-
uration.
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 AK5321024N is identical to two 1Meg x 16
Drams. There are four CAS lines and two RAS lines. On each bank
of 1Meg x 32, independent byte control is accomplished by four CAS
lines. Each seperate CAS line controls one byte of the 1Meg x 16
Dram. A sixteen bit data path can be produced by connecting DQ
0
to DQ
16
, DQ
1
to DQ
17
etc. and alternately strobing RAS
0
with RAS
2
.
Front
Side
ACCUTEK
AK5321024N
1,048,576 Word by 32 Bit CMOS
Dynamic Random Access Memory
1
2
71
72
Back
Side
FEATURES
·
1,048,576 x 32 bit organization
·
72 pad Dual Row Sodim Module
·
Multiple CAS and RAS lines allow x16 or x32 bit widths
·
CAS-before-RAS, RAS-only or hidden refresh
·
Operating free air temperature 0
o
C to 70
o
C
·
Single 5 Volt Power Supply
·
1024 Refresh Cycles, 16 mSEC
·
Available in Fast Page Mode and Static Column Mode
versions
·
Power
1.76 Watt Max Active (60nS)
1.65 Watt Max Active (70 nS)
1.54 Watt Max Active (80 nS)
11 mW Max StandbyAvailable
ADDITIONAL OPTIONS AVAILABLE
2 Meg x 32 version, AK5322048N
PIN NOMENCLATURE
DQ
0
- DQ
31
A
0
- A
9
CAS
0
- CAS
3
RAS
0
, RAS
2
WE
PD
0
- PD
6
Vcc
Vss
NC
Data In/Data Out
Address Inputs
Column Address Strobe
Row Address Strobe
Write Enable
Presence Detect
5v Supply
Ground
No Connect
PIN ASSIGNMENT
PIN #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
SYMBOL
Vss
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
Vcc
PD0
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
NC
DQ8
DQ9
DQ10
DQ11
DQ12
DQ13
DQ14
A7
NC
Vcc
A8
A9
NC
RAS2
DQ15
NC
PIN #
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
SYMBOL
DQ16
DQ17
Vss
CAS0
CAS2
CAS3
CAS1
RAS0
NC
NC
WE
NC
DQ18
DQ19
DQ20
DQ21
DQ22
DQ23
PIN #
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
SYMBOL
NC
DQ24
DQ25
DQ26
DQ28
DQ27
Vcc
DQ29
DQ30
DQ31
NC
PD1
PD2
PD3
PD4
PD5
PD6
Vss
MODULE OPTIONS
Leadless SODIM: AK5321024N
Presence Detect -
Access
Time
PD
0
-60
NC
-70
NC
PD
1
Vss
Vss
PD
2
Vss
Vss
PD
3
NC
NC
PD
4
NC
Vss
PD
5
NC
NC
PD
6
NC
NC
ACCUTEK [ ACCUTEK MICROCIRCUIT CORPORATION ]
