ACCUTEK AK536256W

Accutek
Microcircuit
Corporation
AK5361024W
1,048,576 Word by 36 Bit CMOS
Dynamic Random Access Memory
DESCRIPTION
The Accutek AK5361024W high density memory module is a
CMOS Dynamic RAM organized in 1024K x 36 bit words. The module consists of eight standard 1 Meg x 4 DRAMsin plastic SOJ packages mounted on the front side of a printed circuit board and four 1
Meg x 1 DRAMs in plastic SOJ packages mounted on the back side
of a printed circuit board with a low profile height of only 0.875 inch
in a 72 pin leadless SIM configuration.
+
+
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 AK5361024W is identical to eight 1 Meg x 4
plus four 1 Meg x 1 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 1Meg x 4 DRAMs, along with a
1 Meg x 1 DRAM with data in tied to data out to form a 9 bit byte. The
bank of 36 bits is controlled by the two RAS lines. An eighteen bit
data path can be produced by connecting DQ0 to DQ18, DQ1 to
DQ19, etc. and alternately strobing RAS0 with RAS2.
FEATURES
·
·
·
·
·
·
· Single 5 Volt Power Supply
· 1024 Refresh Cycles, 16 mSEC
· Available in Fast Page Mode and Static Column Mode versions
· Available in leadless SIM or leaded ZIP versions
· Downward compatible with AK536512W and AK536256W
· Upward compatible with AK5362048W, AK5364096W and
AK5368192W
· Operating free air temperature 00C to 700C
1,048,576 x 36 bit organization
Low profile board height of 0.875 inch
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
7.26 Watt Max Active (60nS)
6.16 Watt Max Active (70 nS)
5.28 Watt Max Active (80 nS)
66 mW Max Standby
PIN NOMENCLATURE
DQ0 - DQ35
Data In/Data Out
A0 - A 9
Address Inputs
CAS0 - CAS3
Column Address Strobe
RAS0 & RAS2
Row Address Strobe
WE
Write Enable
PD1 - PD4
Presence Detect
Vcc
5v Supply
Vss
Ground
NC
No Connect
MODULE OPTIONS
Leadless SIM: AK5361024W
PIN ASSIGNMENT
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
Symbol
NC
DQ4
DQ22
DQ5
DQ23
DQ6
DQ24
DQ7
DQ25
A7
NC
Vcc
A8
A9
NC
RAS2
DQ26
DQ8
Presence Detect
PD1
PD2
PD3
PD4
-60
Vss
Vss
NC
NC
-70
Vss
Vss
Vss
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
DQ17
DQ35
Vss
CAS0
CAS2
CAS3
CAS1
RAS0
NC
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
FUNCTIONAL DIAGRAM
CAS0
RAS0
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
CAS1
A0 - A9
RAS
CAS
WE
DQ1
DQ2
DQ3
DQ4 OE
A0 - A9
RAS
CAS
WE
DQ1
DQ2
DQ3
DQ4 OE
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
CAS2
RAS2
A0 - A9
RAS D
CAS
WE Q
A0 - A9
RAS
CAS
WE
DQ1
DQ2
DQ3
DQ4 OE
A0 - A9
RAS
CAS
WE
DQ1
DQ2
DQ3
DQ4 OE
DQ9
DQ10
DQ11
DQ12
DQ13
DQ14
DQ15
DQ16
A0 - A9
RAS D
CAS
WE Q
CAS3
A0 - A9
RAS
CAS
WE
DQ1
DQ2
DQ3
DQ4 OE
A0 - A9
RAS
CAS
WE
DQ1
DQ2
DQ3
DQ4 OE
DQ18
DQ19
DQ20
DQ21
DQ22
DQ23
DQ24
DQ25
A0 - A9
RAS D
CAS
WE Q
A0 - A9
RAS
CAS
WE
DQ1
DQ2
DQ3
DQ4 OE
A0 - A9
RAS
CAS
WE
DQ1
DQ2
DQ3
DQ4 OE
DQ27
DQ28
DQ29
DQ30
DQ31
DQ32
DQ33
DQ34
A0 - A9
RAS D
CAS
WE Q
WE
DQ8
DQ17
DQ26
DQ35
MECHANICAL DIMENSIONS
+
+
4.250"
0.330"
MAX
3.850"
0.875"
MAX
0.425"
0.375"
+
+
0.250"
0.080"
ACCUTEK MICROCIRCUIT CORPORATION
BUSINESS CENTER at NEWBURYPORT
2 NEW PASTURE ROAD, SUITE 1
NEWBURYPORT, MA 01950-4054
PHONE:
978-465-6200
FAX: 978-462-3396
E-Mail:
sales@accutekmicro.com
Internet:
www.accutekmicro.com
0.050"
TYP
0.125"
CL CL
CL CL
Accutek reserves the right to make changes in specifications at any time and without notice.
Accutek does not assume any responsibility for the use of any circuitry described; no circuit
patent licenses are implied. Preliminary data sheets contain minimum and maximum limits
based upon design objectives, which are subject to change upon full characterization over
the specific operating conditions.