ak536512w Accutek Microcircuit Corporation, ak536512w Datasheet
ak536512w
Manufacturer Part Number
ak536512w
Description
524,288 Word By 36 Bit Cmos Accutek Dynamic Random Access Memory
Manufacturer
Accutek Microcircuit Corporation
Datasheet
1.AK536512W.pdf
(2 pages)
The Accutek AK536512W high density memory module is a CMOS
dynamic RAM organized in 512K x 36 bit words. The module con-
sists of sixteen standard 256K x 4 DRAMs in plastic SOJ packages
and eight 256K x 1 DRAMs in PLCC packages. The assembly has
12 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.
The operation of the AK536512 is identical to sixteen 256K x 4 plus
eight 256K x 1 DRAMs. There are four CAS lines and four RAS
lines. On each bank of 256K x 36, independent byte control is ac-
complished by four CAS lines. Each separate CAS line controls four
256K x 4 DRAMs and two 256K x 1 DRAMs 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 connecting DQ
strobing RAS
· 524,288 x 36 bit organization
· 72 pad Single In-Line Module
· Multiple CAS and RAS lines allow x18 or x36 bit widths
· CAS-before-RAS refresh
· Operating free air temperature 0
DQ
A
CAS
RAS
WE
PD
Vcc
Vss
NC
Leadless SIM: AK536512W
Leaded ZIP: AK536512Z
DESCRIPTION
FEATURES
PIN NOMENCLATURE
MODULE OPTIONS
0
- A
0
0
0
- DQ
8
- CAS
- RAS
MICROCIRCUIT CORPORATION
ACCUTEK
35
3
3
0
with RAS
0
Data In/Data Out
Address Inputs
Column Address Strobe
Row Address Strobe
Write Enable
Presence Detect
5v Supply
Ground
No Connect
to DQ
1
and RAS
18
, DQ
1
o
2
C to 70
to DQ
with RAS
19
o
C
, etc. and alternately
3
.
Presence Detect -
PIN ASSIGNMENT
PIN #
10
11
12
13
14
15
16
17
18
1
2
3
4
5
6
7
8
9
PD1
PD2
PD3
PD4
SYMBOL
DQ18
DQ19
DQ20
DQ21
Vss
DQ0
DQ1
DQ2
DQ3
-60
NC
NC
NC
Vss
Vcc
NC
A0
A1
A2
A3
A4
A5
A6
Vss
Vss
-70
NC
NC
· Single 5 Volt Power Supply
· Power
· 512 Refresh Cycles, 8 mSEC
· Available in Fast Page Mode and Static Column Mode versions
· Downward compatible with AK536256W
· Upward compatible with AK5361024W, AK5362048W,
PIN #
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
5.41 Watt Max Active (70nS)
4.75 Watt Max Active (80 nS)
4.09 Watt Max Active (100 nS)
132 mW Max Standby
AK5364096W and AK5368192W
Vss
Vss
-80
NC
NC
SYMBOL
DQ22
DQ23
DQ24
DQ25
RAS3
RAS2
DQ26
DQ4
DQ5
DQ6
DQ7
DQ8
Dynamic Random Access Memory
Vcc
NC
NC
NC
A7
A8
524,288 Word by 36 Bit CMOS
PIN #
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
SYMBOL
DQ17
DQ35
CAS0
CAS2
CAS3
CAS1
RAS0
RAS1
DQ27
DQ10
DQ28
DQ11
DQ29
DQ9
Vss
WE
NC
NC
PIN #
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
AK536512W
SYMBOL
DQ12
DQ30
DQ13
DQ31
DQ32
DQ14
DQ33
DQ15
DQ34
DQ16
PD1
PD2
PD3
PD4
Vcc
Vss
NC
NC
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ak536512w Summary of contents
Page 1
... ACCUTEK MICROCIRCUIT CORPORATION DESCRIPTION The Accutek AK536512W high density memory module is a CMOS dynamic RAM organized in 512K x 36 bit words. The module con- sists of sixteen standard 256K x 4 DRAMs in plastic SOJ packages and eight 256K x 1 DRAMs in PLCC packages. The assembly has 12 drams mounted on each side of a printed circuit board pad leadless SIM configuration ...
Page 2
FUNCTIONAL DIAGRAM MECHANICAL DIMENSIONS 1.000" MAX + 0.425" 0.375" 0.250" ACCUTEK 5 NEW PASTURE ROAD NEWBURYPORT, MA 01950-4040 PHONE: 978-465-6200 Email: MICROCIRCUIT CORPORATION Internet: www.accutekmicro.com 4.240" 4.260" 3.979" 3.989" 1 0.125" 0.080" Accutek reserves the right ...