ak532256aw Accutek Microcircuit Corporation, ak532256aw Datasheet
ak532256aw
Manufacturer Part Number
ak532256aw
Description
262,144 Word By 32 Bit Cmos Accutek Dynamic Random Access Memory
Manufacturer
Accutek Microcircuit Corporation
Datasheet
1.AK532256AW.pdf
(2 pages)
The Accutek AK532256AW high density memory module is a
CMOS dynamic RAM organized in 265K x 32 bit words. The module
consists of two standard 256K x 16 bits DRAMs in plastic SOJ pack-
ages. The assembly has 2 DRAMs mounted on the front 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 AK532256AW is identical to eight 256K x 4
Drams. There are four CAS lines and two RAS lines. On each bank
of 256K x 32, independent byte control is accomplished by four CAS
lines. Each seperate CAS line controls one byte of the 256K x 16
Dram.
· 262,144 x 32 bit organization
· 72 pad Single In-Line Module
· CAS-before-RAS, RAS-only or hidden refresh
· Operating free air temperature 0
· Single 5 Volt Power Supply
· 1024 Refresh Cycles, 16 mSEC
· Available in Fast Page Mode
· Power: 2.090 Watt Max Active (50 nS)
DQ
A
CAS
RAS
WE
PD
Vcc
Vss
NC
Leadless SIM: AK532256AW
Leaded ZIP: AK532256AZ
DESCRIPTION
FEATURES
PIN NOMENCLATURE
MODULE OPTIONS
0
- A
1
0
0
0
- PD
- DQ
, RAS
8
- CAS
MICROCIRCUIT CORPORATION
ACCUTEK
4
31
1.870 Watt Max Active (60 nS)
1.760 Watt Max Active (70 nS)
22 mW Max Standby
2
3
Data In/Data Out
Address Inputs
Column Address Strobe
Row Address Strobe
Write Enable
Presence Detect
5v Supply
Ground
No Connect
o
C to 70
o
C
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
DDQ17
DQ16
DQ18
DQ19
Vss
DQ0
DQ1
DQ2
DQ3
-60
NC
NC
NC
Vss
Vcc
NC
A0
A1
A2
A3
A4
A5
A6
Vss
Vss
-70
NC
NC
· Available in Fast Page Mode or EDO
· Upward compatible with AK532512W, AK5321024W,
· 256K x 36 version, AK536256W
· 512K x 32 version, AK532512W
· 512K x 36 version, AK536512W
PIN #
ADDITIONAL OPTIONS AVAILABLE
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
AK5322048W, AK5324096W and AK5328192W
+
1
Vss
Vss
-80
NC
NC
SYMBOL
DQ20
DQ21
DQ22
DQ23
RAS2
DQ4
DQ5
DQ6
DQ7
Dynamic Random Access Memory
Vcc
NC
NC
NC
NC
NC
NC
A7
A8
262,144 Word by 32 Bit CMOS
PIN #
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
SYMBOL
CAS0
CAS2
CAS3
CAS1
RAS0
DQ24
DQ25
DQ10
DQ26
DQ8
DQ9
Vss
WE
NC
NC
NC
NC
NC
AK532256AW
PIN #
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
SYMBOL
DQ11
DQ27
DQ12
DQ28
DQ29
DQ13
DQ30
DQ14
DQ31
DQ15
PD1
PD2
PD3
PD4
Vcc
Vss
NC
NC
72
+
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ak532256aw Summary of contents
Page 1
... 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 AK532256AW is identical to eight 256K x 4 Drams. There are four CAS lines and two RAS lines. On each bank of 256K x 32, independent byte control is accomplished by four CAS lines ...
Page 2
FUNCTIONAL DIAGRAM MECHANICAL DIMENSIONS 0.700" 0.425" MAX 0.375" 0.250" ACCUTEK 5 NEW PASTURE ROAD NEWBURYPORT, MA 01950-4040 PHONE: 978-465-6200 Email: MICROCIRCUIT CORPORATION Internet: www.accutekmicro.com 4.250" 3.985" 0.080" Accutek reserves the right to make changes ...