DESCRIPTION
MICROCIRCUIT
ACCUTEK
AK584096BS / AK584096BG
4,194,304 Word by 8 Bit CMOS
Dynamic Random Access Memory
Front View
30-Pin SIM
+
+
1
30
CORPORATION
The Accutek AK584096 high density memory module is a CMOS
dynamic RAM organized in 4 Meg x 8 bit words. The assembly con-
sists of two 4 Meg x 4 DRAMS, mounted on the front side of a printed
circuit board in 30 pad SIM (leadless) or 30 pin SIP (leaded) configu-
ration with JEDEC-standard pinouts. Designed especially for
low-height applications such as VMEbus boards, this low profile
module is 0.550 inch high.
The operation is identical to eight 4 Meg x 1 DRAMs. The data in-
put/output is brought out separately for each bit, with common RAS ,
CAS and WE control. This common I/O feature dictates the use of
early-write cycles to prevent contention of Data In and Data Out.
Since the Write-Enable (WE) signal must always go low before CAS
in a write cycle, Read-Write and Read-Modify-Write operation is not
possible.
30-Pin SIP
+
+
1
FEATURES
·
4,194,304 x 8 bit organization
·
Low Profile 30 pad (SIM) Single In-Line Memory
·
Low Profile 30 pin (SIP) Single In-Line package
·
JEDEC standard pinout
·
Common CAS and RAS control for eight common DQ Lines
·
CAS-before-RAS refresh
·
Refresh cycle 2048 cycles in 32 mSEC
·
Power
0.095 Watt Max Active, 70 nSEC
1.060 Watt Max Active, 60 nSEC
11.0 mWatt Max Standy
·
Operating free air temperature 0
0
C to 70
0
C
·
Downward compatible with AK581024 and AK58256
·
Upward compatible with AK5816384
·
Fast Page Mode and Static Column Mode versions available,
nibble mode is not possible
PIN NOMENCLATURE
A
0
- A
10
RAS
0
CAS
WE
OE
DQ
1
- DQ
8
Vcc
Vss
NC
Address Inputs
Row Address Strobe
Column Address Strobe
Write Enable
Output Enable
Data In/Data Out
5v Supply
Ground
No Connect
PIN ASSIGNMENT
Pi
n#
1
2
3
4
5
6
7
8
9
10
11
12
13
FUNCTIONAL DIAGRAM
Symbol
DQ5
A8
A9
A10
DQ6
WE
Vss
DQ7
NC
DQ8
NC
RAS
0
NC
NC
Vcc
Symbol
Vcc
CAS
DQ1
A0
A1
DQ2
A2
A3
Vss
DQ3
A4
A5
DQ4
A6
A7
Pi
n#
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
MODULE OPTIONS
Leadless SIM: AK584096BS
Leaded SIP: AK584096BG
14
15
ORDERING INFORMATION
PART NUMBER CODING INTERPRETATION
Position
1
Product
AK = Accutek Memory
2
Type
4 = Dynamic RAM
5 = CMOS Dynamic RAM
6 = Static RAM
Organization/Word Width
1 = by 1 16 = by 16
4 = by 4 32 = by 32
8 = by 8 36 = by 36
9 = by 9
Size/Bits Depth
64 = 64K
256 = 256K
1024 = 1 MEG
Package Type
4096 =
8192 =
16384 =
4 MEG
8 MEG
16 MEG
1 2 3 4 5 6 7 8
EXAMPLES:
AK584096BGP-70
4 Meg x 8, CMOS Dynamic RAM, Leaded SIP, Page Mode, Com-
mercial, 70 nSEC Access Time
AK584096BSP-60
4 Meg x 8, CMOS Dynamic RAM, Leadless SIM, Page Mode, Com-
mercial, 60 nSEC Access Time
MECHANICAL DIMENSIONS
Inches
3
4
5
6
G = Single In-Line Package (SIP)
S = Single In-Line Module (SIM)
D = Dual In-Line Package (DIP)
W = .050 inch Pitch Edge Connect
Z = Zig-Zag In-Line Package (ZIP)
Special Designation
P = Page Mode
N = Nibble Mode
K = Static Column Mode
W = Write Per Bit Mode
V = Video Ram
Separator
- = Commercial 0
0
C to +70
0
C
M = Military Equivalent Screened
(-55
0
C to +125
0
C)
I = Industrial Temperature Tested
(-45
0
C to +85
0
C)
X = Burned In
Speed (first two significant digits)
DRAMS
SRAMS
50 = 50 nS
8 =
8 nS
60 = 60 nS
10 = 10 nS
70 = 70 nS
12 = 12 nS
80 = 80 nS
15 = 15 nS
.550"
MAX
.550"
MAX
0.100"
0.100"
C C
L L
+
1
+
C C
L L
1
3.100"
MAX
3.505"
MAX
7
+
30
+
8
0.200"
MAX
The numbers and coding on this page do not include all variations avail-
able but are show as examples of the most widely used variations.
Contact Accutek if other information is required.
MICROCIRCUIT CORPORATION
ACCUTEK
5 NEW PASTURE ROAD
NEWBURYPORT, MA 01950-4040
PHONE: 978-465-6200 FAX: 978-462-3396
Email: sales@accutekmicro.com
Internet: www.accutekmicro.com
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 im-
plied. 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.
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