DESCRIPTION
Accutek
Microcircuit
Corporation
AK61664Z
16,384 x 16 Bit CMOS/BiCMOS
Static Random Access Memory
The Accutek AK61664 SRAM Module consists of fast high perfor-
mance SRAMs mounted on a low profile 40 pin ZIP PCB. The mod-
ule utilizes two 28 pin 64K x 4 SRAMs in 300 mil SOJ packages and
two decoupling capacitor chips mounted on each side of a printed
circuit board.
The SRAMs are interconnected on the module to have common I/O
functions, single output enable functions and common chip select.
The modules can be supplied in a variety of access time values from
8 nSEC to 45 nSEC in CMOS or BiCMOS technology.
The Accutek module is designed for the lowest height off the board,
consistent with the availability of commonly available SRAM SOJ
package configurations.
Front View
40-Pin ZIP
1
40
FEATURES
·
16,384 x 32 SRAM module in high density configuration
·
40 pin ZIP format
·
Common I/O, single OE functions and common chip select CE
Function
·
Low height 0.500 inch ZIP maximum
·
Fast Access Times range from 12 nSEC to 45 nSEC, CMOS or
BiCMOS
·
TTL compatible inputs and outputs
·
Single 5 volt power supply
·
Power (Typical)
CMOS
3.2 Watt Active
1.2 Watt Standby
·
Operating temperature range in free air, 0
0
C to 70
0
C
BiCMOS
4.8 Watt Active
1.3 Watt Standby
PIN NOMENCLATURE
A
0
- A
15
WE
OE
CE
DQ
1
- DQ
16
Vcc
Vss
NC
Address Inputs
Write Enable
Output Enable
Chip Select
Data In/Data Out
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
19
20
SYMBOL
DQ
16
Vss
DQ
15
DQ
1
DQ
14
DQ
2
DQ
13
DQ
3
Vss
DQ
4
A
15
A
0
A
14
A
1
A
13
A
2
A
12
A
3
Vcc
Vss
PIN #
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
SYMBOL
A
11
A
4
A
10
A
5
A
9
A
6
A
8
A
7
DQ
12
DQ
5
DQ
11
DQ
6
Vss
DQ
7
DQ
10
DQ
8
DQ
9
OE
CE
WE
FUNCTIONAL DIAGRAM
MODULE OPTIONS
Leaded ZIP: AK61664Z
Single In-Line Package
ORDERING INFORMATION
Position
1
MECHANICAL DIMENSIONS
Inches
1 2 3 4 5 6 7 8
PART NUMBER CODING INTERPRETATION
.050 x .050
ANGLE NOTCH
Product
AK = Accutek Memory
2 Type
4 = Dynamic RAM
5 = CMOS Dynamic RAM
6 = Static RAM
3 Organization/Word Width
1 = by 1 16 = by 16
4 = by 4 32 = by 32
8 = by 8 36 = by 36
9 = by 9
4 Size/Bits Depth
64 = 64K
4096 = 4 MEG
256 = 256K
8192 = 8 MEG
1024 = 1 MEG 16384 = 16 MEG
5 Package Type
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)
6 Special Designation
P = Page Mode
N = Nibble Mode
K = Static Column Mode
W = Write Per Bit Mode
V = Video Ram
7 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
8 Speed (first two significant digits)
DRAMS
SRAMS
50 = 50 nS
8 =
8 nS
60 = 60 nS
12 = 12 nS
70 = 70 nS
15 = 15 nS
80 = 80 nS
20 = 20 nS
The numbers and coding on this page do not include all varia-
tions available but are shown as examples of the most widely
used variations. Contact Accutek if other information is re-
quired.
0.125
0.155
0.500
MAX
C
L
0.120
0.130
CC
LL
1
2.100
MAX
0.050
TYP
0.100
TYP
C C
L L
EXAMPLES:
AK61664Z-12
64K x 16, 12 nSEC SRAM ZIP Module
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: accutek@seacoast.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.
0.350
MAX
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