Accutek
Microcircuit
Corporation
AK63264AW
65,536 x 32 Bit CMOS/BiCMOS
Static Random Access Memory
DESCRIPTION
The Accutek AK63264A SRAM Module consists of fast high
performance SRAMs mounted on a low height, 64 pin SIM or ZIP
Board. The module utilizes four 32 pin 64K x 8 SRAMs in 300 mil
SOJ packages and four decoupling capacitors mounted on the front
side of a printed circuit board.
Front View
The SRAMs used have common I/O functions and single output en-
able functions. Also, four separate chip select (CE) connections are
used to independently enable the four bytes. The modules can be
supplied in a variety of access time values from 12nSEC to 35nSEC
in CMOS or BiCMOS technology.
33
32
64
1
The Accutek module is designed to have a maximum seated height
of 0.600 inch to provide for the lowest height off the board. Each
conforms to JEDEC-standard sizes and pin-out configurations.
Using two pins for module density identification, PD0 and PD1, mini-
mizes interchangeability and design considerations when changing
from one module size to the other in customer applications.
· Upward compatible with 128K x 32 (AK632128), 256K x 32
(AK632256),512K x 32 ( AK632512) and 1 Meg x 32
(AK6321024)
· TTL-compatible inputs and outputs
FEATURES
· Single 5 volt power supply - AK63264AW
· Single 3.3 volt power supply - AK63264AW/3.3
· Operating temperature range in free air, 00 to 700C
· 65,536 x 32 bit organization
· JEDEC Standard 64 pin SIM or ZIP format
· Common I/O, single OE fucntions with four separate chip se-
lects (CE)
ELECTRICAL SPECIFICATIONS
· Low height, 0.600 inch maximum
Timing Diagrams and basic electrical characteristics are those of
the standard 64K x 8 SRAMs used to construct these modules.
Accutek’s module design allows the flexibility of selecting indus-
try-compatible 64K x 8 SRAMs from several semiconductor manu-
facturers.
· Presence Detect, PD0 and PD1 for identifying module density
· Downard compatible with 32K x 32 (AK63232W)
· Fast access to,es frp, 12nSEC
PIN NOMENCLATURE
PIN ASSIGNMENT
FUNCTIONAL DIAGRAM
PIN #
1
SYMBOL
Vss
PIN #
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
SYMBOL
A2
PIN #
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
SYMBOL
CE4
PIN #
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
SYMBOL
A4
A0 - A15
CE1 - CE4
DQ1 - DQ32
OE
Address Inputs
Chip Enable
Data In/Data Out
Output Enable
Presence Detect
Power Supply
Ground
2
PD0
PD1
DQ1
DQ9
DQ2
DQ10
DQ3
DQ11
DQ4
DQ12
Vcc
A9
CE3
A11
3
DQ13
DQ5
DQ14
DQ6
DQ15
DQ7
DQ16
DQ8
Vss
NC
A5
4
NC
A12
5
OE
Vcc
PD0 - PD1
Vcc
6
Vss
A13
7
DQ25
DQ17
DQ26
DQ18
DQ27
DQ19
DQ28
DQ20
A3
A6
8
DQ21
DQ29
DQ22
DQ30
DQ23
DQ31
DQ24
DQ32
Vss
Vss
9
WE
Write Enable
No Connect
10
11
12
13
14
15
16
NC
WE
A0
A15
MODULE OPTIONS
A7
A14
A1
CE2
CE1
Leadless SIM: AK63264AW
A8
A10
PD0 = Open
PD1 = Vss