AK63264W_09 Datasheet, PDF (1/2 Pages) ACCUTEK MICROCIRCUIT CORPORATION – Static Random Access Memory

ACCUTEK
AK63264W/AK63264Z
65,536 x 32 Bit CMOS/BiCMOS
Static Random Access Memory
MICROCIRCUIT CORPORATION
DESCRIPTION
Front View
The Accutek AK63264 SRAM Module consists of fast high perfor-
64-Pin SIM
mance SRAMs mounted on a low profile, 64 pin SIM or ZIP Board.
The module utilizes eight 28 pin 64K x 4 SRAMs in SOJ packages
+
+
and four decoupling capacitors on each side of a printed circuit
board.
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32 33
64
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 12 nSEC to
45 nSEC in CMOS or BiCMOS technology.
64-Pin ZIP
The Accutek module is designed to have a maximum seated height
of 0.600 inch SIM or 0.500 inch ZIP to provide for the lowest height
off the board. By offset-mounting the back surface SRAMs on the
SIM version the module can be mounted in either angled or
straight-up SIM sockets. Each conforms to JEDEC - standard sizes
and pin-out configurations. Using two pins for module memory den-
sity identification, PD0 and PD1, minimizes interchangeability and
design considerations when changing from one module size to the
other in customer applications.
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32 33
64
· Presence Detect, PD₀ and PD₁ for identifying module density
· Fast Access Times range from 12 nSEC BiCMOS to 45 nSEC
CMOS
· TTL-compatible inputs and outputs
· Single 5 volt power supply - AK63264W, AK63264Z
FEATURES
· 65,536 x 32 bit organization
· JEDEC Standard 64 pin SIM or ZIP format
· Single 3.3 volt power supply - AK63264W/3.3, AK63264Z/3.3
· Operating temperature range in free air, 0⁰C to 70⁰C
ELECTRICAL SPECIFICATIONS
· Common I/O, single OE functions with four separate chip
selects (CE)
· Low height, 0.600 inch SIM or 0.500 inch ZIP maximum
· Upward compatible with 128K x 32 (AK632128), 256K x 32
(AK632256) and 1 Meg x 32 (AK6321024) designs
Timing diagrams and basic electrical characteristics are those of
the standard 64K x 4 SRAMs used to construct these modules.
Accutek’s module design allows the flexibility of selecting indus-
try-compatible 64K x 4 SRAMs from at least seven semiconductor
manufacturers.
PIN NOMENCLATURE
PIN ASSIGNMENT
FUNCTIONAL DIAGRAM
A0 - A15
CE1 - CE4
DQ1 - DQ32
OE
PD0 - PD1
Vcc
Vss
WE
Address Inputs
Chip Enable
Data In/Data Out
Output Enable
Presence Detect
Power Supply
Ground
Write Enable
MODULE OPTIONS
Leadless SIM:
Leaded SIP:
Leaded ZIP:
AK63264W
AK63264G
AK63264Z
PIN # SYMBOL PIN # SYMBOL PIN # SYMBOL PIN # SYMBOL
1
Vss 17
A2
33 CE4 49
A4
2
PD0 18
A9
34 CE3 50
A11
3
PD1
19 DQ13 35
NC
51
A5
4
DQ1 20 DQ5 36
NC
52
A12
5
DQ9 21 DQ14 37
OE
53
Vcc
6
DQ2 22 DQ6 38
Vss 54
A13
7
DQ10 23 DQ15 39 DQ25 55
A6
8
DQ3 24 DQ7 40 DQ17 56 DQ21
9
DQ11 25 DQ16 41 DQ26 57 DQ29
10 DQ4 26 DQ8 42 DQ18 58 DQ22
11 DQ12 27
Vss
43 DQ27 59 DQ30
12 Vcc 28 WE 44 DQ19 60 DQ23
13
A0
29
A15
45 DQ28 61 DQ31
14
A7
30
A14
46 DQ20 62 DQ24
15
A1
31 CE2 47
A3
63 DQ32
16
A8
32 CE1 48
A10
64
Vss
PD0 = Open
PD1 = Vss