Accutek
Microcircuit
Corporation
AK63232W
32,768 x 32 Bit CMOS/BiCMOS
Static Random Access Memory
DESCRIPTION
The Accutek AK63232W SRAM Module consists of fast high perfor-
mance SRAMs mounted on a low profile, 64 pin SIM Board. The
module utilizes four 28 pin 32K x 8 SRAMs in SOJ packages and
four decoupling capacitor chips on one side of the circuit board.
Pin 1
Pin 1
Pin 1
Pin 1
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.
1
The Accutek module is designed for the lowest height off the board,
consistent with the availability of commonly available SRAM SOJ
package configurations. Each conforms to JEDEC - standard sizes
and pin-out configurations. This, along with use of two pins for mod-
ule memory density identification, PD0 and PD1, minimizes
interchangeability and design considerations when changing from
one module size to the other in customer applications.
· Upward compatible with 64k x 32, AK63264W, 256K x 32,
AK6322W and 1 meg x 32, AK6321024W designs
· Presence Detect, PD0 and PD1 for identifying module density
FEATURES
· Fast Access Times range from 12 nSEC BiCMOS to 45 nSEC
CMOS
· 32,768 x 32 bit organization
· JEDEC Standardized 64 pin SIM format
· TTL compatible inputs and outputs
· Common I/O, single OE functions with four separate chip
selects (CE)
· Single 5 volt power supply - AK63232W
· Single 3.3 volt power supply - AK63232W/3.3
· Operating temperature range in free air, 00C to 700C
· Low height, 0.600 inch maximum, for mounting in straight-up or
angled SIM sockets
PIN NOMENCLATURE
PIN ASSIGNMENT
FUNCTIONAL DIAGRAM
PIN #
SYMBOL
PIN #
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
SYMBOL
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
AO-
A14
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
DQ8
A14
A0
-
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
DQ8
A0 - A14
CE1 - CE4
DQ1 - DQ32
OE
Address Inputs
15
1
Vss
A2
OE
OE
Chip Enable
2
PD0
PD1
DQ1
DQ9
DQ2
DQ10
DQ3
DQ11
DQ4
DQ12
Vcc
A9
CE3
A11
WE
WE
3
DQ13
DQ5
DQ14
DQ6
DQ15
DQ7
DQ16
DQ8
Vss
NC
A5
Data In/Data Out
Output Enable
Presence Detect
Power Supply
Ground
CE
4
NC
A12
CE1
CE2
CE3
CE4
5
OE
Vcc
AO-
A14
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
DQ8
PD0 - PD1
Vcc
DQ9
6
Vss
A13
DQ10
DQ11
DQ12
DQ13
DQ14
DQ15
DQ16
OE
7
DQ25
DQ17
DQ26
DQ18
DQ27
DQ19
DQ28
DQ20
A3
A6
WE
8
DQ21
DQ29
DQ22
DQ30
DQ23
DQ31
DQ24
DQ32
Vss
Vss
CE
9
WE
Write Enable
10
11
12
13
14
15
16
AO-
A14
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
DQ8
DQ17
DQ18
DQ19
DQ20
DQ21
DQ22
DQ23
DQ24
MODULE OPTIONS
WE
OE
WE
A0
NC
Leadless SIM: AK63232W
A7
A14
CE
A1
CE2
CE1
Leaded SIP: AK63232G
AO-
A14
A8
A10
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
DQ8
DQ25
DQ26
DQ27
DQ28
DQ29
DQ30
DQ31
DQ32
OE
PD0 = Open
PD1 = Open
WE
CE
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