EDI8F321024CA
1024Kx32 SRAM Module
1024Kx32 Static RAM
CMOS, High Speed Module
Features
The EDI8F321024CA is a high speed 32 megabit Static
RAM module organized as 1024K words by 32 bits. This
moduleisconstructedfromeight1024Kx4StaticRAMsin
SOJ packages on an epoxy laminate (FR4) board.
Four chip enables (EØ-E3) are used to independently
enablethefourbytes. Readingorwritingcanbeexecuted
on individual bytes or any combination of multiple bytes
throughproperuseofselects.
1024Kx32 bit CMOS Static
Random Access Memory
• Access Times: 12, 15ns
• Individual Byte Selects
• Fully Static, No Clocks
• TTL Compatible I/O
TheEDI8F321024CAisofferedina72leadSIMMpackage,
whichenable 32megabits ofmemorytobe placedinless
than1.3squareinchesofboardspace.
AllinputsandoutputsareTTLcompatibleandoperatefrom
asingle5Vsupply.Fullyasynchronous circuitry requires
no clocks or refreshing for operation and provides equal
access and cycle times for ease of use.
HighDensityPackage
• 72 lead SIMM, No. 176 (Angle)
• 72 lead SIMM, No. 356 (Straight)
• Common Data Inputs and Outputs
Single +5V (±10%) Supply Operation
Pins PD1-PD4,areusedtoidentifymodulememorydensity
inapplicationswherealternatemodulescanbeinterchanged.
Pin Configurations and Block Diagram
Pin Names
1
3
5
7
9
NC
NC
PD4
PD1
DQØ
DQ1 10
DQ2 12
DQ3 14
VCC 16
A7 18
A8 20
A9 22
DQ4 24
DQ5 26
DQ6 28
DQ7 30
2
4
6
8
PD3
VSS
PD2
DQ8
AØ-A19
EØ-E3
W
Address Inputs
Chip Enables
Write Enable
Output Enable
Common Data
Input/Output
Power(+5V±10%)
Ground
No Connection
11 DQ9
13 DQ10
15 DQ11
17 AØ
19 A1
21 A2
23 DQ12
25 DQ13
27 DQ14
29 DQ15
31 VSS
33 A15
35 E1
G
DQØ-DQ31
VCC
VSS
NC
W
32
AØ-A19
A14 34
EØ 36
20
W
G
37 E3
39 A17
41
43 DQ24
45 DQ25
47 DQ26
49 DQ27
51 A3
53 A4
55 A5
57 VCC
59 A6
61 DQ28
63 DQ29
65 DQ30
67 DQ31
69 A18
71 NC
E2 38
A16 40
G
VSS 42
DQ16 44
DQ17 46
DQ18 48
DQ19 50
A10 52
A11 54
A12 56
A13 58
DQ20 60
DQ21 62
DQ22 64
DQ23 66
VSS 68
A19 70
DQØ-DQ3
DQ4-DQ7
4
4
4
4
4
4
4
4
EØ
E1
E2
E3
DQ8-DQ11
DQ16-DQ19
DQ24-DQ27
DQ12-DQ15
DQ20-DQ23
DQ28-DQ31
NC 72
PD1 & PD3 = VSS
PD2 & PD4 = Open
ElectronicDesigns,Inc.
•OneResearchDrive•Westborough,MA01581USA•508-366-5151• FAX508-836-4850•
http://www.electronic-designs.com
1
EDI8F321024CA Rev. 0 7/98 ECO#10589