EDI8F81026C
July 2004
Rev. 0
1
White Electronic Designs Corporation (602) 437-1520 www.wedc.com
White Electronic Designs
The EDI8F81026C is an 8Mb CMOS Static RAM based
on two 512Kx8 Static RAMs mounted on a multi-layered
epoxy laminate (FR4) substrate.
The EDI8F81026C is packaged in a 36 pin DIP and features
the JEDEC approved, revolutionary pinout.
All inputs and outputs are TTL compatible and operate from
a single 5V supply.
Fully asynchronous, the EDI8F81026C requires no clocks
or refreshing for operation.
FEATURES
1Mx8 bit CMOS Static RAM
Access Times 20 through 35ns
TTL Compatible Inputs and Outputs
Fully Static, No Clocks
High Density Packaging
JEDEC Aproved, Revolutionary Pinout
36 Pin DIP, No. 179
Single +5V (10%) Supply Operation
Pin Confi guration
DESCRIPTION
1Mx8 STATIC RAM CMOS, MODULE
Pin Description
A0
A1
A2
A3
A4
E#
DQ0
DQ1
V
CC
V
SS
DQ2
DQ3
W#
A5
A6
A7
A8
A9
NC
A19
A18
A17
A16
G#
DQ7
DQ6
V
SS
V
CC
DQ5
DQ4
A15
A14
A13
A12
A11
A10
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
A0-A18
W#
A19
E#
DQ0-DQ7
DECODER
G#
512k
x 8
512k
x 8
A0-A19
Address Inputs
E#
Chip Enable
W#
Write Enable
G#
Output Enable
DQ0-DQ7
Common Data Input/Output
V
CC
Power (+5V10%)
V
SS
Ground
NC
No Connection
Block Diagram
EDI8F81026C
July 2004
Rev. 0
2
White Electronic Designs Corporation (602) 437-1520 www.wedc.com
White Electronic Designs
ABSOLUTE MAXIMUM RATINGS*
Voltage on any pin relative to V
SS
-0.5V to 7.0V
Operating Temperature T
A
(Ambient)
Commercial
0C to +70C
Industrial
-40C to +85C
Storage Temperature
-55C to +125C
Power Dissipation
2.0 Watt
Output Current
20 mA
* Stress greater than those listed under "Absolute Maximum Ratings" may cause
permanent damage to the device. This is a stress rating only and functional
operation of the device at these or any other conditions greater than those indicated
in the operational sections of this specifi cation is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect reliability.
RECOMMENDED DC OPERATING CONDITIONS
Parameter
Sym
Min
Typ
Max
Units
Supply Voltage
V
CC
4.5
5.0
5.5
V
Supply Voltage
V
SS
0
0
0
V
Input High Voltage
V
IH
2.2
--
6.0
V
Input Low Voltage
V
IL
-0.3
--
0.8
V
DC ELECTRICAL CHARACTERISTICS
Parameter
Sym
Conditions
Min
Typ*
Max
Units
Operating Power Supply Current
I
CC1
W#, E# = V
IL
, I
I/O
= 0mA, Min Cycle
--
212
120
mA
Standby (TTL) Power Supply Current
I
CC2
E > V
IH
, V
IN
< V
IL,
V
IN
> V
IH
--
35
50
mA
Full Standby Power Supply Current (CMOS)
I
CC3
E > V
CC
-0.2V, V
IN
> V
CC
-0.2V or V
IN
< 0.2V
--
20
12
mA
Input Leakage Current
I
LI
V
IN
= 0V to V
CC
--
--
10
A
Output Leakage Current
I
LO
V I/O = 0V to V
CC
--
--
10
A
Output High Voltage
V
OH
I
OH
=-4.0mA
2.4
--
--
V
Output Low Voltage
V
OL
I
OL
= 8.0mA
--
--
0.4
V
*Typical: T
A
= 25C, V
CC
= 5.0V
CAPACITANCE
(f=1.0MHz, V
IN
=V
CC
or V
SS
)
Parameter
Sym
Max
Unit
Address Lines
CI
12
pF
Data Lines
CD/Q
43
pF
Chip Enable Line
CC
10
pF
Write and Output Enable Lines
CW
32
pF
These parameters are sampled, not 100% tested.
TRUTH TABLE
G#
E#
W#
Mode
Output
Power
X
H
X
Standby
High Z
I
CC
2, I
CC
3
H
L
H
Output Deselect
High Z
I
CC
1
L
L
H
Read
D
OUT
I
CC
1
X
L
L
Write
D
IN
I
CC
1
AC TEST CONDITIONS
Input Pulse Levels
V
SS
to 3.0V
Input Rise and Fall Times
5ns
Input and Output Timing Levels
1.5V
Output Load
1TTL, CL =35pF
(Note: For t
EHQZ
, t
GHQZ
and t
WLQZ
, CL=5pF)
EDI8F81026C
July 2004
Rev. 0
3
White Electronic Designs Corporation (602) 437-1520 www.wedc.com
White Electronic Designs
AC CHARACTERISTICS READ CYCLE
Parameter
Symbol
20ns
25ns
35ns
Units
JEDEC
Alt.
Min
Max
Min
Max
Min
Max
Read Cycle Time
t
AVAV
t
RC
20
25
35
ns
Address Access Time
t
AVQV
t
AA
20
25
35
ns
Chip Enable Access Time
t
ELQV
t
ACS
20
25
35
ns
Chip Enable to Output in Low Z (1)
t
ELQX
t
CLZ
3
3
3
ns
Chip Disable to Output in High Z (1)
t
EHQZ
t
CHZ
10
12
15
ns
Output Hold from Address Change
t
AVQX
t
OH
3
3
3
ns
Output Enable to Output Valid
t
GLQV
t
OE
8
10
12
ns
Output Enable to Output in Low Z (1)
t
GLQX
t
LOZ
3
3
3
ns
Output Disable to Output in High Z(1)
t
GHQZ
t
OHZ
8
10
12
ns
Note 1: Parameter guaranteed, but not tested
FIGURE 3 READ CYCLE 2 - W# HIGH
FIGURE 2 READ CYCLE 1 - W# HIGH, G#, E# LOW
ADDRESS 1
ADDRESS 2
t
AVAV
DATA 1
DATA 2
t
AVQV
t
AVQX
A
Q
E#
G#
Q
A
t
AVAV
t
AVQV
t
ELQV
t
GLQV
t
GLQX
t
EHQZ
t
GHQZ
t
ELQX
EDI8F81026C
July 2004
Rev. 0
4
White Electronic Designs Corporation (602) 437-1520 www.wedc.com
White Electronic Designs
AC CHARACTERISTICS WRITE CYCLE
Parameter
Symbol
20ns
25ns
35ns
Units
JEDEC
Alt.
Min
Max
Min
Max
Min
Max
Write Cycle Time
t
AVAV
t
WC
20
25
35
ns
Chip Enable to End of Write
t
ELWH
t
ELEH
t
CW
t
CW
15
15
20
20
30
30
ns
ns
Address Setup Time
t
AVWL
t
AVEL
t
AS
t
AS
0
0
0
0
0
0
ns
ns
Address Valid to End of Write
t
AVWH
t
AVEH
t
AW
t
AW
15
15
15
15
20
20
ns
ns
Write Pulse Width
t
WLWH
t
WLEH
t
WP
t
WP
15
15
20
20
25
25
ns
ns
Write Recovery Time
t
WHAX
t
EHAX
t
WR
t
WR
0
0
0
0
0
0
ns
ns
Data Hold Time
t
WHDX
t
EHDX
t
DH
t
DH
0
0
0
0
0
0
ns
ns
Write to Output in High Z (1)
t
WLQZ
t
WHZ
0
8
0
12
0
15
ns
Data to Write Time
t
DVWH
t
DVEH
t
DW
t
DW
12
12
15
15
20
20
ns
ns
Output Active from End of Write (1)
t
WHQX
t
WLZ
3
3
3
ns
Note 1: Parameter guaranteed, but not tested.
FIGURE 4 WRITE CYCLE 1 - W# CONTROLLED
E#
W#
Q
A
t
AVAV
t
AVWH
t
ELWH
t
WLQZ
t
WHQX
t
DVWH
t
WHDX
t
WHAX
t
WLWH
t
AVWL
D
HIGH Z
DATA VALID
EDI8F81026C
July 2004
Rev. 0
5
White Electronic Designs Corporation (602) 437-1520 www.wedc.com
White Electronic Designs
FIGURE 5 WRITE CYCLE 2 E# CONTROLLED
E#
W#
Q
A
t
AVAV
D
HIGH Z
DATA VALID
t
AVEL
t
ELEH
t
AVEH
t
EHAX
t
WLEH
t
EHDX
t
DVEH
Package No. 179: 36 Pin Dual-in-line Package
PACKAGE DESCRIPTION
55.50
(2.185) MAX.
3.81
(0.150)
REF.
2.54 (0.100) TYP.
17 X 2.54 (0.100)
43.18 (1.700) REF.
15.88
(0.625)
MAX.
7.34
(0.290)
MAX.
4.45 (0.175)
3.18 (0.125)
15.75 (0.620)
14.99 (0.590)
P1
ORDERING INFORMATION
Note: To order an Industrial grade product substitute the letter C in the Suffi x with the letter I,
eg. EDI8F81026C20M6C becomes EDI8F81026C20M6I.
Standard Power
Speed (ns)
Package No.
Height*
EDI8F81026C20M6C
20
179
7.37 (0.290")
EDI8F81026C85M6C
25
179
7.37 (0.290")
EDI8F81026C35M6C
35
179
7.37 (0.290")
* ALL DIMENSIONS ARE IN MILLIMETERS AND (INCHES).
EDI8F81026C
July 2004
Rev. 0
6
White Electronic Designs Corporation (602) 437-1520 www.wedc.com
White Electronic Designs
Document Title
1M X 8 SRAM Module
Revision History
Rev #
History
Release Date
Status
Rev 0
0.1 Updated datasheet format
0.2 Added package height
0.3 Added metric measurements
0.4 Added new document title page
7-2004
Final
PDF 
ZIP