1
White Electronic Designs Corporation Phoenix, AZ (602) 437-1520
WMS128K8V-XXX
s MIL-STD-883 Compliant Devices Available
s Commercial, Industrial and Military Temperature Range
s 3.3 Volt Power Supply
s Low Power CMOS
s TTL Compatible Inputs and Outputs
*
This data sheet describes a product under development, not fully
characterized, and is subject to change without notice.
** Package under developement.
128Kx8 3.3V MONOLITHIC SRAM
PRELIMINARY*
EVOLUTIONARY PINOUT
A
0-16
Address Inputs
I/O
0-7
Data Input/Outputs
CS
Chip Select
OE
Output Enable
WE
Write Enable
V
CC
+3.3V Power
V
SS
Ground
NC
Not Connected
PIN DESCRIPTION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
A0
A1
A2
A3
CS
I/O1
I/O2
V
CC
V
SS
I/O3
I/O4
WE
A4
A5
A6
A7
A16
A15
A14
A13
OE
I/O8
I/O7
V
SS
V
CC
I/O6
I/O5
A12
A11
A10
A9
A8
TOP VIEW
TOP VIEW
32 CSOJ (DR)
32 FLATPACK (FR)**
June 2000 Rev. 3
FEATURES
s Access Times 15, 17, 20, 25, 35ns
s Revolutionary, Center Power/Ground Pinout
JEDEC Approved
32 lead Ceramic SOJ (Package 101)
32 lead Ceramic Flat Pack (Package 220)**
s Evolutionary, Corner Power/Ground Pinout
JEDEC Approved
32 pin Ceramic DIP (Package 300)
s 32 pin, Rectangular Ceramic Leadless Chip Carrier
(Package 601)
32 DIP (C)
REVOLUTIONARY PINOUT
TOP VIEW
32 CLCC
2
White Electronic Designs Corporation Phoenix, AZ (602) 437-1520
WMS128K8V-XXX
TRUTH TABLE
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
Min
Max
Unit
Operating Temperature
T
A
-55
+125
C
Storage Temperature
T
STG
-65
+150
C
Signal Voltage Relative to GND
V
G
-0.5
Vcc+0.5
V
Junction Temperature
T
J
150
C
Supply Voltage
V
CC
-0.5
5.5
V
CS
OE
WE
Mode
Data I/O
Power
H
X
X
Standby
High Z
Standby
L
L
H
Read
Data Out
Active
L
X
L
Write
Data In
Active
L
H
H
Out Disable
High Z
Active
RECOMMENDED OPERATING CONDITIONS
Parameter
Symbol
Condition
Max
Unit
Input capacitance
C
IN
V
IN
= 0V, f = 1.0MHz
20
pF
Output capacitance
C
OUT
V
OUT
= 0V, f = 1.0MHz
20
pF
This parameter is guaranteed by design but not tested.
Parameter
Symbol
Min
Max
Unit
Supply Voltage
V
CC
3.0
3.6
V
Input High Voltage
V
IH
2.2
V
CC
+ 0.3
V
Input Low Voltage
V
IL
-0.3
+0.8
V
Operating Temp. (Mil.)
T
A
-55
+125
C
CAPACITANCE
(T
A
= +25
C)
I
Current Source
D.U.T.
C = 50 pf
eff
I
OL
V
1.5V
(Bipolar Supply)
Z
Current Source
OH
NOTES:
V
Z
is programmable from -2V to +7V.
I
OL
& I
OH
programmable from 0 to 16mA.
Tester Impedance Z
0
= 75
.
V
Z
is typically the midpoint of V
OH
and V
OL
.
I
OL
& I
OH
are adjusted to simulate a typical resistive load circuit.
ATE tester includes jig capacitance.
AC TEST CIRCUIT
AC TEST CONDITIONS
Parameter
Typ
Unit
Input Pulse Levels
V
IL
= 0, V
IH
= 2.5
V
Input Rise and Fall
5
ns
Input and Output Reference Level
1.5
V
Output Timing Reference Level
1.5
V
DC CHARACTERISTICS
(V
CC
= 3.3V
0.3V, V
SS
= 0V, T
A
= -55
C to +125
C)
Parameter
Sym
Conditions
Units
Min
Max
Input Leakage Current
I
LI
V
CC
= 3.3, V
IN
= GND to V
CC
10
A
Output Leakage Current
I
LO
CS = V
IH
, OE = V
IH
, V
OUT
= GND to V
CC
10
A
Operating Supply Current (x 32 Mode)
I
CC
CS = V
IL
, OE = V
IH
, f = 5MHz, V
CC
= 3.3
120
mA
Standby Current
I
SB
CS = V
IH
, OE = V
IH
, f = 5MHz, V
CC
= 3.3
8
mA
Output Low Voltage
V
OL
I
OL
= 8mA
0.4
V
Output High Voltage
V
OH
I
OH
= -4.0mA
2.4
V
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White Electronic Designs Corporation Phoenix, AZ (602) 437-1520
WMS128K8V-XXX
AC CHARACTERISTICS
(V
CC
= 3.3V, T
A
= -55
C to +125
C)
Parameter
Symbol
-15
-17
-20
-25
-35
Units
Read Cycle
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Read Cycle Time
t
RC
15
17
20
25
35
ns
Address Access Time
t
AA
15
17
20
25
35
ns
Output Hold from Address Change
t
OH
0
0
0
0
0
ns
Chip Select Access Time
t
ACS
15
17
20
25
35
ns
Output Enable to Output Valid
t
OE
10
11
12
15
20
ns
Chip Select to Output in Low Z
t
CLZ
1
5
5
5
5
5
ns
Output Enable to Output in Low Z
t
OLZ
1
5
5
5
5
5
ns
Chip Disable to Output in High Z
t
CHZ
1
8
9
10
12
15
ns
Output Disable to Output in High Z
t
OHZ
1
8
9
10
12
15
ns
1. This parameter is guaranteed by design but not tested.
AC CHARACTERISTICS
(V
CC
= 3.3V, T
A
= -55
C to +125
C)
Parameter
Symbol
-15
-17
-20
-25
-35
Units
Write Cycle
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Write Cycle Time
t
WC
15
17
20
25
35
ns
Chip Select to End of Write
t
CW
13
14
15
20
30
ns
Address Valid to End of Write
t
AW
13
14
15
20
30
ns
Data Valid to End of Write
t
DW
10
11
12
15
18
ns
Write Pulse Width
t
WP
13
14
15
20
30
ns
Address Setup Time
t
AS
0
0
0
0
0
ns
Address Hold Time
t
AH
0
0
0
0
0
ns
Output Active from End of Write
t
OW
1
5
5
5
5
5
ns
Write Enable to Output in High Z
t
WHZ
1
8
9
10
10
15
ns
Data Hold Time
t
DH
0
0
0
0
0
ns
1. This parameter is guaranteed by design but not tested.
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White Electronic Designs Corporation Phoenix, AZ (602) 437-1520
WMS128K8V-XXX
WS32K32-XHX
TIMING WAVEFORM - READ CYCLE
WRITE CYCLE - CS CONTROLLED
WRITE CYCLE - WE CONTROLLED
ADDRESS
DATA I/O
WRITE CYCLE 1, WE CONTROLLED
t
AW
t
CW
t
AH
t
WP
t
DW
t
WHZ
t
AS
t
OW
t
DH
t
WC
DATA VALID
CS
WE
ADDRESS
DATA I/O
READ CYCLE 2 (WE = V
IH
)
t
AA
t
ACS
t
OE
t
CLZ
t
OLZ
t
OHZ
t
RC
DATA VALID
HIGH IMPEDANCE
CS
OE
t
CHZ
ADDRESS
DATA I/O
READ CYCLE 1 (CS = OE = V
IL
, WE = V
IH
)
t
AA
t
OH
t
RC
DATA VALID
PREVIOUS DATA VALID
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White Electronic Designs Corporation Phoenix, AZ (602) 437-1520
WMS128K8V-XXX
ALL LINEAR DIMENSIONS ARE MILLIMETERS AND PARENTHETICALLY IN INCHES
PACKAGE 101:
32 LEAD, CERAMIC SOJ
PACKAGE 220:
32 LEAD, CERAMIC FLAT PACK
ALL LINEAR DIMENSIONS ARE MILLIMETERS AND PARENTHETICALLY IN INCHES
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