White Electronic Designs
512Kx8 MONOLITHIC SRAM
FEATURES
Access Times 70, 85, 100, 120ns
MIL-STD-883 Compliant Devices Available
Low Voltage Operation
Evolutionary, Corner Power/Ground Pinout JEDEC
Approved
• 32 pin Ceramic DIP (Package 300)
• 32 lead Ceramic SOJ (Package 101)
Commercial, Industrial and Military Temperature
Ranges
Low Power CMOS
Low Voltage Operation
• 3.3V ± 10% Power Supply
Low Power Data Retention
TTL Compatible Inputs and Outputs
A18
A16
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
I/O0
I/O1
I/O2
GND
WMS512K8V-XCX
ADVANCED*
EVOLUTIONARY PINOUT
32 DIP
32 CSOJ (DE)
TOP VIEW
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
VCC
A15
A17
WE#
A13
A8
A9
A11
OE#
A10
CS#
I/O7
I/O6
I/O5
I/O4
I/O3
* This product is under development, is not qualified or characterized and is subject to
change or cancellation without notice.
PIN DESCRIPTION
A0-18
I/O0-7
CS#
OE#
WE#
V
CC
GND
Address Inputs
Data Input/Output
Chip Select
Output Enable
Write Enable
+3.3V Power Supply
Ground
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
February, 2000
Rev. 2
1
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
White Electronic Designs
ABSOLUTE MAXIMUM RATINGS
Parameter
Operating Temperature
Storage Temperature
Signal Voltage Relative to GND
Junction Temperature
Supply Voltage
Symbol
T
A
T
STG
V
G
T
J
V
CC
Min
-55
-65
-0.5
-0.5
Max
+125
+150
V
CC
+0.5
150
7.0
Unit
°C
°C
V
°C
V
CS#
H
L
L
L
OE#
X
L
X
H
WE#
X
H
L
H
WMS512K8V-XCX
ADVANCED*
TRUTH TABLE
Mode
Standby
Read
Write
Out Disable
Data I/O
High Z
Data Out
Data In
High Z
Power
Standby
Active
Active
Active
RECOMMENDED OPERATING CONDITIONS
Parameter
Supply Voltage
Input High Voltage
Input Low Voltage
Operating Temp. (Mil.)
Symbol
V
CC
V
IH
V
IL
T
A
Min
3.0
2.2
-0.3
-55
Max
3.6
V
CC
+ 0.3
+0.8
+125
Unit
V
V
V
°C
Parameter
Input capacitance
Output capacitance
CAPACITANCE
T
A
= +25°C
Symbol Condition
V
IN
= 0V, f = 1.0MHz
C
IN
C
OUT
V
OUT
= 0V, f = 1.0MHz
Max
12
12
Unit
pF
pF
This parameter is guaranteed by design but not tested.
DC CHARACTERISTICS
V
CC
= 3.3V, GND = 0V, -55°C ≤ T
A
≤ +125°C
Parameter
Input Leakage Current
Output Leakage Current
Operating Supply Current
Standby Current
Output Low Voltage
Output High Voltage
Symbol
I
LI
I
LO
I
CC
I
SB
V
OL
V
OH
Conditions
V
CC
= 3.6, V
IN
= GND to V
CC
CS# = V
IH
, OE# = V
IH
, V
OUT
= GND to V
CC
CS# = V
IL
, OE# = V
IH
, f = 5MHz, V
CC
= 3.6
CS# = V
IH
, OE# = V
IH
, f = 5MHz, V
CC
= 3.6
I
OL
= 2.1mA, V
CC
= 3.0
I
OH
= -1.0mA, V
CC
= 3.0
Min
Max
10
10
25
400
0.4
Units
µA
µA
mA
µA
V
V
2.4
NOTE: DC test conditions: V
IH
= V
CC
-0.3V, V
IL
= 0.3V
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
February, 2000
Rev. 2
2
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
White Electronic Designs
AC CHARACTERISTICS
V
CC
= 3.3V, GND = 0V, -55°C ≤ T
A
≤ +125°C
Parameter
Read Cycle
Read Cycle Time
Address Access Time
Output Hold from Address Change
Chip Select Access Time
Output Enable to Output Valid
Chip Select to Output in Low Z
Output Enable to Output in Low Z
Chip Disable to Output in High Z
Output Disable to Output in High Z
1. This parameter is guaranteed by design but not tested.
WMS512K8V-XCX
ADVANCED*
Symbol
t
RC
t
AA
t
OH
t
ACS
t
OE
t
CLZ
1
t
OLZ
1
t
CHZ
1
t
OHZ
1
-70
Min
70
5
70
35
10
5
25
25
10
5
Max
70
5
Min
85
-85
Max
85
5
85
40
10
5
25
25
Min
100
-100
Max
100
5
100
50
10
5
35
35
Min
120
-120
Max
120
120
60
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
35
35
AC CHARACTERISTICS
V
CC
= 3.3V, GND = 0V, -55°C ≤ T
A
≤ +125°C
Parameter
Write Cycle
Write Cycle Time
Chip Select to End of Write
Address Valid to End of Write
Data Valid to End of Write
Write Pulse Width
Address Setup Time
Address Hold Time
Output Active from End of Write
Write Enable to Output in High Z
Data Hold from Write Time
1. This parameter is guaranteed by design but not tested.
Symbol
t
WC
t
CW
t
AW
t
DW
t
WP
t
AS
t
AH
t
OW
1
t
WHZ
1
t
DH
-70
Min
70
60
60
30
50
0
5
5
0
Max
Min
85
75
75
35
50
0
5
5
0
-85
Max
Min
100
80
80
40
60
0
5
5
0
-100
Max
Min
120
100
100
40
60
0
5
5
0
-120
Max
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
25
25
35
35
AC TEST CIRCUIT
I
OL
Current Source
AC TEST CONDITIONS
Parameter
Input Pulse Levels
Input Rise and Fall
Input and Output Reference Level
Output Timing Reference Level
Typ
V
IL
= 0, V
IH
= 3.0
5
1.5
1.5
Unit
V
ns
V
V
D.U.T.
C
eff
= 50 pf
V
Z
≈
1.5V
(Bipolar Supply
I
OH
Current Source
NOTES:
Vz is programmable from -2V to +7V.
I
OL
& I
OH
programmable from 0 to 16mA.
Tester Impedance Z0 = 75 Ω.
Vz 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.
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
February, 2000
Rev. 2
3
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
White Electronic Designs
TIMING WAVEFORM - READ CYCLE
WMS512K8V-XCX
ADVANCED*
t
RC
ADDRESS
t
RC
ADDRESS
t
AA
CS#
t
AA
t
OH
OE#
DATA I/O
PREVIOUS DATA VALID
DATA VALID
t
ACS
t
CLZ
t
CHZ
t
OE
t
OLZ
DATA I/O
HIGH IMPEDANCE
READ CYCLE 2 (WE# = V
IH
)
t
OHZ
DATA VALID
READ CYCLE 1 (CS# = OE# = V
IL
, WE# = V
IH
)
WRITE CYCLE - WE# CONTROLLED
t
WC
ADDRESS
t
AW
t
CW
CS#
t
AH
t
AS
WE#
t
WP
t
OW
t
WHZ
t
DW
t
DH
DATA I/O
DATA VALID
WRITE CYCLE 1, WE# CONTROLLED
WRITE CYCLE - CS# CONTROLLED
t
WC
ADDRESS
t
AW
t
AS
CS#
t
CW
t
AH
t
WP
WE#
t
DW
t
DH
DATA I/O
DATA VALID
WRITE CYCLE 2, CS# CONTROLLED
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
February, 2000
Rev. 2
4
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
White Electronic Designs
PACKAGE 101: 32 LEAD, CERAMIC SOJ
WMS512K8V-XCX
ADVANCED*
21.1 (0.830) ± 0.25 (0.010)
0.2 (0.008)
± 0.05 (0.002)
3.96 (0.156) MAX
0.89 (0.035)
Radius TYP
11.3 (0.446)
± 0.2 (0.009)
9.55 (0.376) ± 0.25 (0.010)
1.27 (0.050) ± 0.25 (0.010)
PIN 1 IDENTIFIER
1.27 (0.050) TYP
19.1 (0.750) TYP
ALL LINEAR DIMENSIONS ARE MILLIMETERS AND PARENTHETICALLY IN INCHES
PACKAGE 300: 32 PIN, CERAMIC DIP, SINGLE CAVITY SIDE BRAZED
42.8 (1.686) MAX
5.13 (0.202) MAX
PIN 1 IDENTIFIER
3.2 (0.125) MIN
0.99 (0.039)
±
0.51 (0.020)
2.5 (0.100)
TYP
1.27 (0.050)
±
0.1 (0.005)
0.46 (0.018)
±
0.05 (0.002)
0.25 (0.010)
±
0.05 (0.002)
15.25 (0.600)
±
0.25 (0.010)
ALL LINEAR DIMENSIONS ARE MILLIMETERS AND PARENTHETICALLY IN INCHES
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
February, 2000
Rev. 2
5
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
