White Electronic Designs
1Mx32 SRAM 3.3V MODULE
FEATURES
Access Times of 17, 20, 25ns
84 lead, 28mm CQFP, (Package 511)
Organized as two banks of 512Kx32, User
Configurable as 2Mx16 or 4Mx8
Commercial, Industrial and Military Temperature
Ranges
TTL Compatible Inputs and Outputs
3.3V Power Supply
Low Power CMOS
WS1M32V-XG3X
PRELIMINARY*
Built-in Decoupling Caps and Multiple Ground Pins
for Low Noise Operation
Weight - WS1M32V-XG3X - 20 grams typical
*This product is under development, is not qualified or characterized and is subject to
change without notice.
PIN CONFIGURATION FOR WS1M32V-XG3X
TOP VIEW
GND
I/O
31
I/O
30
I/O
29
I/O
28
I/O
27
I/O
26
I/O
25
I/O
24
NC
NC
NC
I/O
23
I/O
22
I/O
21
I/O
20
I/O
19
I/O
18
I/O
17
I/O
16
V
CC
PIN DESCRIPTION
I/O0-31
A0-18
WE#1-4
CS#1-2
OE#1-4
V
CC
GND
NC
Data Inputs/Outputs
Address Inputs
Write Enables
Chip Selects
Output Enables
+3.3V Power Supply
Ground
Not Connected
11
10
9
8 7 6 5 4 3 2 1 84 83 82 81 80 79 78 77 76 75
V
CC
A
0
A
1
A
2
A
3
A
4
A
5
A
6
OE#
1
OE#
2
OE#
3
OE#
4
NC
A
7
A
8
A
9
A
10
A
11
A
12
A
13
GND
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34 35 36
37
38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
GND
NC
NC
NC
NC
NC
NC
NC
NC
WE#
4
WE#
3
WE#
2
WE#
1
NC
NC
A
18
A
17
A
16
A
15
A
14
V
CC
BLOCK DIAGRAM
OE#1 WE#1
OE#2 WE#2
OE#3 WE#3
OE#4 WE#4
CS#1
A0-18
2M
8
512K x
x 8
512K x 8
2M
8
512K x
x 8
512K x 8
2M
8
512K x
x 8
2M
512K
x 8
512K x 8
512K x 8
V
CC
I/O
0
I/O
1
I/O
2
I/O
3
I/O
4
I/O
5
I/O
6
I/O
7
CS#
1
NC
CS#
2
I/O
8
I/O
9
I/O
10
I/O
11
I/O
12
I/O
13
I/O
14
I/O
15
GND
8
CS#2
I/O0-7
8
8
8
I/O8-15
I/O16-23
I/O24-31
Note: CS#1& CS#2 are used as bank select
The WEDC 84 lead G3 CQFP fills the same fit and function as the JEDEC 84 lead
CQFJ or 84 PLCC. But the G3 has the TCE and lead inspection advantage of the
CQFP form.
1.146"
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
February, 2001
Rev. 5
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
-0.5
Min
-55
-65
-0.5
Max
125
+150
4.6
150
4.6
Unit
°C
°C
V
°C
V
CS#
H
L
L
L
OE#
X
L
X
H
WE#
X
H
L
H
WS1M32V-XG3X
PRELIMINARY
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
Symbol
V
CC
V
IH
V
IL
Min
3.0
2.2
-0.3
Max
3.6
V
CC
+ 0.3
+0.8
Unit
V
V
V
Parameter
OE#1-4 capacitance
WE#1-4 capacitance
CS#1-2 capacitance
Data I/O capacitance
Address input
capacitance
CAPACITANCE
T
A
= +25°C
Symbol Conditions
COE
CWE
CCS
CI/O
CAD
V
IN
= 0V, f = 1.0MHz
V
IN
= 0V, f = 1.0MHz
V
IN
= 0V, f = 1.0MHz
VI/O = 0V, f = 1.0MHz
V
IN
= 0V, f = 1.0MHz
Max
20
20
50
20
70
Unit
pF
pF
pF
pF
pF
This parameter is guaranteed by design, but not tested.
DC CHARACTERISTICS
V
CC
= 3.3V ± 0.3V, -55°C ≤ T
A
≤ +125°C
Parameter
Input Leakage Current
Output Leakage Current
Operating Supply Current (x 32 Mode)
Standby Current
Output Low Voltage
Output High Voltage
NOTE: DC test conditions: V
IH
= V
CC
-0.3V, V
IL
= 0.3V
Contact Factory for low power option.
Symbol
I
LI
I
LO
I
CC
x 32
ISB
V
OL
V
OH
Conditions
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
= 3.6V
CS# = V
IH
, OE# = V
IH
, f = 5MHz, V
CC
= 3.6V
I
OL
= 4.0mA
I
OH
= -4.0mA
2.4
Min
Max
10
10
520
400
0.4
Units
µA
µA
mA
mA
V
V
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
February, 2001
Rev. 5
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.
Symbol
t
RC
t
AA
t
OH
t
ACS
t
OE
t
CLZ
1
t
OLZ
1
1
1
WS1M32V-XG3X
PRELIMINARY
-17
Min
17
17
0
17
10
1
0
12
12
1
0
0
Max
Min
20
-20
Max
20
0
20
10
1
0
12
12
Min
25
-25
Max
25
25
12
Units
ns
ns
ns
ns
ns
ns
ns
t
CHZ
12
12
ns
ns
t
OHZ
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 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
-17
Min
17
15
15
11
15
2
0
2
9
0
0
Max
Min
20
15
15
12
15
2
0
3
-20
Max
Min
25
17
17
13
17
2
0
4
11
0
-25
Max
Units
ns
ns
ns
ns
ns
ns
ns
ns
t
WHZ
1
t
DH
13
ns
ns
AC TEST CIRCUIT
AC TEST CONDITIONS
Parameter
Input Pulse Levels
Input Rise and Fall
Input and Output Reference Level
Output Timing Reference Level
V
Z
1.5V
(Bipolar Supply)
I
OL
Current Source
Typ
V
IL
= 0, V
IH
= 2.5
5
1.5
1.5
Unit
V
ns
V
V
D.U.T.
C
eff
= 50 pf
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.
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, 2001
Rev. 5
3
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
White Electronic Designs
TIMING WAVEFORM - READ CYCLE
WS1M32V-XG3X
PRELIMINARY
t
RC
ADDRESS
t
AA
t
RC
ADDRESS
t
AA
CS#
t
ACS
t
CLZ
t
CHZ
t
OH
OE#
DATA I/O
PREVIOUS DATA VALID
DATA VALID
DATA I/O
t
OE
t
OLZ
t
OHZ
DATA VALID
READ CYCLE 1 (CS# = OE# = V
IL
, WE# = V
IH
)
HIGH IMPEDANCE
READ CYCLE 2 (WE# = V
IH
)
WRITE CYCLE - WE# CONTROLLED
t
WC
ADDRESS
t
AW
t
CW
CS#
t
AS
WE#
t
WHZ
DATA I/O
t
DW
DATA VALID
t
WP
t
OW
t
DH
t
AH
WRITE CYCLE 1, WE# CONTROLLED
WRITE CYCLE - CS# CONTROLLED
t
WC
ADDRESS
t
AW
t
AS
CS#
t
WP
WE#
t
DW
DATA I/O
DATA VALID
WRITE CYCLE 2, CS# CONTROLLED
t
DH
t
CW
t
AH
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
February, 2001
Rev. 5
4
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
White Electronic Designs
WS1M32V-XG3X
PRELIMINARY
PACKAGE 511: 84 LEAD, CERAMIC QUAD FLAT PACK (G3)
30.23 (1.190) ± 0.25 (0.010) SQ
27.18 (1.070) ± 0.25 (0.010) SQ
4.29 (0.169) ±
0.28 (0.011)
4.12 (0.162) ± 0.20 (0.008)
0.25 (0.010) ±
0.03 (0.002)
R 0.127
(0.005) MIN
29.11 (1.146) ±
0.25 (0.010)
1/7
0.19 (0.008) ±
0.06 (0.003)
1.02 (0.040) ±
0.12 (0.005)
DETAIL A
1.27 (0.050)
TYP
0.38 (0.015) ±
0.05 (0.002)
25.40 (1.000) TYP
SEE DETAIL “A”
0.27 (0.011) ±
0.04 (0.001)
The WEDC 84 lead G3 CQFP fills the same fit and
function as the JEDEC 84 lead CQFJ or 84 PLCC. But
the G3 has the TCE and lead inspection advantage of
the CQFP form.
1.146"
ALL LINEAR DIMENSIONS ARE MILLIMETERS AND PARENTHETICALLY IN INCHES
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
February, 2001
Rev. 5
5
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
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