WS256K32-20HCA [WEDC]
SRAM,;型号: | WS256K32-20HCA |
厂家: | WHITE ELECTRONIC DESIGNS CORPORATION |
描述: | SRAM, 静态存储器 |
文件: | 总7页 (文件大小:148K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
WS256K32-XXX
HI-RELIABILITY PRODUCT
256Kx32 SRAM MODULE PRELIMINARY*
FEATURES
■ Access Times 20, 25, 35ns
■ MIL-STD-883 Compliant Devices Available
■ Packaging
■ 2V Data Retention devices available
(WS256K32L-XXX low power version only)
■ Commercial, Industrial and Military Temperature Range
■ 5 Volt Power Supply
• 66 pin, PGA Type, 1.185 inch square, Hermetic
Ceramic HIP (Package 401)
■ Low Power CMOS
• 68 lead, 40mm, Hermetic CQFP (Package 501)
■ Organized as 256Kx32, User Configurable as 512Kx16
■ Upgradable to 512Kx32 for future expansion
■ Data I/O Compatible with 3.3V devices
■ TTL Compatible Inputs and Outputs
■ Weight
WS256K32N-XHX - 13 grams typical
WS256K32-XG4X - 20 grams typical
*
This data sheet describes a product under development, not fully
characterized, and is subject to change without notice.
FIG. 1 PIN CONFIGURATION FOR WS256K32N-XHX
PIN DESCRIPTION
TOP VIEW
1
12
23
34
45
56
I/O0-31 Data Inputs/Outputs
A0-17
WE1-2
CS1-2
OE
Address Inputs
Write Enables
Chip Selects
Output Enable
Power Supply
Ground
I/O
I/O
8
9
NC
I/O15
I/O14
I/O13
I/O12
OE
I/O24
I/O25
I/O26
V
CC
I/O31
I/O30
I/O29
I/O28
NC
NC
NC
I/O10
GND
I/O11
A13
A14
A15
A16
A17
A
6
7
I/O27
VCC
BLOCK DIAGRAM
GND
NC
A10
A11
A12
VCC
A
A
3
4
5
2
2
A0
A1
A2
WE1CS1
WE2CS2
Not Connected
NC
NC
A
OE
A0-17
WE1
A
8
9
A
256K x 16
256K x 16
I/O
I/O
I/O
I/O
7
A
WE
CS
I/O23
I/O22
I/O21
I/O20
I/O
I/O
I/O
0
1
2
CS
NC
I/O
1
6
I/O16
I/O17
I/O18
16
16
5
4
GND
I/O19
3
I/O16-31
I/O0-15
11
22
33
44
55
66
October 2000 Rev. 2
1
White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com
WS256K32-XXX
FIG. 2 PIN CONFIGURATION FOR WS256K32-XG4X
TOP VIEW
PIN DESCRIPTION
I/O0-31 Data Inputs/Outputs
A0-17
WE
Address Inputs
Write Enable
Chip Selects
Output Enable
Power Supply
Ground
9
8 7 6 5 4 3 2 1 68 67 66 65 64 63 62 61
CS1-2
OE
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
I/O16
I/O17
I/O18
I/O19
I/O20
I/O21
I/O22
I/O23
GND
I/O24
I/O25
I/O26
I/O27
I/O28
I/O29
I/O30
I/O31
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
0
1
2
3
4
5
6
7
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
VCC
BLOCK DIAGRAM
GND
NC
CS2
CS1
Not Connected
WE
OE
GND
I/O
I/O
8
9
A
0-17
I/O10
I/O11
I/O12
I/O13
I/O14
I/O15
256K x 16
256K x 16
27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43
16
16
I/O16-31
I/O0-15
White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com
2
WS256K32-XXX
ABSOLUTE MAXIMUM RATINGS
TRUTH TABLE
Parameter
Symbol
TA
Min
-55
-65
-0.5
Max
+125
+150
Vcc+0.5
150
Unit
°C
°C
V
CS
H
L
L
L
OE
X
L
H
X
WE
X
H
H
L
Mode
Standby
Read
Out Disable
Write
Data I/O
High Z
Data Out
High Z
Power
Standby
Active
Active
Active
Operating Temperature
Storage Temperature
Signal Voltage Relative to GND
Junction Temperature
Supply Voltage
TSTG
VG
Data In
TJ
°C
V
VCC
-0.5
7.0
CAPACITANCE
(TA = +25°C)
RECOMMENDED OPERATING CONDITIONS
Parameter
Symbol
VCC
Min
4.5
Max
5.5
Unit
V
Parameter
Symbol
COE
Conditions
Max Unit
Supply Voltage
OE capacitance
V
V
IN = 0 V, f = 1.0 MHz
IN = 0 V, f = 1.0 MHz
28
pF
pF
Input High Voltage
Input Low Voltage
Operating Temp (Mil)
VIH
2.2
VCC + 0.3
+0.8
V
WE1-2 capacitance
HIP (PGA)
CQFP G4
CS1-2 capacitance
CWE
20
28
20
VIL
-0.5
-55
V
TA
+125
°C
CCS
CI/O
CAD
V
IN = 0 V, f = 1.0 MHz
I/O = 0 V, f = 1.0 MHz
VIN = 0 V, f = 1.0 MHz
pF
pF
pF
Data I/O capacitance
V
20
28
Address input capacitance
This parameter is guaranteed by design but not tested.
DC CHARACTERISTICS
(VCC = 5.0V, GND = 0V, TA = -55°C to +125°C)
Parameter
Symbol
Conditions
Units
Min
Max
Input Leakage Current
Output Leakage Current
ILI
ILO
VCC = 5.5, VIN = GND to VCC
10
µA
µA
mA
mA
V
CS = VIH, OE = VIH, VOUT = GND to VCC
CS = VIL, OE = VIH, f = 5MHz, Vcc = 5.5
CS = VIH, OE = VIH, f = 5MHz, Vcc = 5.5
IOL = 8mA, Vcc = 4.5
10
550
34
Operating Supply Current x 32 Mode
Standby Current
ICC x 32
ISB
Output Low Voltage
VOL
0.4
Output High Voltage
VOH
IOH = -4.0mA, Vcc = 4.5
2.4
V
NOTE: DC test conditions: VIH = VCC -0.3V, VIL = 0.3V
LOW POWER DATA RETENTION CHARACTERISTICS
(WS256K32L-XXX ONLY)
(TA = -55°C to +125°C)
Parameter
Symbol
Conditions
Units
Min
Typ
Max
Data Retention Supply Voltage
Data Retention Current
VDR
CS ≥ VCC -0.2V
2.0
5.5
16
V
ICCDR3
VCC = 3V
1.0
mA
3
White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com
WS256K32-XXX
AC CHARACTERISTICS
(VCC = 5.0V, GND = 0V, TA = -55°C to +125°C)
Parameter
Symbol
-20
-25
-35
Units
Read Cycle
Min
Max
Min
Max
Min
Max
Read Cycle Time
tRC
tAA
20
25
35
ns
ns
ns
ns
ns
ns
ns
ns
ns
Address Access Time
20
25
35
Output Hold from Address Change
Chip Select Access Time
tOH
0
0
0
tACS
tOE
20
12
25
15
35
20
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
tCLZ1
tOLZ1
tCHZ1
tOHZ1
5
0
5
0
5
0
12
12
15
15
20
20
1. This parameter is guaranteed by design but not tested.
AC CHARACTERISTICS
(VCC = 5.0V, GND = 0V, TA = -55°C to +125°C)
Parameter
Symbol
-20
-25
-35
Units
Write Cycle
Min
20
17
17
12
17
0
Max
Min
25
20
20
15
20
0
Max
Min
35
25
25
20
25
0
Max
Write Cycle Time
tWC
tCW
tAW
tDW
tWP
tAS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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
tAH
2
2
2
Output Active from End of Write
Write Enable to Output in High Z
Data Hold Time
tOW1
tWHZ1
tDH
0
0
0
8
10
15
0
0
0
1. This parameter is guaranteed by design but not tested.
FIG. 3
AC TEST CONDITIONS
AC TEST CIRCUIT
IOL
Parameter
Typ
Unit
Current Source
Input Pulse Levels
VIL = 0, VIH = 3.0
V
ns
V
Input Rise and Fall
5
Input and Output Reference Level
Output Timing Reference Level
1.5
1.5
D.U.T.
VZ ≈ 1.5V
(Bipolar Supply)
V
Ceff = 50 pf
NOTES:
VZ is programmable from -2V to +7V.
IOL & IOH programmable from 0 to 16mA.
Tester Impedance Z0 = 75 Ω.
VZ is typically the midpoint of VOH and VOL.
IOL & IOH are adjusted to simulate a typical resistive load circuit.
ATE tester includes jig capacitance.
IOH
Current Source
White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com
4
WS256K32-XXX
FIG. 4
TIMING WAVEFORM - READ CYCLE
tRC
ADDRESS
CS
tAA
tRC
tCHZ
tACS
tCLZ
ADDRESS
tAA
OE
tOE
tOLZ
tOH
tOHZ
DATA I/O
DATA I/O
PREVIOUS DATA VALID
DATA VALID
DATA VALID
HIGH IMPEDANCE
READ CYCLE 1 (CS = OE = V , WE = V
)
READ CYCLE 2 (WE = V )
IH
IL IH
FIG. 5
WRITE CYCLE - WE CONTROLLED
tWC
ADDRESS
tAW
tAH
tCW
CS
WE
tAS
tWP
tOW
tDH
tWHZ
tDW
DATA I/O
DATA VALID
WRITE CYCLE 1, WE CONTROLLED
FIG. 6
WRITE CYCLE - CS CONTROLLED
tWC
ADDRESS
WS32K32-XHX
tCW
tAW
tAH
tAS
CS
tWP
WE
tDW
tDH
DATA I/O
DATA VALID
WRITE CYCLE 2, CS CONTROLLED
5
White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com
WS256K32-XXX
PACKAGE 401: 66 PIN, PGA TYPE, CERAMIC HEX-IN-LINE PACKAGE, HIP (H)
30.1 (1.185) ± 0.38 (0.015) SQ
PIN 1 IDENTIFIER
SQUARE PAD
ON BOTTOM
25.4 (1.0) TYP
6.22 (0.245)
MAX
3.81 (0.150)
± 0.1 (0.005)
1.27 (0.050) ± 0.1 (0.005)
0.76 (0.030) ± 0.1 (0.005)
2.54 (0.100)
TYP
1.27 (0.050) TYP DIA
15.24 (0.600) TYP
25.4 (1.0) TYP
0.46 (0.018) ± 0.05 (0.002) DIA
ALL LINEAR DIMENSIONS ARE MILLIMETERS AND PARENTHETICALLY IN INCHES
PACKAGE 501: 68 LEAD, CERAMIC QUAD FLAT PACK, CQFP (G4)
5.1 (0.200) MAX
39.6 (1.56) ± 0.38 (0.015) SQ
1.27 (0.050)
± 0.1 (0.005)
PIN 1 IDENTIFIER
Pin 1
12.7 (0.500)
± 0.5 (0.020)
4 PLACES
5.1 (0.200)
± 0.25 (0.010)
4 PLACES
0.25 (0.010)
± 0.05 (0.002)
1.27 (0.050)
TYP
0.38 (0.015)
± 0.08 (0.003)
68 PLACES
38 (1.50) TYP
4 PLACES
ALL LINEAR DIMENSIONS ARE MILLIMETERS AND PARENTHETICALLY IN INCHES
White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com
6
WS256K32-XXX
ORDERING INFORMATION
W S 256K32 X - XXX X X X
LEAD FINISH:
Blank = Gold plated leads
A = Solder dip leads
DEVICE GRADE:
M= Military Screened
I = Industrial
-55°C to +125°C
-40°C to +85°C
0°C to +70°C
C = Commercial
PACKAGE:
H = Ceramic Hex-In-Line Package, HIP (Package 401)
G4 = 40mm Ceramic Quad Flat Pack, CQFP (Package 501)
ACCESS TIME (ns)
IMPROVEMENT MARK
N = No Connect at pins 21, 28 and 39 in HIP for Upgrades
Blank = Standard Power
L = Low Power Data Retention
ORGANIZATION, 256Kx32
User configurable as 512Kx16
SRAM
WHITE ELECTRONIC DESIGNS CORP.
7
White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com
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