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8P012SRV3204I15

型号：

8P012SRV3204I15

品牌：

WEDC[ WHITE ELECTRONIC DESIGNS CORPORATION ]

页数：

11 页

PDF大小：

183 K

下载PDF手册
SRV31-SRV34  
White Electronic Designs  
PCMCIA FLASH MEMORY CARD — SRV30 SERIES  
SRAM Memory Card 2MB Through 16MB  
FEATURES  
GENERAL DESCRIPTION  
ꢀ
High Performance SRAM memory Card  
The WEDC SRAM Series (SRV30) memory cards offer  
a high performance nonvolatile storage solution for code  
and data storage, disk caching, and write intensive mobile  
and embedded applications.  
ꢀ
Universal 3.3 to 5 Volt Supply allows for wider  
compatibility between systems.  
ꢀ
ꢀ
ꢀ
Fast Access times: 150ns @ 3.3V – 5V  
x8/x16 PCMCIA standard interface  
Packaged in PCMCIA type I or type II housing (type II  
for cards with extended battery backup time), the WEDC  
SRAM SRV30 series is based on high density and super  
low power SRAM memory devices, providing densities  
from 2MBytes to 16MBytes.  
Low Power CMOS technology provides very low  
power and reliable data retention characteristics  
• standby current < 100µA typical  
The SRV30 series of SRAM memory cards has a universal  
wide power supply (3V to 5V) and operates at speeds as  
high as 150ns. The cards are based on advanced CMOS  
technology providing very low power and reliable data  
retention characteristics. WEDC’s SRAM cards contain  
a rechargeable lithium battery and recharge circuitry,  
eliminating the need for replaceable batteries found in  
many SRAM cards.  
ꢀ
Rechargeable Lithium battery with recharge  
circuitry  
• eliminates the need for replaceable batteries  
• standby current during recharge typically < 2mA  
• battery backup time  
– 18 months - type I card  
– 40 months - type II card  
typical based on 4MB  
WEDC’s standard cards are shipped with WEDC’s SRAM  
Logo. Cards are also available with blank housings  
(no Logo). The blank housings are available in both a  
recessed (for label) and flat housing. Please contact  
WEDC sales representative for further information on  
Custom artwork.  
ꢀ
ꢀ
Unlimited write cycles, no endurance issues  
Optional Features:  
• 2KB EEPROM attribute memory containing CIS  
• Optional Hardware Write Protect switch  
PC Card Standard Type I or Type II Form Factor  
ꢀ
January 2000  
Rev. 0  
1
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com  
SRV31-SRV34  
White Electronic Designs  
BLOCK DIAGRAM  
16MB SRAM Card Shown  
[A1..A19]  
address  
buffer  
SRAM  
2M x 8  
SRAM  
2M x 8  
SRAM  
2M x 8  
SRAM  
2M x 8  
[A20..A22]  
CSHi#  
CSLi#  
SRAM  
2M x 8  
SRAM  
2M x 8  
+
+
+ +  
+
decoder  
and  
CE1#  
CE2#  
WE#  
OE#  
REG#  
A0  
CSHi#  
SRAM  
2M x 8  
control  
logic  
SRAM  
2M x 8  
CS-A#  
RD#  
RD#  
WR#  
WR#  
CTRL  
[A1..A11]  
CS-A#  
RD#  
S1  
ATTRIBUTE  
MEMORY  
Vcc  
WP  
WR#  
Write Prot  
Switch  
VS1  
VS2  
GND  
NC  
NC  
CTRL  
I/O BUFFER  
[DO..D7]  
[D8..D15]  
[DO..D7]  
[D8..D15]  
Vcc  
+
Notes: 1. pull down resistor (min 100k)  
2. pull up resistor (min 10k)  
Power Management  
and  
BVD1  
BVD2  
to internal  
power  
Battery Control  
+
supply  
Lithium Bat.  
January 2000  
Rev. 0  
2
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com  
SRV31-SRV34  
White Electronic Designs  
PINOUT  
Pin  
1
2
3
4
5
6
7
8
Signal name  
GND  
DQ3  
DQ4  
DQ5  
DQ6  
DQ7  
CE1#  
A10  
OE#  
A11  
I/O  
Function  
Ground  
Data bit 3  
Data bit 4  
Data bit 5  
Active  
Pin  
35  
36  
37  
38  
39  
40  
41  
42  
43  
44  
45  
46  
47  
48  
49  
50  
51  
52  
53  
54  
55  
56  
57  
58  
59  
60  
61  
62  
63  
64  
65  
66  
67  
68  
Signal name  
GND  
CD1#  
DQ11  
DQ12  
DQ13  
DQ14  
DQ15  
CE2#  
VS1  
I/O  
Function  
Ground  
Card Detect 1  
Data bit 11  
Data bit 12  
Data bit 13  
Data bit 14  
Data bit 15  
Card Enable 2  
Voltage Sense 1  
Active  
I/O  
I/O  
I/O  
I/O  
I/O  
I
I
I
I
I
I
I
I
I
O
O
I/O  
I/O  
I/O  
I/O  
I
LOW  
Data bit 6  
Data bit 7  
Card enable 1  
Address bit 10  
Output enable  
Address bit 11  
Address bit 9  
Address bit 8  
Address bit 13  
Address bit 14  
Write Enable  
Ready/Busy  
Supply Voltage  
Prog. Voltage  
Address bit 16  
Address bit 15  
Address bit 12  
Address bit 7  
Address bit 6  
Address bit 5  
Address bit 4  
Address bit 3  
Address bit 2  
Address bit 1  
Address bit 0  
Data bit 0  
LOW  
LOW  
I
O
LOW  
N.C.  
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
N.C.  
N.C.  
A17  
A18  
A19  
A20  
A21  
Vcc  
Vpp2  
A22  
A23  
A24  
A25  
A9  
A8  
I
I
I
I
I
Address bit 17  
Address bit 18  
Address bit 19  
Address bit 20  
Address bit 21  
Supply Voltage  
Prog. Voltage  
Address bit 22  
Address bit 23  
Address bit 24  
Address bit 25  
Voltage Sense 2  
A13  
A14  
WE#  
RDY/BSY#  
Vcc  
Vppl  
A16  
A15  
A12  
A7  
A6  
A5  
A4  
A3  
A2  
A1  
A0  
DQ0  
DQ1  
DQ2  
WP  
LOW  
N.C.  
2MB(2)  
4MB(2)  
N.C.  
N.C.  
8MB(2,4)  
16MB(2,3)  
N.C.  
N.C.  
N.C.  
I
I
I
I
I
I
I
I
I
VS2  
N.C.  
O
O
Wait#  
N.C.  
REG#  
BVD2  
BVD1  
DQ8  
Extended Bus Cycle  
Low  
I
O
O
I/O  
I/O  
O
Attrib Mem Select  
Bat. Volt. Detect 2  
Bat. Volt. Detect 1  
Data bit 8  
Data bit 9  
Data bit 10  
Card Detect 2  
Ground  
Low  
(5)  
(5)  
I
I
I/O  
I/O  
I/O  
O
Data bit 1  
Data bit 2  
Write Potect  
Ground  
DQ9  
DQ10  
CD2#  
GND  
HIGH  
O
LOW  
GND  
Notes:  
1. CD1# and CD2# are grounded internal to PC Card.  
2. Shows density for which specified address bit is MSB. Higher order address bits are  
no connects (ie 1MB A19 is MSB, A20 - A21 are NC).  
3. The A23 Address line for 16MB capacities is also used for 12MB cards.  
4. VS1 is grounded and VS2 is open to indicate a 3.3V/5V card, with a 5V key, has  
been inserted.  
5. BVD1 and BVD2 are open drain outputs with a 10KOhm internal pull-up resistors  
January 2000  
Rev. 0  
3
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com  
SRV31-SRV34  
White Electronic Designs  
PACKAGE DIMENSIONS  
Type I  
Interconnect area  
3.0mm MIN  
10.0mm MIN  
1.6mm  
(0.400”)  
0.05  
1.0mm 0.05  
(0.039”)  
(0.063”)  
Substrate area  
54.0mm 0.10  
(2.126”)  
85.6mm 0.20  
(3.370”)  
1.0mm 0.05  
(0.039”)  
NOTE 1  
10.0mm MIN  
(0.400”)  
3.3mm T1 (0.130”)  
T1=0.10mm interconnect area  
T1=0.20mm substrate area  
Type II  
1.6mm  
85.6mm 0.20  
(3.370”)  
3.0mm MIN  
0.05  
(0.063”)  
1.0mm 0.05  
(0.039”)  
Substrate area  
54.0mm 0.10  
(2.126”)  
1.0mm 0.05  
(0.039”)  
10.0mm MIN  
0.400”  
Interconnect area  
5.0mm T1  
(0.197”)  
Note 1: this dimension (1mm) allows insertion to 5V and 3V sockets  
January 2000  
Rev. 0  
4
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com  
SRV31-SRV34  
White Electronic Designs  
CARD SIGNAL DESCRIPTION  
Symbol  
Type  
Name and Function  
A0 - A25  
INPUT  
ADDRESS INPUTS: A0 through A25 enable direct addressing of up to 64MB of memory on the card. Signal A0 is not  
used in word access mode. A25 is the most significant bit. (address pins used are based on card density,see pinout  
for highest used address pin)  
DQ0 - DQ15  
CE1#, CE2#  
INPUT/OUTPUT  
INPUT  
DATA INPUT/OUTPUT: DQ0 THROUGH DQ15 constitute the bi-directional databus. DQ0 - DQ7 constitute the lower  
(even) byte and DQ8 - DQ15 the upper (odd) byte. DQ15 is the MSB.  
CARD ENABLE 1 AND 2: CE1# enables even byte accesses, CE2# enables odd byte accesses. Multiplexing A0,  
CE1# and CE2# allows 8-bit hosts to access all data on DQ0 - DQ7.  
OE#  
INPUT  
OUTPUT ENABLE: Active low signal enabling read data from the memory card.  
WRITE ENABLE: Active low signal gating write data to the memory card.  
READY/BUSY OUTPUT: Not used for SRAM cards  
CARD DETECT 1 and 2: Provide card insertion detection. These signals are connected to ground internally on the  
memory card. The host socket interface circuitry shall supply 10K-ohm or larger pull-up resistors on these signal pins.  
WE#  
INPUT  
RDY/BSY#  
CD1#, CD2#  
OUTPUT  
OUTPUT  
WP  
OUTPUT  
N.C.  
WRITE PROTECT: Follows hardware Write Protect Switch. When Switch is placed in on position, signal is pulled high  
(10K ohm). When switch is off signal is pulled low.  
VPP1, VPP2  
VCC  
PROGRAM/ERASE POWER SUPPLY: Not used for SRAM cards.  
CARD POWER SUPPLY: 5.0V for all internal circuitry.  
GND  
GROUND: for all internal circuitry.  
REG#  
INPUT  
ATTRIBUTE MEMORY SELECT: only used with cards built with optional attribute memory.  
RESET: Not used for SRAM cards  
RST  
INPUT  
WAIT#  
BVD1, BVD2  
OUTPUT  
OUTPUT  
WAIT: This signal is pulled high internally for compatibility. No wait states are generated.  
BATTERY VOLTAGE DETECT: Provides status of Battery voltage.  
BVD2 = BVD1 = VOH (battery voltage is guaranteed to retain data)  
BVD2 = VOL, BVD1 = Voh (data is valid, battery recharge required)  
BVD2 = BVD1 = VOL (data may no longer be valid, battery requires extended recharge)  
VS1, VS2  
OUTPUT  
VOLTAGE SENSE: Notifies the host socket of the card’s VCC requirements. VS1 and VS2 are open to indicate a 5V,  
16 bit card has been inserted.  
RFU  
N.C.  
RESERVED FOR FUTURE USE  
NO INTERNAL CONNECTION TO CARD: pin may be driven or left floating  
FUNCTIONAL TRUTH TABLE  
READ function  
Function Mode  
Standby Mode  
Common Memory  
D15-D8  
Attribute Memory  
D15-D8  
CE2# CE1# A0 OE# WE#  
REG#  
D7-D0  
High-Z  
Even-Byte  
Odd-Byte  
Even-Byte  
High-Z  
REG#  
D7-D0  
High-Z  
Even-Byte  
Not Valid  
Even-Byte  
High-Z  
H
H
H
L
H
L
L
L
H
X
L
H
X
X
X
L
L
L
L
X
H
H
H
H
X
H
H
H
H
High-Z  
High-Z  
High-Z  
Odd-Byte  
Odd-Byte  
X
L
L
L
L
High-Z  
High-Z  
High-Z  
Not Valid  
Not Valid  
Byte Access (8 bits)  
Word Access (16 bits)  
Odd-Byte Only Access  
L
WRITE function  
Standby Mode  
Byte Access (8 bits)  
H
H
H
L
H
L
L
L
H
X
L
H
X
X
X
H
H
H
H
X
L
L
L
L
X
H
H
H
H
X
X
X
X
X
L
L
L
L
X
X
X
X
X
X
Even-Byte  
Odd-Byte  
Even-Byte  
X
Even-Byte  
X
Even-Byte  
X
Word Access (16 bits)  
Odd-Byte Only Access  
Odd-Byte  
Odd-Byte  
L
January 2000  
Rev. 0  
5
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com  
SRV31-SRV34  
White Electronic Designs  
ABSOLUTE MAXIMUM RATINGS2  
Operating Temperature TA (ambient)  
Notes: 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  
at these or any other conditions greater than those indicated in the operational sections  
of this specification is not implied. Exposure to absolute maximum rating conditions for  
extended periods may affect reliability.  
Commercial  
Industrial  
0°C to +60 °C  
-40°C to +85 °C  
Storage Temperature  
Commercial  
0°C to +60 °C  
Industrial  
Voltage on any pin relative to VSS  
-40°C to +85 °C  
-0.5V to VCC+0.5V (1)  
-0.5V to +7.0V  
VCC supply Voltage relative to VSS  
DC CHARACTERISTICS1  
CMOS Test Conditions: VIL = VSS 0.2V, VIH = 5V 0.2V, VCC = 3.3V or 5V  
Sym  
ICC  
Parameter  
VCC Active Current  
Density  
All  
Notes  
1
Min  
Typ(3)  
Max  
25  
Units  
mA  
Test Conditions  
VCC = 5.25V  
tcycle = 150ns  
ICCS  
ILI  
VCC Standby Current  
Input Leakage Current  
Output Leakage Current  
Input Low Voltage  
All  
All  
All  
All  
All  
2,4!  
5,6  
6
< 1  
10  
20  
20  
mA  
µA  
µA  
V
VCC = 5.25V  
Control Signals = VCC  
VCC = VCC MAX  
VIN =VCC or VSS  
VCC = VCC MAX  
VOUT =VCC or VSS  
VCC = 3V  
VCC = 5.25V  
VCC = 3V  
VCC = 5.25V  
ILO  
VIL  
VIH  
6
0.9  
1.6  
VCC +0.5  
VCC +0.5  
Input High Voltage  
6
2.1  
3.85  
V
VOL  
VOH  
Output Low Voltage  
Output High Voltage  
All  
All  
6
6
0.4  
V
V
IOL = 3.2mA  
IOH = -2.0mA  
2.4  
2.8  
Notes:  
1. All currents are for x16 mode and are RMS values unless otherwise specified.  
2. Control Signals: CE1#, CE2#, OE#, WE#, REG#.  
3. Typical: VCC = 5V, T = +25C.  
4. ICCS includes battery recharge current. Value depends on battery discharge level. ICCS min is specified for fully charged battery.  
I
CCS typical value is specified for battery discharge to 2.7V. ICCS max is specified for a fully discharged battery (0V). Battery will recharge to 1.5V in 20 sec.  
5. Values are the same for byte and word wide modes for all card densities.  
6. Exceptions: Leakage currents on CE1#, CE2#, OE#, REG# and WE# will be < 500 µA when VIN = GND due to internal pull-up resistors  
BATTERY CHARACTERISTICS  
SRV31-34  
Parameter  
Battery Life  
Density  
All  
Notes  
(1)  
Type I  
Type II  
Units  
years  
Conditions  
Normal operation, T=25C  
min 10  
2MB  
4MB  
8MB  
12MB  
16MB  
(2)  
18  
18  
12  
10  
9
40  
40  
30  
25  
20  
Battery backup time is a calculated value and is not  
guaranteed. This should not be used to schedule battery  
recharging. (Temp 25°C)  
Battery  
Backup Time  
months  
(typical)  
Notes:  
1. Battery Life refers to functional lifetime of battery.  
2. Battery backup time is density and temperature dependent.  
January 2000  
Rev. 0  
6
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com  
SRV31-SRV34  
White Electronic Designs  
AC CHARACTERISTICS  
Read Timing Parameters  
SYM (PCMCIA)  
tRC  
ta(A)  
ta(CE)  
ta(OE)  
tsu(A)  
tsu(CE)  
th(A)  
Parameter  
Read Cycle Time  
Address Access Time  
Min  
150  
Max  
Unit  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
150  
150  
75  
Card Enable Access Time  
Output Enable Access Time  
Address Setup Time  
Card Enable Setup Time  
Address Hold Time  
Card Enable Hold Time  
Output Hold from Address Change  
Output Disable Time from CE#  
Output Disable Time from OE#  
Output Enable Time from CE#  
Output Enable Time from OE#  
20  
0
20  
20  
0
th(CE)  
tv(A)  
tdis(CE)  
75  
75  
t
dis(OE)  
tdis(CE)  
dis(CE)  
5
5
t
Note: AC timing diagrams and characteristics are guaranteed to meet or exceed PCMCIA 2.1 specifications.  
Read Timing Diagram  
tc(R)  
ta(A)  
th(A)  
A[25::0], REG#  
CE1#, CE2#  
tv(A)  
ta(CE)  
tsu(CE)  
NOTE 1  
NOTE 1  
th(CE)  
ta(OE)  
tsu(A)  
tdis(CE)  
OE#  
tdis(OE)  
ten(OE)  
D[15::0]  
DATA VALID  
Note: Signal may be high or low in this area.  
January 2000  
Rev. 0  
7
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com  
SRV31-SRV34  
White Electronic Designs  
AC CHARACTERISTICS  
Write Timing Parameters  
SYM (PCMCIA)  
tCW  
tw(WE)  
Parameter  
Write Cycle Time  
Write Pulse Width  
Address Setup Time  
Address Setup Time for WE#  
Card Enable Setup Time for WE#  
Data Setup Time for WE#  
Data Hold Time  
Min  
150  
80  
Max  
Unit  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
tsu(A)  
20  
tsu(A-WEH)  
tsu(CE-WEH)  
tsu(D-WEH)  
th(D)  
trec(WE)  
tdis(WE)  
tdis(OE)  
ten(WE)  
tdis(OE)  
tsu(OE-WE)  
th(OE-WE)  
tsu(CE)  
100  
100  
50  
20  
20  
Write Recover Time  
Output Disable Time from WE#  
Output Disable Time from OE#  
Output Enable Time from WE#  
Output Enable Time from OE#  
Output Enable Setup from WE#  
Output Enable Hold from WE#  
Card Enable Setup Time from OE#  
Card Enable Hold Time  
75  
75  
5
5
10  
10  
0
th(CE)  
20  
Note: AC timing diagrams and characteristics are guaranteed to meet or exceed PCMCIA 2.1 specifications.  
Write Timing Diagram  
tc(W)  
A [25::0], REG#  
tsu(A-WEH)  
trec(WE)  
tsu(CE-WEH)  
th(CE)  
tsu(CE)  
CE1#, CE2#  
OE#  
NOTE 1  
NOTE 1  
th(OE-WE)  
th(D)  
tw(WE)  
tsu(A)  
WE#  
tsu(OE-WE)  
NOTE 2  
tsu(D-WEH)  
D[15::0](Din)  
DATA INPUT  
tdis(WE)  
tdis(OE)  
ten(OE)  
ten(WE)  
NOTE 2  
D[15::0](Dout)  
Note:  
1. Signal may be high or low in this area.  
2. When the data I/O pins are in the output state, no signals shall be  
applied to the data pins (D15 -D0) by the host system.  
January 2000  
Rev. 0  
8
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com  
SRV31-SRV34  
White Electronic Designs  
PRODUCT MARKING  
WED 8P016SRV3100C15 C995 9915  
EDI  
Date code  
Lot code / trace number  
Part number  
Company Name  
Note:  
Some products are currently marked with our pre-merger company name/  
acronym (EDI). During our transition period, some products will also be marked  
with our new company name/acronym (WED). Starting October 2001 all  
PCMCIA products will be marked only with the WED prefix.  
PRODUCT NUMBERING  
8 P 016 SRV31 00 C 15  
Card access time  
15  
25  
150ns  
250ns  
Temperature range  
C
I
Commercial  
Industrial  
0°C to +70°C  
-40°C to +85°C  
Packaging option  
00 Standard, type 1  
Card family and version  
– See Card Family and Version Info. for  
details (next page)  
Card capacity  
016 16MB  
PC card  
P
R
Standard PCMCIA  
Ruggedized PCMCIA  
Card technology  
7
8
FLASH  
SRAM  
January 2000  
Rev. 0  
9
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com  
SRV31-SRV34  
White Electronic Designs  
ORDERING INFORMATION  
8P XXX SRV YY SS T ZZ  
where  
XXX: 002  
004  
2MB  
4MB  
6MB  
8MB  
12MB  
16MB  
006  
008  
012  
016  
YY:  
SS:  
31  
32  
33  
34  
no attribute memory, no Write Protect Switch  
with attribute memory, no Write Protect Switch  
with Write Protect Switch, no attribute memory  
with attribute memory, with Write Protect Switch  
00  
01  
02  
03  
04  
05  
WEDC SRAM Logo Type I  
Blank Housing,  
Blank Housing,  
Type I  
Type I Recessed  
WEDC SRAM Logo, Type II  
(extended battery backup time)  
Blank Housing,  
Blank Housing,  
Type II  
(extended battery backup time)  
(extended battery backup time)  
Type II Recessed  
T:  
C
I
Commercial  
Industrial  
ZZ:  
15  
150ns  
January 2000  
Rev. 0  
10  
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com  
SRV31-SRV34  
White Electronic Designs  
Document Title  
PCMCIA FLASH Memory Card — SRV30 Series  
SRAM Memory Card 2MB through 16MB  
Revision History  
Rev #  
History  
Release Date Status  
Rev 0  
Initial release  
1-23-02  
January 2000  
Rev. 0  
11  
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com  
厂商 型号 描述 页数 下载

WEDC

 		8P001SRA0100C15 [ SRAM Card, 512KX16, 150ns, CMOS, CADR1-68 ] 10 页

WEDC

 		8P001SRA0100I15 [ SRAM Card, 512KX16, 150ns, CMOS, CADR1-68 ] 10 页

WEDC

 		8P001SRA0103C15 [ SRAM Card, 512KX16, 150ns, CMOS, CARD2-68 ] 10 页

WEDC

 		8P001SRA0104I15 [ SRAM Card, 512KX16, 150ns, CMOS, CARD2-68 ] 10 页

WEDC

 		8P001SRA0202C15 [ SRAM Card, 512KX16, 150ns, CMOS, CADR1-68 ] 10 页

WEDC

 		8P001SRA0202I15 [ SRAM Card, 512KX16, 150ns, CMOS, CADR1-68 ] 10 页

WEDC

 		8P001SRA0203C15 [ SRAM Card, 512KX16, 150ns, CMOS, CARD2-68 ] 10 页

WEDC

 		8P001SRA0203I15 [ SRAM Card, 512KX16, 150ns, CMOS, CARD2-68 ] 10 页

WEDC

 		8P001SRA0204C15 [ SRAM Card, 512KX16, 150ns, CMOS, CARD2-68 ] 10 页

WEDC

 		8P001SRA0204I15 [ SRAM Card, 512KX16, 150ns, CMOS, CARD2-68 ] 10 页

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