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WED8L24514V 데이터시트 PDF




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부품번호 WED8L24514V 기능
기능 Asynchronous SRAM
제조업체 White Electronic Designs
로고 White Electronic Designs 로고


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WED8L24514V 데이터시트, 핀배열, 회로
www.DataSheet4U.com
WED8L24514V
Asynchronous SRAM, 3.3V, 512Kx24
FEATURES
n 512Kx24 bit CMOS Static
n Random Access Memory Array
• Fast Access Times: 10, 12, and 15ns
• Master Output Enable and Write Control
• Three Chip Enables for Byte Control
• TTL Compatible Inputs and Outputs
• Fully Static, No Clocks
n Surface Mount Package
• 119 Lead BGA (JEDEC MO-163), No. 391
• Small Footprint, 14mmx22mm
• Multiple Ground Pins for Maximum Noise Immunity
n Single +3.3V (±5%) Supply Operation
n DSP Memory Solution
• Motorola DSP5630x
• Analog Devices SHARCTM
DESCRIPTION
The WED8L24514VxxBC is a 3.3V, twelve megabit SRAM
constructed with three 512Kx8 die mounted on a multi-
layer laminate substrate. With 10 to 15ns access times, x24
width and a 3.3V operating voltage, the WED8L24514V is
ideal for creating a single chip memory solution for the
Motorola DSP5630x or a two chip solution for the Analog
Devices SHARCTM DSP.
The single or dual chip memory solutions offer improved
system performance by reducing the length of board
traces and the number of board connections compared
to using multiple monolithic devices.
The JEDEC Standard 119 lead BGA provides a 61%
space savings over using three 512Kx8, 400 mil wide
SOJs and the BGA package has a maximum height of 110
mils compared to 148 mils for the SOJ packages.
FIG. 1 PIN CONFIGURATION
PIN SYMBOLS
12 3 45 67
A NC
AO
A1
A2 A3
A4 NC
B NC
A5
A6
E0 A7
A8 NC
C I/012
NC
E2
NC E3
NC I/00
D I/013 VCC GND GND GND VCC I/01
E I/014 GND VCC GND VCC GND I/02
F I/015 VCC GND GND GND VCC I/03
G I/016 GND VCC GND VCC GND I/04
H I/017 VCC GND GND GND VCC I/05
J NC GND VCC GND VCC GND NC
K I/018 VCC GND GND GND VCC I/06
L I/019 GND VCC GND VCC GND I/07
M I/020 VCC GND GND GND VCC I/08
N I/021 GND VCC GND VCC GND I/09
P I/022 VCC GND GND GND VCC I/010
R I/023
A18
NC
NC NC
A17 I/011
T NC
A9
A10
W A11 A12 NC
U NC
A13
A14
G A15 A16 NC
PIN N AMES
A0-18
E
W
G
DQ0-23
VCC
GND
NC
Address Inputs
Chip Enable
Master Write Enable
Master Output Enable
Common Data Input/Output
Power (3.3V ±5%)
Ground
No Connection
BLOCK DIAGRAM
A0-A18
G
W
E0
E2
E3
19
512K x 24
Memory
Array
DQ0-7
DQ8-15
DQ16-23
September 2001 Rev. 2
ECO #14670
1 White Electronic Designs Corporation • (508) 366-5151 • www.whiteedc.com




WED8L24514V pdf, 반도체, 판매, 대치품
WED8L24514V
AC CHAR ACTERISTICS WRITE CYCLE
Parameter
Write Cycle Time
Chip Enable to End of Write
Address Setup Time
Address Valid to End of Write
Write Pulse Width
Write Recovery Time
Data Hold Time
Write to Output in High Z1
Data to Write Time
Output Active from End of Write1
Symbol
JEDEC
tAVAV
tELWH
tELEH
tAVWL
tAVEL
tAVWH
tAVEH
tWLWH
tWLEH
tWHAX
tEHAX
tWHDX
tEHDX
tWLQZ
tDVWH
tDVEH
tWHQX
Alt.
tWC
tCW
tCW
tAS
tAS
tAW
tAW
tWP
tWP
tWR
tWR
tDH
tDH
tWHZ
tDW
tDW
tWLZ
NOTE 1: Parameter is guaranteed, but not tested.
10ns
Min
Max
10
8
8
0
0
8
8
8
8
0
0
0
0
05
5
5
3
12ns
Min
Max
12
9
9
0
0
9
9
10
10
0
0
0
0
06
6
6
3
15ns
Min
Max
15
9
9
0
0
10
10
11
11
0
0
0
0
07
7
7
3
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
FIG. 6 WRITE CYCLE 1 - W CONTROLLED
tAVAV
A
tAVWH
tELWH
E
tAVWL
tWLWH
W
tWHAX
tDVWH
tWHDX
D DATA VALID
tWLQZ
tWHQX
Q HIGH Z
White Electronic Designs Corporation • Westborough, MA • (508) 366-5151
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WED8L24514V

Asynchronous SRAM

White Electronic Designs
White Electronic Designs

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