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PDF WED2EG472512V-D2 Data sheet ( Hoja de datos )

Número de pieza WED2EG472512V-D2
Descripción DUAL KEY DIMM
Fabricantes White Electronic 
Logotipo White Electronic Logotipo



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White Electronic Designs
WED2EG472512V-D2
ADVANCED*
16MB (4x512Kx72) SYNC BURST PIPELINE,
DUAL KEY DIMM
FEATURES
4x512Kx72 Synchronous Burst
Pipeline Architecture; Dual Cycle Deselect
Linear and Sequential Burst Support via MODE pin
Clock Controlled Registered Module Enable (EM#)
Clock Controlled Registered Bank Enables (E1#,
E2#, E3#, E4#)
Clock Controlled Byte Write Mode Enable (BWE#)
Clock Controlled Byte Write Enables
(BW1#-BW8#)
Clock Controlled Registered Address
Clock Controlled Registered Global Write (GW#)
Asynchronous Output Enable (G#)
Internally Self-Timed Write
Individual Bank Sleep Mode Enables (ZZ1, ZZ2,
ZZ3, ZZ4)
Gold Lead Finish
3.3V ± 10% Operation
Frequency(s): 200, 166, 150 and 133MHZ
Access Apeed(s): tKHQV = 3.0, 3.5, 3.7 and 4.0ns
Common Data I/O
High Capacitance (30pF) Drive, at Rated Access
Speed
Single Total Array Clock
Multiple VCC and GND for Improved Noise Immunity
DESCRIPTION
The WED2EG472512V is a Synchronous/Synchronous
Burst SRAM, 84 position Dual Key; Double High DIMM
(168 contacts) Module, organized as 4x512Kx72. The
Module contains sixteen (16) Synchronous Burst RAM
devices, packaged in the industry standard JEDEC
14mmx20mm TQFP placed on a Multilayer FR4 Substrate.
The Module Architecture is defined as a Sync/SyncBurst,
Pipeline, with support for either linear or sequential burst.
This Module provides high performance, 3-1-1-1 accesses
when used in Burst Mode.
Synchronous Only operations are performed via strapping
ADSC# Low, and ADSP#/ADV# High, which provides for
Ultra Fast Accesses in Read Mode while providing for
internally self-timed Early Writes.
Synchronous/Synchronous Burst operations are in relation
to an externally supplied clock, Registered Address,
Registered Global Write, egistered Enables as well as
an Asynchronous Output Enable. This module has been
defined with full flexibility, which allowes individual control
of each of the eight bytes, as well as Quad Words in both
Read and Write Operations.
* This product is under development, is not qualified or characterized and is subject to
change or cancellation without notice.
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
Jan, 2000
Rev. A
1 White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com

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WED2EG472512V-D2 pdf
White Electronic Designs
WED2EG472512V-D2
ADVANCED
ABSOLUTE MAXIMUM RATINGS*
Voltage on VCC Relative to VSS
VIN
Storage Temperature
Operating Temperature (Commercial)
Operating Temperature (Industrial)
Short Circuit Output Current
-0.3V to +4.6V
-0.3V to VCC +0.5V
-55°C to +125°C
0°C to +70°C
-40°C to +85°C
100mA
* Stress greater than those listed under "Absolute Maxamin Ratings" may cause
permanent damage to the device. This is a stress rating only and functional operation
of the device 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 effect reliability
RECOMMENDED DC OPERATING CONDITIONS
Parameter
Sym Min Typ Max Units
Supply Voltage VCC 3.3 3.3
3.6
V
Supply Voltage VSS 0
0
0
V
Input High
VIH 2.0 3.0 VCC + 0.3 V
Input Low
VIL -0.3 0 0.3 V
Input Leakage ILI -2 1
3 µA
Output Leakage ILO -2
1
2 µA
SYNCHRONOUS ONLY - TRUTH TABLE
Operation
Synchronous Write - Bank 1
Synchronous Read - Bank 1
Synchronous Write - Bank 2
Synchronous Read - Bank 2
Synchronous Write - Bank 3
Synchronous Read - Bank 3
Synchronous Write - Bank 4
Synchronous Read - Bank 4
Snooze Mode
E1# E2# E3# E4# GW# G# ZZ
CK
DQ
L H H H L H L ↑ High-Z
LHHHHL L
H L H H L H L ↑ High-Z
HLHHHL L
H H L H L H L ↑ High-Z
HHLHHL L
H H H L L H L ↑ High-Z
HHHLHL L
X X X X X X H X High-Z
DC ELECTRICAL CHARACTERISTICS READ CYCLE
Description
Power Supply Current
Power Supply Current
Device Selected, No Operation
Snooze Mode
CMOS Standby
Clock Running-Deselect
Sym Typ
Max
5.0 6.0 6.5 7.0
ICC1 1.8 2.6 2.4 2.3 2.2
ICC 875 1.8 1.8 1.3 1.3
ICCZZ 270 350 350 350 350
ICC3 500 700 700 700 700
ICCK 900 1.1 1.1 1.0 1.0
Units
A
A
mA
mA
A
AC TEST LOAD
DQ Output
Z0 = 50
RL = 50
AC TEST CONDITIONS
Input Pulse Levels
Input and Output Timing Ref.
Output test Equivalencies
VSS to 3.0V
1.25V
see figure at left
VL = 1.25V
Output Test Equivalencies
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
Jan, 2000
Rev. A
5 White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com

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