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WEDPY256K72V-XBX Datasheet

  • WEDPY256K72V-XBX

  • SSRAM MCP

  • 12頁

  • ETC

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WEDPY256K72V-XBX
256Kx72 Synchronous Pipeline SRAM
FEATURES
!
Fast clock speed: 100, 133, 150, 166 and 200** MHz
!
Fast access time: 5.0, 4.0, 3.8, 3.5, 3.1ns
!
+3.3V power supply (VDD)
!
+2.5V output buffer supply (VDDQ)
!
Preliminary*
DESCRIPTION
The WEDPY256K72V-XBX employs high-speed, low-power
CMOS designs that are fabricated using an advanced CMOS
process. The 16Mb Synchronous SRAMs integrate two 256K
x 36 SRAMs into a single PBGA package to provide 256K x
72 configuration. All synchronous inputs are controlled by
a positive-edge-triggered single-clock input (CLK). The syn-
chronous inputs include all addresses, all data inputs, and
active LOW chip selects (CS). Asynchronous inputs in-
clude the output enable (OE1/OE2), clock (CLK).
* This data sheet describes a product that is not fully qualified or characterized
and is subject to change without notice.
Single-cycle deselect
Clock-controlled and registered addresses, data I/Os
and control signals
!
Common data inputs and data outputs
!
!
SNOOZE MODE for reduced-power standby
!
Individual BYTE WRITE control and GLOBAL WRITE
!
Six chip enables for simple depth expansion and ad-
dress pipeline
FIG. 1
SA
0-17
ADSC
ADSP
ADV
BWa
BWb
BWc
BWd
BWE
CS1
1
CS2
1
CS2
1
CLK
GW
MODE
OE
1
ZZ
BLOCK DIAGRAM
256Kx36
A
0-17
SSRAM
ADSC
ADSP
ADV
BWa
BWb
BWc
BWd
WE
DQ
0-35
CS
1
CS
2
CS
2
CLK
GW
MODE
OE
ZZ
!
Internally self-timed WRITE cycle
!
Burst control (interleaved or linear burst)
!
Packaging:
!
159-bump PBGA package, 14mm x 22mm
!
Commercial, industrial, and military temperature ranges
!
User configurable as 512K x 36, or 1M x 18
!
Upgradable to 512K x 72 SSRAM
IC1
DQ
0-35
(contact factory for information)
**200 MHz for commercial and industrial temperature only.
256Kx36
A
0-17
SSRAM
ADSC
ADSP
ADV
BWa
BWb
BWc
BWd
WE
CS
1
CS
2
CS
2
CLK
GW
MODE
OE
ZZ
BWe
BWf
BWg
BWh
CS1
1
CS2
2
CS2
2
IC2
DQ
36-71
OE
2
November 2003 Rev. 6
1
White Electronic Designs Corporation 鈥?(602) 437-1520 鈥?www.whiteedc.com

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