2.5V pipeline burst synchronous SRAM Features Organization: 1,048

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2.5V pipeline burst synchronous SRAM Features Organization: 1,048

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AS7C251MPFD18A
2.5V pipeline burst synchronous SRAM Features
Organization: 1,048,576 18bits Fast clock speeds 200MHz LVTTL/LVCMOS Fast clock data access: 3.0/3.5/4.0 Fast access time: 3.0/3.5/4.0 Fully synchronous register-to-register operation Single register "Flow-through" mode Dual-cycle deselect Single-cycle deselect also available (AS7C251MPFS18A) Pentium®* compatible architecture timing Asynchronous output enable control Economical 100-pin TQFP package Also offered 119-Ball Ball Grid Array Package) Byte write enables Multiple chip enables easy expansion 2.5V core power supply 2.5V operation NTDTM* pipeline architecture available (AS7C251MNTD18A)
Pentium® registered trademark Intel Corporation. NTDis trademark Alliance Semiconductor Corporation. trademarks mentioned this document property their respective owners.
Logic Block Diagram:
ADSC ADSP A[19:0] Address register Burst logic
Arrangements:
ADSC ADSP 1Mx18 Memory array
Byte write registers Byte write registers Byte write registers Byte write registers Enable register Power down Enable delay register
DATA [17:0]
Selection guide
Minimum cycle time Maximum clock frequency Maximum pipelined clock access time Maximum operating current Maximum standby current Maximum CMOS standby current (DC)
-200
-166
Output registers
Input registers
N.C. N.C. N.C. VDDQ VSSQ N.C. N.C. VSSQ VDDQ VDDQ VSSQ N.C. VSSQ VDDQ N.C. N.C. N.C.
TQFP
N.C. N.C. VDDQ VSSQ N.C. VSSQ VDDQ VDDQ VSSQ N.C. N.C. VSSQ VDDQ N.C. N.C. N.C.
-100
Units
10/5/01; v.0.9.1
Alliance Semiconductor
Copyright Alliance Semiconductor. rights reserved.
AS7C251MPFD18A
Configuration
View
VDDQ VDDQ VDDQ VDDQ VDDQ
DQPb
ADSP ADSC
DQPa
VDDQ VDDQ VDDQ VDDQ VDDQ
10/5/01; v.0.9.1
Alliance Semiconductor
Copyright Alliance Semiconductor Corporation. rights reserved. three-point logo, name Intelliwatt trademarks registered trademarks Alliance. other brand product names trademarks their respective companies. Alliance reserves right make changes this document products time without notice. Alliance assumes responsibility errors that appear this document. data contained herein represents Alliance's best data and/or estimates time issuance. Alliance reserves right change correct this data time, without notice. product described herein under development, significant changes these specifications possible. information this product data sheet intended general descriptive information potential customers users, intended operate provide, guarantee warrantee user customer. Alliance does assume responsibility liability arising application product described herein, disclaims express implied warranties related sale and/or Alliance products including liability warranties related fitness particular purpose, merchantability, infringement intellectual property rights, except express agreed Alliance's Terms Conditions Sale (which available from Alliance). sales Alliance products made exclusively according Alliance's Terms Conditions Sale. purchase products from Alliance does convey license under patent rights, copyrights, mask works rights, trademarks, other intellectual property rights Alliance third parties. Alliance does authorize products critical components life-supporting systems where malfunction failure reasonably expected result significant injury user, inclusion Alliance products such life-supporting systems implies that manufacturer assumes risk such agrees indemnify Alliance against claims arising from such use.

2.5V pipeline burst synchronous SRAM Features Organization: 1,048

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