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SMX55161A-80GBM Datasheet(PDF) 1 Page - Austin Semiconductor |
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SMX55161A-80GBM Datasheet(HTML) 1 Page - Austin Semiconductor |
1 / 64 page VRAM SM55161A Production Austin Semiconductor, Inc. AustinSemiconductor,Inc.reservestherighttochangeproductsorspecificationswithoutnotice. 1 SMJ55161A Rev. 1.6 03/05 FEATURES • Organization: – DRAM: 262 144 by 16 Bits – SAM: 512 by 16 Bits • Dual-Port Accessibility – Simultaneous and Asynchronous Access From the DRAM and SAM Ports • Bidirectional Data-Transfer Function From the DRAM to the Serial-Data Register, and from Serial Data Register to DRAM • (8 x 8) x 2 Block Write feature for fast area fill • Write-Per-Bit Feature for Selective Write to Each RAM I/O; Two Write-Per-Bit Modes to Simplify System Design • Byte-Write Control (CASL, CASU) Provides Flexibility • Extended Data Output for Faster System Cycle Time • Enhanced Page-Mode Operation for Faster Access • CAS-Before-RAS (CBR) and Hidden-Refresh Modes • Long Refresh Period: Every 8 ms (Maximum) • Up to 50-MHz Uninterrupted Serial-Data Streams • 512 Selectable Serial-Register Starting Locations • SE-Controlled Register-Status QSF • Split-Register-Transfer Read for Simplified Real-Time Register Load • Programmable Split-Register Stop Point • 3-State Serial Outputs Allow Easy Multiplexing of Video-Data Streams • Pin-out Compatible upgrade from SM55161 • Compatible With JEDEC Standards 262144 x 16 BIT VRAM MULTIPORT VIDEO RAM PIN ASSIGNMENT (Top View) 64-Pin Ceramic Flatpack (HKC) OPTIONS MARKING • Timing 70ns access -70 75ns access -75 80ns access -80 • Package 68 pin PGA GB 64 pin Flatpack HKC • Operating Temperature Ranges - Military (-55oC to +125oC) M suffix - Industrial (-40oC to +85oC) I suffix For more products and information please visit our web site at www.austinsemiconductor.com AVAILABLE AS MILITARY SPECIFICATIONS • Military Processing Flow(SM Level) • -55C to 125C temperature PIN DESCRIPTIONS PIN DESCRIPTION A0-A8 Address inputs CASL\, CASU\ Column-Address Strobe/Byte Selects DQ0-DQ15 DRAM Data I/O, Write Mask Data Special Function Select DSF Special-Function Select NC/GND No Connect/Ground (NOTE: Not connected internally to VSS) QSF Special-Function Output RAS\ Row-Address Strobe SC Serial Clock SE\ Serial Enable SQ0-SQ15 Serial-Data Output TRG\ Output Enable, Transfer Select VCC 5V Supply (TYP) VSS Ground WE\ DRAM Write-Enable Select |
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