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IDT723631L30PQF Datasheet(PDF) 1 Page - Integrated Device Technology |
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IDT723631L30PQF Datasheet(HTML) 1 Page - Integrated Device Technology |
1 / 23 page Integrated Device Technology, Inc. COMMERCIAL TEMPERATURE RANGE MAY 1997 ©1997 Integrated Device Technology, Inc. DSC-3023/3 IDT723631 IDT723641 IDT723651 CMOS SyncFIFO™ 512 x 36, 1024 x 36, 2048 x 36 FUNCTIONAL BLOCK DIAGRAM FEATURES: • Free-running CLKA and CLKB can be asynchronous or coincident (permits simultaneous reading and writing of data on a single clock edge) • Clocked FIFO buffering data from Port A to Port B • Storage capacity: IDT723631 - 512 x 36 IDT723641 - 1024 x 36 IDT723651 - 2048 x 36 • Synchronous read retransmit capability • Mailbox register in each direction • Programmable Almost-Full and Almost-Empty flags • Microprocessor interface control logic • Input-Ready (IR) and Almost-Full ( AF) flags synchronized by CLKA • Output-Ready (OR) and Almost-Empty ( AE) flags syn- chronized by CLKB • Low-power 0.8-micron advanced CMOS technology • Supports clock frequencies up to 67 MHz • Fast access times of 11 ns • Available in 132-pin plastic quad flat package (PQF) or space-saving 120-pin thin quad flat package (TQFP) • Industrial temperature range (-40 °C to +85°C) is avail- able, tested to military electrical specifications DESCRIPTION: The IDT723631/723641/723651 is a monolithic high- speed, low-power, CMOS clocked FIFO memory. It supports clock frequencies up to 67 MHz and has read access times as fast as 12ns. The 512/1024/2048 x 36 dual-port SRAM FIFO buffers data from port A to Port B. The FIFO memory has retransmit capability, which allows previously read data to be accessed again. The FIFO has flags to indicate empty and full conditions and two programmable flags (almost full and al- most empty) to indicate when a selected number of words is The IDT logo is a registered trademark and SyncFIFO is a trademark of Integrated Device Technology, Inc. Mail 1 Register CLKA CSA W/ RA ENA MBA Port-A Control Logic Reset Logic RST CLKB CSB W/RB ENB MBB Port-B Control Logic MBF1 OR AE B0 - B35 3023 drw 01 Mail 2 Register Write Pointer Read Pointer Status Flag Logic MBF2 IR AF FS0/SD FS1/ SEN Flag Offset Registers A0 - A35 10 RTM RFM 512 x 36 1024 x 36 2048 x 36 SRAM 36 1 For latest information contact IDT's web site at www.idt.com or fax-on-demand at 408-492-8391. |
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