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IS42S16800D-6B Datasheet(PDF) 1 Page - Integrated Silicon Solution, Inc |
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IS42S16800D-6B Datasheet(HTML) 1 Page - Integrated Silicon Solution, Inc |
1 / 62 page IS42S81600D IS42S16800D Integrated Silicon Solution, Inc. — www.issi.com 1 Rev. E 07/28/08 Copyright © 2006 Integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the right to make changes to this specification and its products at any time without notice. ISSI assumes no liability arising out of the application or use of any information, products or services described herein. Customers are advised to obtain the latest version of this device specification before relying on any published information and before placing orders for products. FEATURES • Clock frequency: 166, 143, 133 MHz • Fully synchronous; all signals referenced to a positive clock edge • Internal bank for hiding row access/precharge • Power supply VDD VDDQ IS42S81600D 3.3V 3.3V IS42S16800D 3.3V 3.3V • LVTTL interface • Programmable burst length – (1, 2, 4, 8, full page) • Programmable burst sequence: Sequential/Interleave • Auto Refresh (CBR) • Self Refresh with programmable refresh periods • 4096 refresh cycles every 64 ms • Random column address every clock cycle • Programmable CAS latency (2, 3 clocks) • Burst read/write and burst read/single write operations capability • Burst termination by burst stop and precharge command • Industrial Temperature Availability • Lead-free Availability OVERVIEW ISSI's 128Mb Synchronous DRAM achieves high-speed data transfer using pipeline architecture. All inputs and outputs signals refer to the rising edge of the clock input.The 128Mb SDRAM is organized as follows. 16Meg x 8, 8Meg x16 128-MBIT SYNCHRONOUS DRAM JULY 2008 KEY TIMING PARAMETERS Parameter -6 -7 -75E Unit Clk Cycle Time CAS Latency = 3 6 7 — ns CAS Latency = 2 8 10 7.5 ns Clk Frequency CAS Latency = 3 166 143 — Mhz CAS Latency = 2 125 100 133 Mhz Access Time from Clock CAS Latency = 3 5.4 5.4 — ns CAS Latency = 2 6.5 6.5 6.5 ns IS42S81600D IS42S16800D 4M x8x4 Banks 2M x16x4 Banks 54-pin TSOPII 54-pin TSOPII 54-ball BGA |
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