IS41LV32256 Datasheet | ISSI

FEATURES - 262,144-word by 32-bit organization - Single +3.3V ± 0.3V power supply - Four CAS inputs for Byte Write and Byte Read control - Refresh modes: RAS-Only, CAS-Before-RAS (CBR), and Hidden - 512-cycle refresh in 8 ms - Fast Page Mode with Extended Data Out - 100-pin PQFP, TQFP package ISSI SEPTEMBER 2000 ® DESCRIPTION The ISSI IS41LV32256 is organized in a 262,122 x 32-bit CMOS Dynamic Random Access Memory. Four CAS signals facilitate execution of Byte Read and Byte Write operations. A very fast EDO cycle time of 10 ns allows an operating frequency of 100 MHz and makes the IS41LV32256 an ideal frame buffer memory for graphics applications. The IS41LV32256 is patible with JEDEC standard SGRAMs. This 8-Mbit EDO memory offers a significantly lower latency and a faster memory cycle than the SGRAM. ISSI's IS41LV32256 3.3V 256K x 32 device is pin/voltage patible with all standard SGRAM parts. The IS41LV32256 is available in a 100-pin PQFP and TQFP package. KEY TIMING PARAMETERS Parameter Max. RAS Access Time (t RAC) Max. CAS Access Time (t CAC) Max. Column Address Access Time (t AA) Max. OE Access Time (t OE) Min. Read/Write Cycle Time (t RC) Min. EDO Cycle Time (t PC) -28 28 9 15 9 48 12 -30 30 9 16 9 53 12 -35 35 10 18 10 60 15 Unit ns ns ns ns ns ns ISSI reserves the right to make changes to its products at any time without notice in order to improve design and supply the best possible product. We assume no responsibility for any errors which may appear in this publication. © Copyright 2000, Integrated Silicon Solution, Inc. Integrated Silicon Solution, Inc. Rev. A 09/29/00 FUNCTIONAL BLOCK DIAGRAM OE CLOCK GENERATOR ISSI ® WE CLOCK GENERATOR Data I/O Buffers I/O0-31 CAS0 CAS1 CAS2 CAS3 CAS CLOCK GENERATOR AY0-AY8 COLUMN DECODERS A0-A8 CONTROLS SENSE AMPLIFIERS 512 x 32 AX0-AX8 ROW DECODERS MEMORY ARRAY 256K x 32 RAS CLOCK GENERATOR Integrated Silicon Solution, Inc. Rev. A...