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IC41C16257S-60TI Datasheet(PDF) 2 Page - Integrated Circuit Solution Inc |
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IC41C16257S-60TI Datasheet(HTML) 2 Page - Integrated Circuit Solution Inc |
2 / 20 page IC41C16257/IC41C16257S IC41LV16257/IC41LV16257S 2 Integrated Circuit Solution Inc. DR021-0A 08/11/2001 ICSI 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 Circuit Solution Inc. FEATURES • Fast access and cycle time • TTL compatible inputs and outputs • Refresh Interval: 512 cycles/8 ms • Refresh Mode: RAS-Only, CAS-before-RAS (CBR), Hidden • Self Refresh Mode: 512 cycles/64 ms (S version only) • JEDEC standard pinout • Single power supply: — 5V ± 10% (IC41C16257) — 3.3V ± 10% (IC41LV16257) • Byte Write and Byte Read operation via two CAS • Available in 40-pin SOJ and TSOP-2 DESCRIPTION The ICSI IC41C16257 and the IC41LV16257 are 262,144 x 16-bit high-performance CMOS Dynamic Random Access Memory. Fast Page Mode allows 512 random accesses within a single row with access cycle time as short as 12 ns per 16-bit word. The Byte Write control, of upper and lower byte, makes these devices ideal for use in 16-, 32-bit wide data bus systems. These features make the IC41C16257 and the IC41LV16257 ideally suited for high band-width graphics, digital signal processing, high-performance computing systems, and peripheral applications. The IC41C16257 and the IC41LV16257 are packaged in a 40-pin, 400mil SOJ and TSOP-2. 256K x 16 (4-MBIT) DYNAMIC RAM WITH FAST PAGE MODE PIN DESCRIPTIONS A0-A8 Address Inputs I/O0-I/O15 Data Inputs/Outputs WE Write Enable OE Output Enable RAS Row Address Strobe UCAS Upper Column Address Strobe LCAS Lower Column Address Strobe Vcc Power GND Ground NC No Connection 40-Pin SOJ PIN CONFIGURATIONS 40-Pin TSOP-2 KEY TIMING PARAMETERS Parameter -35 -50 -60 Unit Max. RAS Access Time (tRAC)35 50 60 ns Max. CAS Access Time (tCAC)10 14 15 ns Max. Column Address Access Time (tAA)18 25 30 ns Min. Fast Page Mode Cycle Time (tPC)12 20 25 ns Min. Read/Write Cycle Time (tRC) 60 90 110 ns |
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