K4F641612B

K4F661612B,K4F641612B CMOS DRAM 4M x 16bit CMOS Dynamic RAM with Fast Page Mode DESCRIPTION This is a family of 4,194,304 x 16 bit Fast Page Mode CMOS DRAMs. Fast Page Mode offers high speed random access of memory cells within the same row. Refresh cycle(4K Ref. or 8K Ref.), access time (-45, -50 or -60), power consumption(Normal or Low power) are optional features of this family. All of this family have CAS-before-RAS refresh, RAS-only refresh and Hidden refresh capabilities. Furthermore, Self-refresh operation is available in L-version. This 4Mx16 Fast Page Mode DRAM family is fabricated using Samsung ′s advanced CMOS process to realize high band-width, low power consumption and high reliability. FEATURES Part Identification - K4F661612B-TC/L(3.3V, 8K Ref., TSOP) - K4F641612B-TC/L(3.3V, 4K Ref., TSOP) Fast Page Mode operation 2CAS Byte/Word Read/Write operation CAS-before-RAS refresh capability RAS-only and Hidden refresh capability Self-refresh capability (L-ver only) Fast parallel test mode capability LVTTL(3.3V) compatible inputs and outputs Unit : mW Early Write or output enable controlled write JEDEC Standard pinout Available in Plastic TSOP(II) packages +3.3V±0.3V power supply 4K 468 432 396 Active Power Dissipation Speed -45 -50 -60 Refresh Cycles Part NO. K4F661612B* K4F641612B Refresh cycle 8K 4K Refresh time Normal 64ms L-ver 128ms RAS UCAS LCAS W 8K 360 324 288 FUNCTIONAL BLOCK DIAGRAM Control Clocks Vcc Vss Lower Data in Buffe...