DESCRIPTION

The IC42S81600 and IC42S16800 are high-speed 134,217,728-bit synchronous dynamic randomaccess memories, organized as 4,194,304 x 8 x 4 and 2,097,152 x 16 x 4 (word x bit x bank), respectively.

FEATURES

• Single 3.3V (± 0.3V) power supply

• High speed clock cycle time -6: 166MHz, -7H: 133MHz, -7: 133MHz, -8: 100MHz

• Fully synchronous operation referenced to clock rising edge

• Possible to assert random column access in every cycle

• Quad internal banks contorlled by BA0 & BA1 (Bank Select)

• Byte control by LDQM and UDQM for IC42S16800

• Programmable Wrap sequence (Sequential / Interleave)

• Programmable burst length (1, 2, 4, 8 and full page)

• Programmable CAS latency (2 and 3)

• Automatic precharge and controlled precharge

• CBR (Auto) refresh and self refresh

• X8, X16 organization

• LVTTL compatible inputs and outputs

• 4,096 refresh cycles / 64ms

• Burst termination by Burst stop and Precharge command

• Package 400mil 54-pin TSOP-2