OVERVIEW

ISSIs 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.

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