OVERVIEW
ISSI's 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: 200, 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
  IS42S81600E   3.3V  3.3V  
  IS42S16800E   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
•  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