GS8180QV18BGD Datasheet, GSI Technology

* Simultaneous Read and Write SigmaQuad™ Interface
* JEDEC-standard pinout and package
* Dual DoubleData Rate interface
* Byte Write controls sampled at d.

where alternating reads and writes are needed. Therefore, the SigmaQuad SRAM interface and truth table are optimized for.

Table Symbol Description SA Synchronous Address Inputs NC No Connect R Synchronous Read W Synchronous Write BW0
  –BW1 Synchronous Byte Writes BW2
  –BW3 Synchronous Byte Writes K Input Clock K Input Clock C Out.