4mb R4000 Secondary Cache Fast Static Ram Module Set , Inc

Four MCM44256B modules comprise a full 4 MB of secondary cache for the R4000 processor. Each module contains nine MCM6729DWJ fast static RAMs for a cache data size of 256K x 36. The tag portion, dependent on word line size, contains either two MCM6729DWJ or one MCM6726DWJ fast static RAMs. All input signals, except A0 and WE are buffered using 74FBT2827 drivers with se- ries 25 resistors. The MCM6729DWJ and MCM6726DWJ are fabricated using highperfor- mance silicongate BiCMOS technology. Static design eliminates the need for internal Clocks or Timing strobes. All 4MB R4000 supported secondary cache options are available. By Freescale Semiconductor, Inc
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