MOTOROLA SEMICONDUCTOR TECHNICAL DATA Order this document by MCM44256B/D 4MB R4000 Secondary Cache Fast Static RAM Module Set 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 series 25 Ω resistors.
The MCM6729DWJ and MCM6726DWJ are fabricated using high–performance silicon–gate BiCMOS technology.
Static design eliminates the need for internal clocks or timing strobes.
All 4M...

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