MCM44A64 Datasheet (Motorola) - 1MB R4000 Secondary Cache Fast Static RAM Module Set

MCM44A64, 1MB R4000 Secondary Cache Fast Static RAM Module Set

MOTOROLA SEMICONDUCTOR TECHNICAL DATA Order this document by MCM4464/D MCM4464 Series 1MB R4000 Secondary Cache Fast Static RAM Module Set Four MCM4464 modules comprise a full 1 MB of secondary cache for the R4000 processor.

Each module contains nine MCM6709J fast static RAMs for a cache data size of 64K x 36.

The tag portion, dependent on word line size, contains either two MCM6709J or one MCM6706J fast static RAMs.

All input signals, except A0 and WE are buffered using 74FBT2827 drivers wit

MCM44A64 Features

* e for both DCS and TCS. 3. Transition is measured 200 mV from steady

* state voltage with load of Figure 1B. 4. This parameter is sampled and not 100% tested. WRITE CYCLE 1 A1

* A15 tAVWH A0 tA0VWH DCS/TCS (DATA/TAG ENABLE) tWLEH tWLWH WE (WRITE ENABLE) tA0VWL tAVWL D (DATA IN) tWLQ