MCM44256 - 4MB R4000 Secondary Cache Fast Static RAM

Motorola Semiconductor (now NXP Semiconductors)

Datasheet Details

Part number	MCM44256
Manufacturer	Motorola Semiconductor (now NXP Semiconductors)
File Size	232.44 KB
Description	4MB R4000 Secondary Cache Fast Static RAM
Datasheet	MCM44256 Datasheet

Other Datasheets by Motorola Semiconductor (now NXP Semiconductors)

Part Number	Description
MCM44256B	4MB R4000 Secondary Cache Fast Static RAM Module Set
MCM4464	1MB R4000 Secondary Cache Fast Static RAM Module Set
MCM44A256B	4MB R4000 Secondary Cache Fast Static RAM Module Set
MCM44A64	1MB R4000 Secondary Cache Fast Static RAM Module Set
MCM44B256B	4MB R4000 Secondary Cache Fast Static RAM Module Set
MCM44B64	1MB R4000 Secondary Cache Fast Static RAM Module Set
MCM44C256B	4MB R4000 Secondary Cache Fast Static RAM Module Set
MCM44C64	1MB R4000 Secondary Cache Fast Static RAM Module Set
MCM44D256B	4MB R4000 Secondary Cache Fast Static RAM Module Set
MCM44D64	1MB R4000 Secondary Cache Fast Static RAM Module Set

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MOTOROLA • SEMICONDUCTOR TECHNICAL DATA 4MB R4000 Secondary Cache Fast Static RAM Module Set Four MCM44256 modules comprise a full 4 MB of secondary cache for the R4000 processor. Each module contains nine MCM6729WJ fast static RAMs for a cache data size of 256K x 36. The tag portion, dependent on word line size, contains either two MCM6729WJ or one MCM6726WJ fast static RAMs. All input signals, except AO and WE are buffered using 74FBT2827 drivers with series 25 Q resistors. The MCM6729WJ and MCM6726WJ are fabricated using high-performance silicon-gate BiCMOS technology. Static design eliminates the need for internal clocks or timing strobes. All 4MB R4000 supported secondary cache options are available.