Update: 29 September, 2023
The MCM4464 series is a fast static RAM module for the R4000 processor, consisting of four MCM4464 modules that provide a total of 1MB of secondary cache. Each module contains nine MCM6709J fast static RAMs with a cache data size of 64K x 36. The tag portion, depending on the 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 with series 25 Ω resistors. The MCM6709J and MCM6706J are fabricated using high-performance silicon-gate BiCMOS technology. The static design eliminates the need for internal clocks or timing strobes. All 1MB R4000 supported secondary cache options are available. Single 5V ±10% power supply. All inputs and outputs are TTL compatible. Three-state outputs. Fast module access time: 12/15/17 ns. Zero wait-state operation. Unified or split secondary cache modules are available (see ordering information for details). Word line sizes of 4, 8, 16, and 32 are available (see ordering information for details). The pin compatible MCM44256 series is also available to support a full 4MB R4000 secondary cache. Decoupling capacitors are used for each fast static RAM and buffer, along with bulk capacitance for maximum noise immunity. High-quality multi-layer FR4 PWB with separate power and ground planes.
File format: PDF
Size: -
MD5 Checksum: 83C029B48C99075FF4A60C7598FB8401
Publication date: 08 May, 2012
Downloads: -
PDF Link: MOTOROLA MCM4464 Series handbook PDF