M5M5Y5672TG-22

2001.May Rev.0.1 MITSUBISHI LSIs Advanced Information Notice: This is not final specification. Some parametric limits are subject to change. M5M5Y5672TG – 25,22,20 18874368-BIT(262144-WORD BY 72-BIT) NETWORK SRAM Synchronous circuitry allows for precise cycle control triggered by a positive edge clock transition. Synchronous signals include : all Addresses, all Data Inputs, all Chip Enables (E1#, E2, E3), Address Advance/Load (ADV), Byte Write Enables (BWa#, BWb#, BWc#, BWd#, BWe#, BWf#, BWg#, BWh#), Echo Clock outputs (CQ1, CQ1#, CQ2, CQ2#) and Read/Write (W#). Write operations are controlled by the eight Byte Write Enables (BWa# - BWh#) and Read/Write(W#) inputs. All writes are conducted with on-chip synchronous self-timed write circuitry. The Echo Clocks are delayed copies of the RAM clock, CLK. Echo Clocks are designed to track changes in output driver delays due to variance in die temperature and supply voltage. The ZQ pin supplied with selectable impedance drivers, allows selection between nominal drive strength (ZQ LOW) for multi-drop bus application and low drive strength (ZQ floating or HIGH) point-to-point applications. The sense of two User-Programmable Chip Enable inputs (E2, E3), whether they function as active LOW or active HIGH inputs, is determined by the state of the programming inputs, EP2 and EP3. The Linear Burst order (LBO#) is DC operated pin. LBO# pin will allow the choice of either an interleaved burst, or a linear burst. All read, write and deselec...