M5M5Y5636TG-20

2001.June Rev.0.0 MITSUBISHI LSIs Advanced Information Notice: This is not final specification. Some parametric limits are subject to change. M5M5Y5636TG – 25,22,20 18874368-BIT(524288-WORD BY 36-BIT) NETWORK SRAM DESCRIPTION The M5M5Y5636TG is a family of 18M bit synchronous SRAMs organized as 524288-words by 36-bit. It is designed to eliminate dead bus cycles when turning the bus around between reads and writes, or writes and reads. Mitsubishi's SRAMs are fabricated with high performance, low power CMOS technology, providing greater reliability. M5M5Y5636TG operates on a single 1.8V power supply and are 1.8V CMOS compatible. FUNCTION 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#), Echo Clock outputs (CQ1, CQ1#, CQ2, CQ2#) and Read/Write (W#). Write operations are controlled by the eight Byte Write Enables (BWa# - BWd#) 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 multidrop bus application and low drive ...