CY7C138 CY7C1394K x 8/9 Dual-Port Static RAM with Sem, Int, Busy CY7C138 CY7C139 Features • True Dual-Ported memory cells that allow simultaneous reads of the same memory location • 4K x 8 organization (CY7C138) • 4K x 9 organization (CY7C139) • 0.
65-micron CMOS for optimum speed/power • High-speed access: 15 ns • Low operating power: ICC = 160 mA (max.
) • Fully asynchronous operation • Automatic power-down • TTL compatible • Expandable data bus to 32/36 bits or more using Master/Slave chip select when using more than one device • On-chip arbitration logic • Semaphores included to permit software handshaking between ports • INT flag for port-to-port communication • Available in 68-pin PLCC...

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