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CY7C138

Cypress Semiconductor
Part Number CY7C138
Manufacturer Cypress Semiconductor
Description 4K x 8/9 Dual-Port Static RAM
Published Nov 10, 2016
Detailed Description CY7C138 CY7C1394K x 8/9 Dual-Port Static RAM with Sem, Int, Busy CY7C138 CY7C139 Features • True Dual-Ported memory ce...
Datasheet PDF File CY7C138 PDF File

CY7C138
CY7C138

Overview
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 • Pb-Free packages available Functional Description The CY7C138 and CY7C139 are high-speed CMOS 4K x 8 and 4K x 9 dual-port static RAMs.
Various arbitration schemes Logic BlockDiagram R/WL CEL OEL 4K x 8/9 Dual-Port Static RAM with Sem, Int, Busy are included on the C...


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