Description
Cypress Semiconductor CY7C138-55J Multi-Port Static RAM 4K x 8/9 Dual-Port Static RAM – Asynchronous
Cypress Semiconductor
Multi-Port Static RAM – Asynchronous
Number of Words=4k
Bits Per Word=8
t(acc) Max. (S)=55n
tW Min (S)=55n
Output Config=3-State
Nom. Supp (V)=5
Package=QCC-J
Pins=68
Military=N
Technology=CMOS
are included on the CY7C138/9 to handle situations when multiple processors access the same piece of data. Two ports are provided permitting independent, asynchronous access for reads and writes to any location in memory. The CY7C138/9 can be utilized as a standalone 8/9-bit dual-port static RAM or multiple devices can be combined in order to function as a 16/18-bit or wider master/slave dual-port static RAM. An M/S pin is provided for implementing 16/18-bit or wider memory applications without the need for separate master and slave devices or additional discrete logic. Appli- cation areas include interpro cessor/multiprocessor designs, communications status buffering, and dual-port video/graphics memory
Manufacturer:Cypress
Datasheet:CY7C138-15JXC-Cypress-Semiconductor.pdf
