CY7C144-15JXI

Product Summary

The CY7C144-15JXI is a kind of high speed CMOS 8K x 8 dual-port static RAM. Various arbitration schemes are included on the CY7C144-15JXI 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 CY7C144-15JXI can be used as a standalone 64/72-Kbit 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. Application areas include interprocessor/multiprocessor designs, communications status buffering, and dual-port video/graphics memory.

Parametrics

CY7C144-15JXI absolute maximum ratings: (1)Storage temperature: -65 ℃ to +150 ℃; (2)Ambient temperature with power applied: -55 ℃ to +125 ℃; (3)Supply voltage to ground potential: -0.5 V to +7.0 V; (4)DC voltage applied to outputs in High Z state: -0.5 V to +7.0 V; (5)DC input voltage: -0.5 V to +7.0 V; (6)Output current into outputs (LOW): 20 mA; (7)Static discharge voltage: >2001 V (per MIL-STD-883, Method 3015); (8)Latch-up current: >200 mA.

Features

CY7C144-15JXI features: (1)True dual-ported memory cells that enable simultaneous reads of the same memory location; (2)8K x 8 organization (CY7C144); (3)8K x 9 organization (CY7C145); (4)0.65-micron complementary metal oxide semiconductor (CMOS) for optimum speed and power; (5)High speed access: 15 ns; (6)Low operating power: ICC = 160 mA (max.); (7)Fully asynchronous operation; (8)Automatic power-down; (9)Transistor- transistor logic (TTL) compatible; (10)Master/Slave select pin enables bus width expansion to 16/18 bits or more; (11)Busy arbitration scheme provided; (12)Semaphores included to permit software handshaking between ports; (13)INT flag for port-to-port communication; (14)Available in 68-pin plastic leaded chip carrier (PLCC), 64-pin; (15)and 80-pin thin quad plastic flatpack (TQFP); (16)Pb-free packages available.

Diagrams