CY7C028-15AI

Product Summary

The CY7C028-15AI is a low-power CMOS 64K x 16 dual-port static RAM. Various arbitration schemes are included on the devices 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 CY7C028-15AI can be utilized as standalone 16/18-bit dual-port static RAMs or multiple devices can be combined in order to function as a 32/36-bit or wider master/slave dual-port static RAM. An M/S pin is provided for implementing 32/36-bit or wider memory applications without the need for separate master and slave devices or additional discrete logic. Application areas of the CY7C028-15AI include interprocessor/multiprocessor designs, communications status buffering, and dual port video/graphics memory.

Parametrics

CY7C028-15AI absolute maximum ratings: (1)Storage Temperature:–65℃ to +150℃; (2)Ambient Temperature with Power Applied: –55℃ to +125℃; (3)Supply Voltage to Ground Potential: –0.3V to +7.0V; (4)DC Voltage Applied to Outputs in High Z State:–0.5V to +7.0DC; (5)Input Voltage: –0.5V to +7.0V; (6)Output Current into Outputs (LOW): 20mA; (7)Static Discharge Voltage: ＞1100V; (8)Latch-Up Current: ＞200mA.

Features

CY7C028-15AI features: (1)True Dual-Ported memory cells which allow simultaneous access of the same memory location; (2)64K x 16 organization; (3)0.35-micron CMOS for optimum speed/power; (4)High-speed access: 12/15/20 ns; (5)Low operating power; (6)Automatic power-down; (7)Expandable data bus to 32/36 bits or more using Master/Slave chip select when using more than one device; (8)On-chip arbitration logic; (9)Semaphores included to permit software handshaking between ports; (10)INT flags for port-to-port communication; (11)Separate upper-byte and lower-byte control; (12)Dual Chip Enables; (13)Pin select for Master or Slave; (14)Commercial and industrial temperature ranges; (15)Available in 100-pin TQFP; (16)Pb-Free packages available.

Diagrams