(China (Mainland))
Product Summary
The CY7C028V-15AI is a low-power CMOS 32K, 64K x 16/18 dual-port static RAM. Various arbitration schemes is included on the device to handle situations when multiple processor access the same piece of data. Two ports are provided, permitting independent, asynchronous access for reads and writes to any location in memory. The CY7C028V-15AI can be utilized as stand-alone 16/18-bit dual-port static RAM 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 include interprocessor/multiprocessor designs, communications status buffering, and dual-port video/graphics memory.
Parametrics
CY7C028V-15AI absolute maximum ratings: (1)Storage Temperature: –65°C to +150°C; (2)Ambient Temperature with Power Applied: –55°C to +125°C; (3)Supply Voltage to Ground Potential: –0.5V to +4.6V; (4)DC Voltage Applied to Outputs in High-Z State: –0.5V to VCC+0.5V; (5)DC Input Voltage: –0.5V to VCC+0.5V; (6)Output Current into Outputs: 20 mA; (7)Static Discharge Voltage: > 1100V; (8)Latch-up Current: > 200 mA.
Features
CY7C028V-15AI features: (1)Fully asynchronous operation; (2)Automatic power-down; (3)Expandable data bus to 32/36 bits or more using Master/; (4)Slave chip select when using more than one device; (5)On-chip arbitration logic; (6)Semaphores included to permit software handshaking between ports; (7)INT flag for port-to-port communication; (8)Separate upper-byte and lower-byte control; (9)Dual Chip Enables; (10)Pin select for Master or Slave; (11)Commercial and Industrial temperature ranges; (12)100-pin Lead(Pb)-free TQFP and 100-pin TQFP.
Diagrams
