HIGH-SPEED 2K x 8 DUAL-PORT STATIC RAM WITH INTERRUPTS The **IDT71321-LA55J** is a high-speed 16K x 16 dual-port static RAM (SRAM) manufactured by Integrated Device Technology (IDT). Below are its key specifications, descriptions, and features:
### **Specifications:**
- **Memory Size:** 16K x 16 (262,144 bits)
- **Organization:** Dual-port (allows simultaneous access from both ports)
- **Supply Voltage:** 5V ±10%
- **Access Time:** 55 ns
- **Operating Temperature Range:** Commercial (0°C to +70°C)
- **Package:** 48-lead PLCC (Plastic Leaded Chip Carrier)
- **Power Consumption:**
- Active: 1,100 mW (typical)
- Standby: 55 mW (typical)
### **Descriptions:**
- The **IDT71321-LA55J** is a dual-port SRAM designed for applications requiring high-speed data sharing between two processors.
- It features independent control, address, and I/O pins for each port, enabling simultaneous read/write operations.
- Includes built-in arbitration logic to prevent data corruption during simultaneous access to the same memory location.
### **Features:**
- **True Dual-Port Operation:** Allows independent, simultaneous access from both ports.
- **Busy Output (BUSY):** Prevents contention during simultaneous write operations to the same address.
- **Interrupt Flag (INT):** Supports mailbox communication between processors.
- **Semaphore (SEM) Control:** Enables hardware-assisted shared-resource management.
- **TTL-Compatible Inputs/Outputs:** Ensures compatibility with standard logic levels.
- **Low-Power Standby Mode:** Reduces power consumption when inactive.
- **Industrial-Grade Options Available:** (Note: The **-LA55J** variant is commercial-grade.)
This device is commonly used in multiprocessor systems, communication buffers, and data-sharing applications.
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