In-System Programmable 3.3V SuperWIDE? High Density PLD The **ISPLSI5256VA** is a high-density programmable logic device (PLD) manufactured by **Lattice Semiconductor**. Below are its key specifications, descriptions, and features:
### **Specifications:**
- **Device Type**: High-performance E²CMOS® In-System Programmable Large Scale Integration (ISPLSI) device.
- **Density**: 256 macrocells.
- **Gates**: Approximately 6,000 PLD gates.
- **Speed**: 5 ns pin-to-pin logic delays (max).
- **Operating Voltage**: 5V (±10%).
- **I/O Pins**: Up to 192 (depending on package).
- **Package Options**:
- 208-pin PQFP (Plastic Quad Flat Pack).
- 256-pin BGA (Ball Grid Array).
- **Operating Temperature**:
- Commercial (0°C to +70°C).
- Industrial (-40°C to +85°C).
### **Descriptions:**
- **Architecture**: Combines a programmable logic array with high-speed global routing.
- **Macrocell Structure**: Each macrocell includes a programmable AND/OR array and a register with flexible clocking options.
- **In-System Programmability (ISP)**: Supports reprogramming via IEEE 1149.1 (JTAG) interface.
- **On-Chip Memory**: Includes dedicated input registers and buried registers for efficient state machine implementation.
### **Features:**
- **High Performance**: 5 ns maximum propagation delay.
- **Flexible I/O**: 5V TTL-compatible inputs and outputs.
- **Programmable Output Slew Rate**: Reduces switching noise.
- **Security Fuse**: Prevents unauthorized copying of the design.
- **Power Management**: Low-power standby mode.
- **JTAG Boundary Scan**: Supports board-level testing.
This device is suitable for high-speed logic integration in applications such as telecommunications, networking, and industrial control systems.
(Note: For exact pin configurations and timing diagrams, refer to the official **Lattice datasheet**.)
