Field programmable gate arrays. Vcc = 3.0V to 3.6V. The **XC4085XLA-09HQ304C** is a Field Programmable Gate Array (FPGA) manufactured by **Xilinx**. Below are the key specifications, descriptions, and features based on available data:
### **Specifications:**
- **Manufacturer:** Xilinx
- **Family:** XC4000
- **Series:** XC4000A
- **Part Number:** XC4085XLA-09HQ304C
- **Package:** HQ304 (304-pin Ceramic Quad Flat Pack)
- **Speed Grade:** -09 (9 ns maximum pin-to-pin delay)
- **Logic Cells/Gates:** ~85,000 gates (varies based on configuration)
- **Operating Voltage:** 5V (TTL-compatible)
- **I/O Standards:** 5V TTL/CMOS
- **Operating Temperature:** Commercial (0°C to +85°C)
### **Descriptions:**
- The **XC4000A** series is an older FPGA family from Xilinx, designed for high-performance, high-density programmable logic applications.
- The **XC4085XLA-09HQ304C** is a high-capacity FPGA with configurable logic blocks (CLBs), I/O blocks (IOBs), and programmable interconnects.
- It supports **SRAM-based configuration**, meaning it must be reprogrammed upon power-up.
- Suitable for **prototyping, digital signal processing (DSP), and embedded systems** in industrial and commercial applications.
### **Features:**
- **High Logic Density:** ~85K gates for complex digital designs.
- **Flexible I/O:** Supports multiple 5V-compatible interfaces.
- **On-Chip Memory:** Distributed RAM for small data storage.
- **Reconfigurable:** In-system programmable via external PROM or microcontroller.
- **High-Speed Operation:** 9 ns speed grade for moderate performance needs.
- **Ceramic Package (HQ304):** Durable packaging for industrial environments.
This FPGA is **obsolete** (no longer in production) but may still be found in legacy systems. For modern alternatives, consider Xilinx’s **Spartan or Virtex** series.
(Note: Exact gate count and features may vary slightly based on configuration.)
