AMD XC4036XL-3HQ208I

Overview

XC4036XL-3HQ208I from Xilinx is a Field-Programmable Gate Array (FPGA) featuring 36,000 usable gates, 208-pin HQFP package, -3 speed grade (12.5 ns CLB propagation delay), and I/O voltage support of 3.3 V with 5 V tolerance. It is used in high-speed digital logic implementation for industrial control and communications interface bridging.

For engineers reviewing the XC4036XL-3HQ208I datasheet, pinout, applications, or equivalent options, key selection criteria include gate count, I/O count (160 user I/Os), speed grade timing compliance, 3.3 V operation with 5 V-tolerant inputs, and compatibility with Xilinx Foundation Series development tools.

Technical Context

The XC4036XL-3HQ208I implements configurable logic blocks (CLBs) arranged in a symmetrical array, each containing two 3-input lookup tables (LUTs) and flip-flops with synchronous reset and clock enable. It supports distributed RAM and shift register functions within CLBs.

Configuration is performed via serial mode using an external PROM or parallel mode through the CPU interface; configuration bitstream is loaded into SRAM-based configuration memory. The device includes dedicated carry logic for high-speed arithmetic and global routing resources for low-skew clock distribution.

Key Specifications

Pinout & Package

HQFP-208 (Heat Sink Quad Flat Package) with 208 leads, 0.5 mm lead pitch, and exposed thermal pad. Package meets JEDEC MO-137AB standard and supports reflow soldering per IPC/JEDEC J-STD-020.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar FPGA logic implementation applications.

Compared with XC4036XL-3HQ208I, the XC4028XL-3HQ208I offers lower logic density at identical timing and packaging, whereas the XC4044XL-3HQ208I extends capacity without altering board layout or timing closure methodology.

Availability

XC4036XL-3HQ208I is available at Aetrix Electronics and suitable for industrial motion control, telecom line card interface, and medical imaging data acquisition requiring stable component supply across extended product lifecycles.

Supply support for XC4036XL-3HQ208I includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Xilinx, acquired by AMD in 2022, pioneered commercial FPGA technology and delivers programmable logic solutions for aerospace, industrial, and communications markets.

The XC4000XL family was designed for cost-sensitive, high-reliability applications requiring 3.3 V operation, 5 V-tolerant I/Os, and long-term obsolescence resilience in embedded systems.

FAQ

What is the maximum operating frequency supported by XC4036XL-3HQ208I?

The XC4036XL-3HQ208I has a -3 speed grade specifying 12.5 ns CLB propagation delay, enabling reliable operation up to 80 MHz for fully registered paths. Actual system frequency depends on design topology, routing congestion, and I/O timing constraints - verified using Xilinx Timing Analyzer with the XC4036XL-3HQ208I device model.

Does XC4036XL-3HQ208I require external configuration memory?

Yes, XC4036XL-3HQ208I uses SRAM-based configuration and requires external nonvolatile memory (e.g., Xilinx XC18V00 series PROM) or a host processor to load the bitstream at power-up. Configuration occurs via serial (DIN) or parallel (DATA) mode, with INIT and PROGRAM pins managing initialization sequence.

Can XC4036XL-3HQ208I interface directly with 5 V logic devices?

Yes, XC4036XL-3HQ208I features 5 V-tolerant inputs across all user I/Os, allowing direct connection to 5 V CMOS or TTL outputs without level-shifting circuitry. I/O banks are powered at 3.3 V, but input thresholds and clamping diodes support safe 5 V signal reception.

What development tools support XC4036XL-3HQ208I design entry and verification?

XC4036XL-3HQ208I is supported by Xilinx Foundation Series 2.x and 3.x software, including schematic capture, VHDL/Verilog synthesis, place-and-route, and timing simulation. Bitstream generation and configuration verification require the XC4000XL-specific device libraries and timing models included in those releases.

Is XC4036XL-3HQ208I still in active production?

No, XC4036XL-3HQ208I is obsolete per Xilinx's PCN #0106-001 (2002) and discontinued from manufacturing. Aetrix Electronics supplies remaining original-stock inventory with full traceability and extended lifecycle support documentation for legacy system maintenance and repair.