AMD XCV400-4HQ240I

Overview

XCV400-4HQ240I from Xilinx is a 2.5 V SRAM-based Field Programmable Gate Array (FPGA) with 468,252 system gates, 10,800 logic cells, and 404 maximum user I/O pins in a 240-pin High Heat Dissipation Quad Flat Pack (HQ240) package. It features four delay-locked loops (DLLs), hierarchical memory (including 81,920-bit block RAM and LUT-based RAM/shift register modes), and supports 66-MHz PCI compliance and hot-swappable Compact PCI operation.

For engineers reviewing the XCV400-4HQ240I datasheet, pinout, applications, or equivalent options, this page delivers verified architecture details, I/O banking constraints, CLB-level timing behavior, SelectIO™ standard compatibility (LVTTL, HSTL, SSTL), and industrial-temperature (-40°C to +100°C) operational validation - all critical for legacy rework, obsolescence mitigation, and high-reliability FPGA-based control system design.

Technical Context

The XCV400-4HQ240I implements a hierarchical routing architecture with a General Routing Matrix (GRM), 24 local clock nets, and four primary low-skew global clock distribution networks. Its CLBs contain dual-slice logic cells with 4-input LUTs, dedicated carry chains, F5/F6 multiplexers for 5–19 input functions, and configurable storage elements supporting synchronous/asynchronous set/reset.

I/O functionality is organized into eight independent banks, each requiring shared VCCO and single VREF voltage; compatible standards per bank include LVTTL/PCI at 3.3 V, SSTL2 at 2.5 V, and HSTL Classes I/III/IV at 1.5 V. The device uses IEEE 1149.1 boundary-scan and includes a die-temperature sensor diode.

Key Specifications

Pinout & Package

HQ240 is a 240-pin plastic quad flat pack with 0.5 mm pitch, thermally enhanced construction, and exposed die paddle for improved heat dissipation. Pin numbering follows standard counter-clockwise convention starting from pin 1 (top-left corner, marked dot).

Key Features

Applications

Equivalent & Alternatives

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

Compared with XCV400-4HQ240I, the -5 variant offers tighter timing margins for high-frequency control loops, while the XCV600-4HQ240I provides headroom for logic expansion - both retain identical thermal, mechanical, and I/O banking behavior, making them viable alternatives for obsolescence management and design refresh.

Availability

XCV400-4HQ240I is available at Aetrix Electronics and suitable for industrial motion controllers, PCI-based data acquisition systems, avionics display interfaces, and legacy system emulators requiring stable component supply amid ongoing obsolescence transitions.

Supply support for XCV400-4HQ240I 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, now part of AMD, pioneered SRAM-based FPGA architecture and delivers programmable logic solutions for high-performance computing, communications, and aerospace applications.

The Virtex family was designed for high-capacity, high-speed digital system integration - targeting applications demanding ASIC-like performance with FPGA flexibility, including protocol bridging, real-time signal processing, and hardware-accelerated control.

FAQ

What is the operating voltage requirement for XCV400-4HQ240I?

XCV400-4HQ240I requires a 2.5 V ±5% core supply (VCCINT) and bank-specific I/O supplies (VCCO) ranging from 1.5 V to 3.3 V depending on selected SelectIO™ standard. Each of the eight I/O banks must use a single VCCO voltage; mixing standards within a bank is only allowed if they share the same VCCO, such as LVTTL and PCI at 3.3 V.

Is XCV400-4HQ240I still in production?

No - XCV400-4HQ240I is officially obsolete per Xilinx documentation (DS003-1 v4.0, March 2013). However, Aetrix Electronics maintains traceable, tested inventory sourced from authorized legacy channels, with full lot traceability and burn-in validation for industrial deployment.

Does XCV400-4HQ240I support JTAG programming?

Yes, XCV400-4HQ240I fully supports IEEE 1149.1 JTAG boundary-scan via TCK, TMS, TDI, and TDO pins. This enables in-system programming, configuration bitstream loading, and post-configuration testing without requiring dedicated configuration PROMs or serial interfaces.

What memory resources does XCV400-4HQ240I provide?

XCV400-4HQ240I provides 81,920 bits of block SelectRAM (20 × 4k-bit dual-port RAMs) plus distributed memory using LUTs - each 4-LUT can be configured as 16×1 RAM, 16×2/32×1 dual-port RAM, or a 16-bit shift register. This enables flexible on-chip buffering, FIFOs, and lookup table implementations without external memory chips.

Can XCV400-4HQ240I interface directly with DDR SDRAM?

No - XCV400-4HQ240I does not natively support DDR SDRAM signaling (e.g., DQS strobe alignment, fly-by topology, or DDR-specific timing models). It supports SSTL2 Class I/II (for SDR SDRAM) and HSTL standards, but DDR interface requires external PHY or custom logic with tight timing closure - not recommended for new designs.