AMD XC4028XLA-09HQ160C

Overview

XC4028XLA-09HQ160C from Xilinx is a high-capacity, 3.3 V Field-Programmable Gate Array (FPGA) featuring 2,432 configurable logic blocks (CLBs), 28,000 typical system gates, 32,768 RAM bits, and 256 user I/Os in a 160-pin HQFP package. It supports synchronous system clock rates up to 80 MHz, includes edge-triggered and dual-port SelectRAM™ memory per CLB, and delivers PCI-compliant timing for -2 and faster speed grades.

For engineers reviewing the XC4028XLA-09HQ160C datasheet, pinout, applications, or equivalent options, key selection criteria include its 0.35 µm SRAM process, 3.3 V core voltage with 5 V-tolerant I/Os, programmable slew rate and pull-up/pull-down resistors, and compatibility with Master Parallel and Slave Serial configuration modes.

Technical Context

The XC4028XLA-09HQ160C belongs to the XC4000XLA family - a low-voltage, high-performance variant of the XC4000X series built on 0.35 µm SRAM technology. It implements a hierarchical interconnect architecture with eight global low-skew clock networks, dedicated carry logic, and wide edge decoders around the device perimeter.

Each CLB integrates two 4-input function generators (F and G), a third H-function generator with three inputs, dual edge-triggered D-type flip-flops (or latches in XC4000X), and configurable RAM modes (16x2, 32x1, or 16x1 dual-port). IOBs support individually programmable output slew rate, input threshold selection (1.6 V compatible with 3.3 V CMOS/TTL), and IOB clock enable functionality.

Key Specifications

Pinout & Package

XC4028XLA-09HQ160C is housed in a 160-pin Heat Sink Quad Flat Package (HQFP) with 20 × 20 mm body size, 0.5 mm pitch, and exposed thermal pad. Pin assignments follow Xilinx's standard XC4000XLA IOB layout, supporting single-ended signaling and global clock distribution across eight dedicated networks.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC4028XLA-09HQ160C, XC4028XL-09HQ160C offers identical pinout and basic functionality at higher static power, while XCV300E-09HQ240C provides architectural evolution with greater density and memory bandwidth-but demands full toolchain migration and layout revision.

Availability

XC4028XLA-09HQ160C is available at Aetrix Electronics and suitable for industrial motion control, PCI-based instrumentation, high-speed data acquisition, and reconfigurable protocol stack applications requiring stable component supply across extended product lifecycles.

Supply support for XC4028XLA-09HQ160C 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 commercial FPGA technology and developed the XC4000 family as the industry's first high-density, SRAM-based programmable logic platform.

The XC4000XLA product line was engineered specifically for low-voltage, high-reliability embedded systems requiring PCI compliance, deterministic timing, and long-term obsolescence management - targeting industrial automation and test equipment markets.

FAQ

What is the maximum operating frequency supported by XC4028XLA-09HQ160C?

The XC4028XLA-09HQ160C supports synchronous system clock rates up to 80 MHz and achieves internal performance exceeding 150 MHz. This is enabled by its 0.35 µm SRAM process, optimized carry logic, and eight low-skew global clock networks. The -09 speed grade guarantees timing closure at 80 MHz for PCI-compliant designs, with actual achievable frequency dependent on routing density and logic depth in the implemented design. XC4028XLA-09HQ160C maintains this performance while operating at 3.3 V core voltage.

Does XC4028XLA-09HQ160C support dual-port RAM functionality?

Yes, XC4028XLA-09HQ160C supports dual-port RAM mode in every CLB. Each CLB can be configured as a 16x1 dual-port RAM with independent read and write ports, enabling simultaneous read and write operations to the same or different addresses. This capability is implemented using the F and G function generators and is fully synchronous with the CLB clock. XC4028XLA-09HQ160C uses this feature to accelerate FIFO and buffer applications without external memory components.

Is XC4028XLA-09HQ160C pin-compatible with other XC4000X devices?

XC4028XLA-09HQ160C is pinout-compatible with XC4028EX and XC4028XL devices in the same 160-pin HQFP package. However, it is not bitstream-compatible due to architectural differences in the XLA family's low-power routing and configuration logic. Pin assignments for global clocks, JTAG, configuration, and I/O banks remain consistent across these variants, allowing PCB reuse when migrating between speed grades or voltage families. XC4028XLA-09HQ160C retains identical mechanical and electrical I/O footprint as its EX/XL counterparts.

What configuration modes does XC4028XLA-09HQ160C support?

XC4028XLA-09HQ160C supports Master Parallel, Slave Serial, and peripheral configuration modes. Master Parallel mode uses 22-bit addressing for large PROMs, while Slave Serial relies on a single-bit serial stream from an external PROM or microcontroller. Configuration is initiated by the PROGRAM pin and verified via DONE and INIT status signals. XC4028XLA-09HQ160C also supports IEEE 1149.1 boundary scan for in-system programming and debug, making it suitable for field-upgradable embedded systems.

How does the SelectRAM™ memory in XC4028XLA-09HQ160C differ from standard FPGA RAM?

XC4028XLA-09HQ160C's SelectRAM™ memory provides true synchronous, edge-triggered write operation with configurable read/write porting - a feature absent in earlier FPGA families. Unlike asynchronous RAM, SelectRAM™ eliminates timing uncertainty during writes and enables precise clock-domain crossing. Each CLB supports 16x2, 32x1, or 16x1 dual-port configurations, and content loads at configuration time for known startup state. XC4028XLA-09HQ160C leverages this for deterministic initialization in safety-critical applications.