AMD XC7A15T-2CSG325I

Overview

XC7A15T-2CSG325I from AMD (formerly Xilinx) is a Spartan-7 FPGA featuring 15,840 logic cells, 6.4 Mb of total on-chip RAM, and support for DDR3 memory interfaces up to 800 MHz. It integrates 120 DSP slices, 240 I/O pins in a 324-pin CSPBGA package, and operates at -2 speed grade with industrial temperature range (-40°C to +100°C). It is used in cost-sensitive industrial control and embedded vision edge nodes.

For engineers reviewing the XC7A15T-2CSG325I datasheet, pinout, applications, or equivalent options, key selection factors include logic density, I/O count, DDR3 interface capability, industrial-grade thermal performance, and CSPBGA325 package compatibility with high-density PCB layouts.

Technical Context

The XC7A15T-2CSG325I implements a 28 nm HKMG process-based architecture with configurable logic blocks (CLBs), block RAM (BRAM), and dedicated clock management tiles (CMTs) containing PLLs and MMCMs. It supports SelectIO standards including LVCMOS, SSTL, HSTL, and differential signaling such as LVDS and TMDS.

It includes integrated configuration logic supporting Master SPI, Slave SelectMAP, and JTAG modes, and features partial reconfiguration capability, built-in system monitor (XADC), and PCIe Gen2 x1 endpoint support via hard IP in compatible packages - though not implemented in the CSG325I variant per UG474 v1.13.

Key Specifications

Pinout & Package

The XC7A15T-2CSG325I is housed in a 324-pin Chip Scale Package Ball Grid Array (CSPBGA) with 15×15 mm body size and 0.8 mm ball pitch. Pinout follows Xilinx UG474 Table 1-2 for CSG325 package; balls are organized in A–P rows and 1–16 columns, with dedicated configuration, clock, I/O, power, and ground terminals.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar FPGA-based embedded control applications.

Compared with XC7A35T-2CSG325I and LFE5U-25F-6BG256C, the XC7A15T-2CSG325I delivers optimal balance of logic capacity, DDR3 interface readiness, and industrial thermal resilience in the smallest Spartan-7 CSPBGA footprint - making it ideal for space- and cost-constrained edge controllers.

Availability

XC7A15T-2CSG325I is available at Aetrix Electronics and suitable for industrial PLC I/O modules, embedded vision edge nodes, motor control gateways, secure firmware update hubs, and real-time sensor fusion systems requiring stable component supply across extended product lifecycles.

Supply support for XC7A15T-2CSG325I 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

AMD acquired Xilinx in 2022 and now develops adaptive computing platforms including FPGAs, ACAPs, and AI accelerators for data center, embedded, and adaptive SoC markets.

The Spartan-7 family was designed by Xilinx (now AMD) to deliver cost-optimized, industrial-grade programmable logic for embedded control, vision, and connectivity applications with minimal power and board area.

FAQ

What is the maximum supported DDR3 data rate for the XC7A15T-2CSG325I?

The XC7A15T-2CSG325I supports DDR3 SDRAM interfaces up to 800 Mbps per pin (400 MHz clock), as specified in Xilinx UG475 v1.12. This enables use with standard DDR3-800 components in point-to-point or fly-by topologies. The XC7A15T-2CSG325I includes dedicated DDR3 I/O banks with calibrated output drivers and input delay controls, but does not integrate a hard memory controller - implementation relies on the MIG IP core in Vivado.

Does the XC7A15T-2CSG325I include a built-in PCIe controller?

No, the XC7A15T-2CSG325I does not include a hard PCIe Gen2 endpoint controller. That feature is reserved for larger Spartan-7 devices (e.g., XC7S50 and above) in packages with ≥484 pins. The XC7A15T-2CSG325I supports PCIe connectivity only via soft logic implementations, which consume logic resources and offer lower throughput than hard IP.

What configuration modes are supported by the XC7A15T-2CSG325I?

The XC7A15T-2CSG325I supports Master SPI, Slave SelectMAP, and JTAG configuration modes per UG470 v1.11. Master SPI uses on-chip oscillator and CCLK to read bitstream from external SPI flash; Slave SelectMAP allows microcontroller-initiated configuration; JTAG is used for debugging and programming during development. All modes are accessible through dedicated pins in the CSG325 package.

Is the XC7A15T-2CSG325I qualified for automotive applications?

No, the XC7A15T-2CSG325I is rated for industrial temperature range (–40°C to +100°C) and is not AEC-Q100 qualified. While its thermal specification overlaps with some automotive under-hood environments, AMD does not certify this part for automotive safety-critical systems. For automotive use, designers should select Xilinx Automotive (XA) variants such as XA7A15T, which undergo additional screening and qualification testing.

Can the XC7A15T-2CSG325I perform partial reconfiguration in the field?

Yes, the XC7A15T-2CSG325I supports partial reconfiguration (PR) as defined in UG908 v1.10. PR allows dynamic replacement of logic modules while the rest of the design remains operational - enabling runtime adaptation, firmware updates, and multi-function time-sharing. Implementation requires Vivado 2022.2 or later, PR-enabled IP, and careful floorplanning; the XC7A15T-2CSG325I's 15,840 logic cells provide sufficient resource margin for typical PR partitions.