XC7A100T-1CSG324C is an SRAM-based Artix-7 FPGA with 101,440 logic cells. Its CSG324 package exposes 210 HR user I/O and no GTP transceiver channels. That package restriction is essential when checking an existing BOM or choosing an interface: the family’s maximum transceiver count is not available on every package.
Verified specifications for the exact ordering code
| Attribute | XC7A100T-1CSG324C | Interpretation |
|---|---|---|
| Logic | 15,850 slices; 63,400 LUTs; 126,800 flip-flops | 15,850 is the slice count, not the LUT count. |
| Arithmetic | 240 DSP48E1 slices | Each includes a 25 × 18 multiplier; implementation determines throughput. |
| Block RAM | 135 × 36 Kb blocks; 4,860 Kb total | Memory modes and allocation affect usable buffer capacity. |
| Clock management | Six CMTs, each with one MMCM and one PLL | Clock rates and routing still need device- and grade-specific checks. |
| User I/O | Up to 210 HR I/O in CSG324 | Artix-7 user banks are HR, not a mixture of HR and HP. |
| GTP channels | 0 in CSG324 | Do not promise native PCIe or another GTP-based link on this package. |
| Mechanical | 324-ball wire-bond chip-scale BGA; 15 × 15 mm; 0.8 mm pitch | Not 19 × 19 mm, 1.0 mm pitch or a central exposed-pad package. |
| Speed and temperature | -1 speed grade; C commercial junction range 0°C to 85°C | Speed and temperature are different fields; ambient limits depend on self-heating. |
Manufacturer references: DS180: 7 Series overview, Artix-7 resource and package tables; DS181: Artix-7 electrical limits and power sequencing; UG475: package drawings and migration rules.
What the missing GTP channels mean
DS180 lists device resources separately from device/package connections. Although XC7A100T has GTP resources in other packages, its CSG324 row lists zero. An integrated PCIe block in the device-level feature table does not supply the missing physical transceiver pins. A native PCIe Gen 2 x 4 endpoint, GTP Aurora link or GTP IBERT test is therefore not a valid promise for this ordering code.
SelectIO serial interfaces are a different resource and have their own electrical, timing and IP requirements. They are not universal replacements for GTP. For example, AMD’s documented Artix-7 LVDS implementation of the PG047 PCS/PMA requires -2 or faster; do not assume it provides an SGMII workaround for this -1 part.
Manufacturer references: DS180: 7 Series overview, Artix-7 resource and package tables; PG047: LVDS PCS/PMA device and speed-grade requirements.
Decode and verify the complete part number
XC7A100T identifies the FPGA device; -1 its speed grade; CSG324 its package; and the final C its temperature option. Retain the entire code when requesting a quote or reviewing a substitute. The -1 field does not itself mean commercial temperature, and a faster speed grade is not a guarantee of either greater or lower static power.
Confirm candidate order codes against manufacturer ordering information. A smaller device, another speed/temperature option or a low-power grade needs a technical review of resources, pinout, supply requirements, timing and configuration before being approved.
Power and I/O specifications
For the standard -1 device, DS181 gives VCCINT and VCCBRAM as 1.0 V nominal with a 0.95–1.05 V operating range, and VCCAUX as 1.8 V nominal with a 1.71–1.89 V range. Select each VCCO from the requirements of the bank’s actual I/O standards. A supported nominal bank voltage does not mean every signaling standard works at that voltage.
Use DS181 for startup current and rail-ramp constraints, and UG483 for the power-distribution design. Include configuration bank 0, CFGBVS and configuration-device voltage in the review. Do not create a GTP power circuit by copying another package’s schematic.
Manufacturer references: DS181: Artix-7 electrical limits and power sequencing; UG471: SelectIO standards, banks and termination; UG470: configuration modes, status pins and IDCODE; UG483: 7 Series PCB and power-distribution design.
Configuration memory and software
The FPGA loses its configuration when power is removed. External configuration flash is one way to reload it; a host-driven or JTAG configuration flow is another, so onboard flash is not universally mandatory. For a standalone SPI design, select a supported flash and plan the mode, bus width, voltage and image layout.
UG470 lists a 30,606,304-bit configuration length and a 32 Mb minimum flash size for 7A100T. That is a baseline for a configuration image, not a complete flash-sizing decision: reserve capacity for the actual format, fallback images, software or other data. Validate the specific flash and programming flow rather than assuming any 128 Mb or 256 Mb device works.
Manufacturer references: UG470: configuration modes, status pins and IDCODE.
From resource totals to a feasible application
A streaming image filter, data-acquisition pipeline or soft processor may be a useful application, but fit and speed require an implemented design. Count LUTs, registers, DSPs, memory, clocking and bank-compatible pins together. Check the selected external memory and peripheral interfaces in the tools before releasing a PCB.
For pricing and lifecycle decisions, distinguish technical documentation from current commercial evidence. This guide does not assert live inventory, a fixed unit price or a guaranteed production lifetime. Request the exact code, lot/packaging details and delivery requirements in a written quotation.
Related engineering tasks
- Board design-in and configuration planning
- Machine-vision pipeline planning
- Configuration, JTAG, I/O and thermal troubleshooting
- Eight-channel acquisition and FFT budgeting
- Replacement and migration approval
For sourcing, provide the full ordering code, quantity, required date and document requirements through Request a quotation. Availability, price, delivery and other commercial terms are confirmed in each written quotation.
Technical review: 8 October 2026, based on the linked manufacturer documents. Worked calculations are planning examples; this guide does not report a WWDParts hardware test.