AMD / Xilinx / TECHNICAL REFERENCE

XC3SD1800A

Spartan-3A DSP base device for legacy design maintenance, with DSP48A arithmetic slices. Package, speed and temperature suffixes are required to identify an orderable part.

FPGA.io Part Number FIO-6A30CBDF1A904347Internal catalogue reference · manufacturer MPN remains unchanged

Technical reference · Base device — ordering suffix not specified · Checked 2026-09-28

Request sourcing review ↗View documented parameters ↓

XC3SD1800A — technical feature overview — Technical schematicFPGA.io technical schematic for XC3SD1800A. Values summarize the documented fields below; consult their source conditions. This is an abstract diagram, not a product photograph, package drawing or pinout. Parameter sources below ↓

DOCUMENTED FACTS

Technical parameters

7 source-linked fields

Values apply to the device and conditions identified in each source. Family maxima, package limits and full ordering-code specifications must not be treated as interchangeable.

Parameter	Documented value	Source & conditions
Equivalent logic cells	37440 cells	Spartan-3A DSP FPGA Family Data Sheet, v3.0 (2010-10-04) ↗Table 1, p. 2, XC3SD1800A row
Configurable logic blocks	4160 CLBs	Spartan-3A DSP FPGA Family Data Sheet, v3.0 (2010-10-04) ↗Table 1, p. 2, XC3SD1800A row
Block RAM	1512 Kbit (1024 bits)	Spartan-3A DSP FPGA Family Data Sheet, v3.0 (2010-10-04) ↗Table 1, p. 2, XC3SD1800A row
Distributed RAM	260 Kbit (1024 bits)	Spartan-3A DSP FPGA Family Data Sheet, v3.0 (2010-10-04) ↗Table 1, p. 2, XC3SD1800A row
Digital clock managers	8 DCMs	Spartan-3A DSP FPGA Family Data Sheet, v3.0 (2010-10-04) ↗Table 1, p. 2, XC3SD1800A row
Maximum user I/O	519 pins	Spartan-3A DSP FPGA Family Data Sheet, v3.0 (2010-10-04) ↗Table 1, p. 2, XC3SD1800A row; device maximum; actual count depends on package
DSP48A slices	84 slices	Spartan-3A DSP FPGA Family Data Sheet, v3.0 (2010-10-04) ↗Table 1, p. 2, XC3SD1800A row

Official documents

Spartan-3A DSP FPGA Family Data Sheet, v3.0 (2010-10-04)Table 1, p. 2; Architectural Overview, p. 3PDF ↗Legacy FPGA and CPLD Product Discontinuation Notice, v1.1 (2024-01-29)Scope, p. 1; Table 3, p. 2; Table 5, pp. 3-5; final-order and final-delivery dates, p. 5PDF ↗

Ordering and board constraints

This reference identifies a base device. Package, speed grade, temperature, qualification and packing suffixes have not been inferred.

Map DSP48A pre-add, multiply and accumulate stages explicitly before porting DSP logic.
Budget block RAM and package I/O independently; larger logic capacity does not guarantee more I/O.
Confirm current availability and lifecycle for the complete code before procurement.
Review pinout, electrical conditions and the exact document revision before PCB release.

Prepare a complete request

Include the full ordering code, quantity, delivery requirement and traceability needs. For an assembled board, include BOM revision, programming and test scope.

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Series & categories

Legacy Spartan selection and lifecycle guide →Spartan-3A DSP →

COMPLETE PART IDENTITIES

Ordering numbers for XC3SD1800A

1 documented code

These references belong to this device. Evidence labels distinguish reviewed specifications, public listings and manufacturer coding examples. Counts describe this site’s documented coverage, not stock or all configurations offered by the manufacturer.

Full ordering number	Package	Speed / temperature	Evidence	Next step
XC3SD1800A-4CSG484I	Not verified	Not verifiedNot verified	Distributor-listed identityView source ↗	Device details →Request quotation

1 of 1 codes shown

Not verified means that parameter has not been independently established for this exact code. A code example is not confirmation that a configuration can be ordered today.