XC3S400-5PQ208C

The XC3S400-5PQ208C is a Spartan®-3 Field Programmable Gate Array (FPGA) IC from AMD, offered in a 208-pin BFQFP package. It provides a balanced combination of programmable logic, on-chip memory, and I/O density for commercial-grade embedded and digital designs.

With measured resources including logic elements, CLBs, embedded RAM and a substantial I/O count, this device is intended for commercial applications that require reconfigurable digital functionality in a compact surface-mount package.

Key Features

• Core Logic 896 CLBs delivering a total of 8,064 logic elements for implementing custom digital functions and control logic.
• Embedded Memory Approximately 0.295 Mbits of on-chip RAM (294,912 bits) for data buffering, state retention and small memory structures.
• I/O and Gate Capacity 141 general-purpose I/O pins and an internal gate count of 400,000 to support multiple external interfaces and moderate-complexity designs.
• Power Core voltage supply range of 1.14 V to 1.26 V to guide power-supply design and sequencing.
• Package & Mounting 208-BFQFP (208-PQFP, 28 × 28) surface-mount package providing a compact footprint with extensive pinout for system integration.
• Operating Range & Grade Commercial grade device with an operating temperature range of 0 °C to 85 °C suitable for typical commercial environments.
• Environmental Compliance RoHS compliant to meet common environmental and regulatory requirements for electronic assemblies.

Typical Applications

• Commercial Embedded Systems — Implement custom control, glue logic, or protocol handling in commercial electronic products using the device's programmable fabric.
• Prototyping and Development — Use the FPGA for iterative design validation and functional prototyping where reconfigurability accelerates development cycles.
• I/O-Intensive Interfaces — Leverage 141 I/O pins for systems that require multiple external connections, sensor interfaces, or peripheral control.

Unique Advantages

• Moderate Logic Capacity: 8,064 logic elements and 896 CLBs provide ample resources for medium-complexity digital implementations without excessive cost or footprint.
• On-Chip RAM: Approximately 0.295 Mbits of embedded memory reduces reliance on external RAM for buffering and small data structures.
• High I/O Count: 141 I/O pins simplify external interfacing and minimize the need for additional I/O expanders.
• Compact Surface-Mount Package: The 208-BFQFP (28 × 28) package balances connectivity and PCB space for compact board designs.
• Commercial-Grade Specification: Specified for 0 °C to 85 °C operation and RoHS compliance for deployment in standard commercial environments.
• Controlled Power Requirements: Defined core voltage range (1.14 V–1.26 V) aids in predictable power-supply integration.

Why Choose XC3S400-5PQ208C?

The XC3S400-5PQ208C is positioned for designers seeking a commercial-grade, reprogrammable logic device with a balanced set of resources: thousands of logic elements, embedded RAM, and an extensive I/O count in a compact surface-mount package. Its specification set supports moderate-complexity digital designs where flexibility, integration and footprint matter.

Backed by AMD's Spartan®-3 family heritage, this FPGA offers a practical platform for development, prototyping, and deployment in commercial electronic products where predictable supply requirements and RoHS compliance are important.

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