AMD XC3195-3PQ208C

Overview

XC3195-3PQ208C from Xilinx is a high-density, static-memory-based Field Programmable Gate Array (FPGA) with 7,500 usable logic gates, 484 Configurable Logic Blocks (22 × 22 array), 176 user I/Os, and guaranteed 370 MHz flip-flop toggle rate. It implements synchronous digital logic via programmable CLBs, IOBs, and interconnect resources, and was used in legacy telecom interface controllers and industrial motion control subsystems.

For engineers reviewing the XC3195-3PQ208C datasheet, pinout, applications, or equivalent options, key selection criteria include its 3.3 V nominal supply, PQ208 ceramic pin-grid-array package, Soft Startup slew-rate limiting, bitstream compatibility with XC3000A/XC3100A families, and support for TTL/CMOS input thresholds.

Technical Context

The XC3195-3PQ208C implements a regular, extendable architecture comprising a perimeter of programmable Input/Output Blocks (IOBs), a core array of 484 Configurable Logic Blocks (CLBs), and hierarchical interconnect resources including general-purpose metal grids, direct CLB-to-CLB paths, and horizontal longlines. Each CLB contains dual 4-input LUTs, two edge-triggered flip-flops, and programmable clock/enable/reset controls.

Configuration is stored in internal static memory cells loaded at power-up from external serial PROM (e.g., XC17XX series) or parallel ROM/EEPROM. The device supports automatic configuration with error-checking of bitstream stop bits and Soft Startup - a hardware-enforced slew-rate limit on all outputs during initial power-up to suppress ground bounce.

Key Specifications

Pinout & Package

Ceramic Pin-Grid-Array (CPGA) package, 208-pin, 1.27 mm pitch, 27.94 mm × 27.94 mm body size, JEDEC standard PQ208 footprint. Compatible with socketed or soldered mounting in high-reliability industrial environments.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar FPGA-based digital logic integration applications.

Compared with XC3195-3PQ208C, XC3195A-3PQ208C requires external level shifters in 3.3 V systems and draws more quiescent current, while XCV300-4PQ240C offers vastly greater density and integrated features but demands updated toolchain and PCB layout - making XC3195-3PQ208C optimal for cost-sensitive, pin-compatible replacements in fielded 3.3 V industrial systems.

Availability

XC3195-3PQ208C is available at Aetrix Electronics and suitable for legacy telecom infrastructure upgrades, industrial motion controller refurbishment, and medical imaging service spares requiring stable component supply over extended product lifecycles.

Supply support for XC3195-3PQ208C 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, founded in 1984, pioneered commercial FPGA technology and developed the XC3000 series as its first widely adopted programmable logic platform for high-reliability embedded systems.

The XC3000 Series - including XC3195-3PQ208C - was designed for high-density, reprogrammable digital logic replacement of TTL/MSI and ASICs in telecom, industrial control, and instrumentation applications where design iteration and NRE avoidance were critical.

FAQ

What is the operating voltage range for XC3195-3PQ208C?

The XC3195-3PQ208C operates at a nominal 3.3 V supply with a specified range of 3.0 V to 3.6 V. This low-voltage design reduces active and quiescent power versus 5 V XC3195A variants, and matches modern 3.3 V system rails without level translation. Its I/O buffers are compatible with both TTL and CMOS logic thresholds, and the device draws ≤5 mA in power-down mode.

Is XC3195-3PQ208C pin-compatible with other XC3000-series FPGAs?

Yes, XC3195-3PQ208C is 100% pin-out compatible with the XC3000A, XC3000L, and XC3100A families in the same PQ208 package. All share identical I/O placement, power/ground pin assignments, and configuration interface signals (CCLK, INIT, PROGRAM). This allows drop-in replacement in existing PCBs designed for XC3195A-3PQ208C or XC3090L-3PQ208C, provided voltage and timing margins are verified.

Does XC3195-3PQ208C support in-system reprogramming?

Yes, XC3195-3PQ208C supports in-system reprogramming via its serial configuration interface using CCLK and DIN. The device can reload its configuration bitstream from an external XC17XX-series PROM or microcontroller-driven SPI-like sequence without power cycling. Soft Startup remains active on each reconfiguration, ensuring controlled output activation even after dynamic logic updates.

What development tools were originally used for XC3195-3PQ208C?

Xilinx Foundation Series and M1 software suites were the primary development environments for XC3195-3PQ208C, supporting schematic capture, automatic place-and-route, timing simulation, and bitstream generation. These tools interfaced with third-party EDA platforms including Viewlogic, Cadence, and Mentor Graphics. While modern Vivado does not support XC3000-series devices, archived versions of Foundation F1.5 and M1.5 remain functional under Windows XP virtual machines for legacy maintenance.

How many configuration memory bits does XC3195-3PQ208C require?

The XC3195-3PQ208C requires exactly 94,984 configuration bits to define its internal logic functions, interconnect routing, and I/O attributes. This value is fixed per device architecture and corresponds to the distributed static memory cell array controlling CLB logic, IOB settings, and PIP connections. Bitstreams generated for XC3195-3PQ208C are not interchangeable with smaller XC3000-series devices due to differing memory map sizes.