AMD XC95108-20PQ100C

Overview

XC95108-20PQ100C from AMD (acquired Xilinx CPLD business) is a 108-macrocell in-system programmable CPLD with 20 ns maximum pin-to-pin delay, 100-pin PQFP package, and 5 V supply operation. It serves as a glue logic replacement in legacy industrial control and telecom interface boards requiring deterministic timing and non-volatile configuration.

For engineers reviewing the XC95108-20PQ100C datasheet, pinout, applications, or equivalent options, key selection factors include propagation delay budget, I/O count for board-level signal routing, supply voltage compatibility with 5 V TTL/CMOS systems, and JTAG-based in-system reprogrammability for field updates.

Technical Context

This device belongs to the XC9500 family of high-performance CPLDs built on 0.5 µm CMOS technology. It integrates three function blocks interconnected via a global routing pool, each supporting up to 36 macrocells with product-term-based logic and configurable output polarity.

The architecture supports synchronous and asynchronous reset/set, clock enable, and individual macrocell power-down modes. Configuration is stored in on-chip EEPROM, enabling instant-on operation without external configuration memory.

Key Specifications

Pinout & Package

XC95108-20PQ100C uses a 100-lead Plastic Quad Flat Pack (PQFP) with 0.65 mm lead pitch, 14 mm × 20 mm body size, and exposed thermal pad (non-electrical). Pin assignment follows standard XC9500 family layout with dedicated JTAG TDI/TDO/TMS/TCK, GTS/GCLK pins, and dual-purpose I/Os.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar CPLD-based glue logic applications.

Compared with XC95108-20PQ100C, the XC95144-15PQ100C offers 33% more macrocells and 5 ns faster delay in identical packaging, while the XCR3128XL-10VQ100C shifts to 3.3 V operation with improved power efficiency but necessitates voltage translation in legacy 5 V environments.

Availability

XC95108-20PQ100C is available at Aetrix Electronics and suitable for industrial control, telecom infrastructure, and avionics maintenance equipment requiring stable component supply and long-term obsolescence management.

Supply support for XC95108-20PQ100C 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, integrating its programmable logic portfolio including the legacy XC9500 CPLD family originally developed by Xilinx.

The XC9500 family was designed for high-reliability, non-volatile, in-system programmable logic replacement in 5 V industrial and telecom systems where EEPROM-based instant-on operation and deterministic timing were critical.

FAQ

What is the operating voltage range for XC95108-20PQ100C?

The XC95108-20PQ100C operates at a nominal supply voltage of 5.0 V with a tolerance of ±10%, meaning it functions reliably from 4.5 V to 5.5 V. This range ensures compatibility with standard 5 V TTL and CMOS logic families commonly found in legacy industrial and telecom equipment. The XC95108-20PQ100C does not support 3.3 V or mixed-voltage operation.

Does XC95108-20PQ100C support in-system programming?

Yes, XC95108-20PQ100C supports IEEE 1149.1 JTAG-compliant in-system programming (ISP), allowing full configuration bitstream loading and reprogramming while soldered on the target board. This capability eliminates the need for UV erasers or socket-based programmers. The XC95108-20PQ100C retains its configuration in on-chip EEPROM after power removal.

How many I/O pins does XC95108-20PQ100C provide?

XC95108-20PQ100C provides 84 user-programmable I/O pins in its 100-pin PQFP package. All I/Os support Schmitt-trigger inputs, programmable slew rate control, and individual output enable. Two pins are dedicated to JTAG boundary-scan, and four are reserved for global clock and three-state control functions.

Is XC95108-20PQ100C pin-compatible with other XC9500 family devices?

XC95108-20PQ100C shares the same 100-pin PQFP footprint and pinout with other XC9500 devices in the PQ100 package, including XC9572-10PQ100C and XC95144-15PQ100C. Signal assignments for I/O, JTAG, GCLK, and GTS pins are consistent across this package variant, enabling drop-in upgrades where logic density and timing allow.

What is the maximum clock frequency supported by XC95108-20PQ100C?

The maximum system clock frequency for XC95108-20PQ100C is 55.6 MHz, calculated from its 20 ns worst-case pin-to-pin propagation delay. This applies to synchronous logic paths using global clocks. Registered outputs achieve this timing under standard loading conditions; actual achievable frequency depends on logic depth and routing congestion in the implemented design.