AMD XC2C256-7PQ208C

Overview

XC2C256-7PQ208C from AMD (formerly Xilinx) is a CoolRunner-II CPLD featuring 256 macrocells, 176 user I/O pins, 7.5 ns pin-to-pin delay, and operation up to 125 MHz. It implements combinational and registered logic in low-power, non-volatile architecture for glue logic replacement in industrial control and communications interfaces.

For engineers reviewing the XC2C256-7PQ208C datasheet, pinout, applications, or equivalent options, key selection criteria include propagation delay, I/O count, supply voltage tolerance, JTAG programming support, and in-system programmability for field updates.

Technical Context

The XC2C256-7PQ208C uses a fully decoded product-term architecture with function generators, macrocells, and global routing resources. It supports IEEE 1149.1 JTAG boundary-scan testing and in-system programming via JTAG or ISP pins.

Its non-volatile Flash-based configuration retains logic state without external memory. The device operates from a single 1.8 V core supply and supports mixed-voltage I/O banks (1.8 V, 2.5 V, 3.3 V) with programmable slew rate and drive strength per bank.

Key Specifications

Pinout & Package

XC2C256-7PQ208C is housed in a 208-pin PQFP (Plastic Quad Flat Package) with 0.5 mm pitch, 28 × 28 mm body size, and standard JEDEC MO-137AC footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XCR3256XL-7TQ144I and LC4256ZE-7TN144C, the XC2C256-7PQ208C provides 32+ additional I/O pins, four independent I/O voltage banks, and JEDEC-standard PQFP-208 packaging-enabling denser, lower-power, and more interoperable interface consolidation without board redesign.

Availability

XC2C256-7PQ208C is available at Aetrix Electronics and suitable for industrial automation, optical module control, and automated test equipment requiring stable component supply and long-term lifecycle support.

Supply support for XC2C256-7PQ208C 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 is a global semiconductor leader delivering adaptive computing solutions, including FPGA, CPLD, and SoC technologies for data center, embedded, and edge applications.

The CoolRunner-II family was designed for low-power, non-volatile programmable logic in space- and power-constrained industrial and communications systems where instant-on operation and field reprogrammability are critical.

FAQ

What is the maximum operating frequency supported by XC2C256-7PQ208C?

The XC2C256-7PQ208C supports a maximum system clock frequency of 125 MHz, verified under worst-case conditions with 7.5 ns pin-to-pin propagation delay. This timing performance applies to registered logic paths with proper constraints applied in Xilinx ISE software. The XC2C256-7PQ208C achieves this speed while maintaining full functionality across its 256 macrocells and 176 I/O pins.

Does XC2C256-7PQ208C require an external configuration memory?

No, the XC2C256-7PQ208C integrates non-volatile Flash configuration memory and powers up fully operational without external PROM or configuration devices. Its on-chip Flash retains logic definitions across power cycles, eliminating boot delay and reducing BOM cost. The XC2C256-7PQ208C supports in-system programming via JTAG, allowing field updates without hardware modification.

Can XC2C256-7PQ208C interface with both 3.3 V and 1.8 V peripherals simultaneously?

Yes, the XC2C256-7PQ208C supports simultaneous mixed-voltage operation through four independent I/O banks, each configurable for 1.8 V, 2.5 V, or 3.3 V signaling. This allows direct connection to heterogeneous peripherals without level shifters. Each bank's VCCO supply must match its assigned I/O standard, and the XC2C256-7PQ208C enforces voltage compliance per bank at the pin level.

Is JTAG boundary-scan supported on XC2C256-7PQ208C?

Yes, the XC2C256-7PQ208C fully complies with IEEE 1149.1 JTAG boundary-scan standards. It provides TCK, TMS, TDI, and TDO pins for test access, configuration, and debugging. Boundary-scan testing is enabled by default after power-up and does not require external initialization. The XC2C256-7PQ208C supports INTEST and EXTEST instructions for comprehensive board-level validation.

What thermal and power characteristics define XC2C256-7PQ208C for industrial use?

The XC2C256-7PQ208C operates across –40°C to +85°C ambient temperature and draws <10 µA in advanced low-power mode. Its 1.8 V core supply minimizes dynamic power, while programmable I/O drive strength and slew rate reduce switching noise. Thermal dissipation is managed via its 208-pin PQFP package with exposed thermal pad option (not standard on all variants), and the XC2C256-7PQ208C meets industrial-grade reliability requirements for continuous operation.