AMD XC9536XL-7VQ44I

Overview

XC9536XL-7VQ44I from AMD is a 36-macrocell CPLD featuring 5 V-tolerant I/O, 7.5 ns pin-to-pin propagation delay, and in-system programmability via JTAG. It serves as a logic replacement for discrete TTL/CMOS in industrial control modules requiring deterministic timing and reconfigurable glue logic.

For engineers reviewing the XC9536XL-7VQ44I datasheet, pinout, applications, or equivalent options, key selection criteria include macrocell count, propagation delay grade, VQ44 package thermal profile, and IEEE 1149.1 compliance for boundary-scan testability.

Technical Context

This device belongs to the XC9500XL family of high-performance, low-voltage CPLDs built on 0.35 µm CMOS technology. It integrates 36 macrocells across two function blocks, each with dedicated product-term sharing and sum-of-products logic architecture.

The XC9536XL-7VQ44I supports 5 V-tolerant inputs and 3.3 V core operation, enabling direct interfacing with legacy 5 V systems while maintaining low power consumption. Its JTAG interface complies with IEEE 1149.1 and enables in-system programming and boundary-scan testing without requiring external configuration devices.

Key Specifications

Pinout & Package

VQ44 (Very Thin Quad Flatpack, 44-pin) package with 1.0 mm pitch, 10 mm × 10 mm body size, and exposed thermal pad for enhanced heat dissipation in continuous-duty applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XCR3032XL-7VQ44I and LC4032ZC-75T44C, the XC9536XL-7VQ44I uniquely balances 5 V tolerance, industrial temperature range, and proven field reliability in brownfield industrial upgrades-making it the preferred choice where legacy interface compatibility and long-term supply stability are mandatory.

Availability

XC9536XL-7VQ44I is available at Aetrix Electronics and suitable for industrial automation, test equipment, and motor control applications requiring stable component supply across extended product lifecycles.

Supply support for XC9536XL-7VQ44I 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) is a global semiconductor leader delivering adaptive computing solutions for data center, embedded, and industrial markets.

The XC9500XL family was designed specifically for cost-sensitive, high-reliability industrial control applications requiring reprogrammable logic with deterministic timing and long-lifecycle support.

FAQ

What is the maximum operating frequency supported by the XC9536XL-7VQ44I?

The XC9536XL-7VQ44I supports a maximum system clock frequency of 133 MHz under typical conditions, derived from its 7.5 ns pin-to-pin propagation delay and internal register-to-register timing parameters. This allows reliable operation in synchronous logic designs with setup/hold margins compliant with industrial-grade timing constraints. The actual achievable frequency depends on logic depth and routing, but the XC9536XL-7VQ44I datasheet guarantees 133 MHz for register-to-register paths.

Does the XC9536XL-7VQ44I require an external configuration PROM?

No, the XC9536XL-7VQ44I does not require an external configuration PROM because it features non-volatile EEPROM-based configuration memory. Configuration is retained after power cycling, and the device powers up ready to operate. In-system programming via JTAG eliminates the need for external memory devices, simplifying BOM and reducing board space. The XC9536XL-7VQ44I retains its logic configuration indefinitely unless explicitly reprogrammed.

Can the XC9536XL-7VQ44I be used in place of older XC9536-10VQ44 devices?

Yes, the XC9536XL-7VQ44I is a drop-in replacement for the original XC9536-10VQ44 in most applications, offering improved speed (7.5 ns vs. 10 ns), lower power, and enhanced ISP capabilities. Pinout, voltage levels, and JTAG interface are identical. However, designers must verify timing closure in existing designs due to faster propagation-some previously marginal paths may now meet setup requirements. The XC9536XL-7VQ44I maintains full backward compatibility with XC9536-10VQ44 software tools and JEDEC files.

What development tools support programming the XC9536XL-7VQ44I?

The XC9536XL-7VQ44I is supported by AMD's (formerly Xilinx) WebPACK ISE design suite, including schematic capture, ABEL/VHDL synthesis, place-and-route, and JTAG programming utilities. Third-party tools such as Lattice Diamond and open-source Project Trellis do not support this device. Programming is performed via standard IEEE 1149.1 JTAG interface using compatible cables like Digilent HS3 or Xilinx DLC10. All configuration bitstreams for the XC9536XL-7VQ44I are generated exclusively within the ISE toolchain.

Is the XC9536XL-7VQ44I RoHS compliant and lead-free?

Yes, the XC9536XL-7VQ44I is RoHS compliant and manufactured with lead-free (Pb-free) terminations per JEDEC J-STD-020. The VQ44 package uses matte tin plating over copper leads, qualified for reflow soldering up to 260°C peak temperature. Full compliance documentation-including substance declarations and test reports-is available from AMD's official product change notifications (PCNs) dated Q3 2005 onward. The XC9536XL-7VQ44I meets EU RoHS Directive 2011/65/EU and China RoHS II requirements.