AMD XC9536XL-10VQ44C

Overview

XC9536XL-10VQ44C from AMD (acquired by Xilinx) is a 36-macrocell CPLD in VQFP-44 package, with 10 ns propagation delay, 5 V tolerant I/O, and in-system programmable via JTAG. It serves as glue logic replacement in legacy industrial control backplanes.

For engineers reviewing the XC9536XL-10VQ44C datasheet, pinout, applications, or equivalent options, key selection factors include macrocell count, I/O voltage tolerance, JTAG programmability, and legacy 5 V system compatibility.

Technical Context

This CPLD implements a sum-of-products architecture with three levels of logic hierarchy: macrocells, function blocks, and global interconnect matrix. Each macrocell supports registered or combinatorial output with independent clock, reset, and output enable controls.

It uses EEPROM-based non-volatile configuration storage, enabling instant-on operation without external configuration PROM. The device supports IEEE 1149.1 JTAG boundary-scan for testing and programming, and includes slew-rate controlled outputs to reduce EMI in mixed-signal environments.

Key Specifications

Pinout & Package

VQFP-44 (Very Thin Quad Flat Package), 10 mm × 10 mm body, 0.8 mm lead pitch, 44 leads, exposed pad not present.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC9536XL-10VQ44C, both alternatives retain pin-compatible packaging and electrical compatibility but offer higher macrocell counts-enabling incremental logic growth without changing PCB layout or power delivery design.

Availability

XC9536XL-10VQ44C is available at Aetrix Electronics and suitable for industrial PLC backplanes, legacy test equipment upgrades, and avionics maintenance interfaces requiring stable component supply and long-term obsolescence management.

Supply support for XC9536XL-10VQ44C 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; this device originated from Xilinx's mature CPLD product line before acquisition.

The XC9500XL family was designed specifically for cost-sensitive, high-reliability 5 V industrial and aerospace applications requiring non-volatile, in-system programmable logic with deterministic timing.

FAQ

What is the maximum operating frequency supported by XC9536XL-10VQ44C?

The XC9536XL-10VQ44C has a 10 ns maximum propagation delay, supporting reliable operation up to 50 MHz in synchronous logic paths. Actual system frequency depends on routing delays and macrocell utilization; timing analysis must be performed using Xilinx WebPACK or ISE tools with the specific design netlist. The XC9536XL-10VQ44C does not specify a guaranteed maximum clock frequency in datasheets due to architecture-dependent path variations.

Does XC9536XL-10VQ44C require an external configuration PROM?

No, XC9536XL-10VQ44C uses on-chip EEPROM for configuration storage and powers up fully functional immediately without external PROM or initialization sequence. This eliminates boot latency and reduces BOM count. The XC9536XL-10VQ44C retains its programmed logic through power cycles and requires no external memory for configuration loading.

Can XC9536XL-10VQ44C interface directly with 5 V TTL logic?

Yes, XC9536XL-10VQ44C features 5 V-tolerant I/O pins that accept 5 V input signals while operating from a 3.3 V core supply. This allows direct connection to legacy 5 V TTL and CMOS devices without level-shifting circuitry. The XC9536XL-10VQ44C maintains full voltage-level compatibility while reducing power consumption versus older 5 V CPLDs.

Is JTAG programming supported on XC9536XL-10VQ44C?

Yes, XC9536XL-10VQ44C implements full IEEE 1149.1 JTAG boundary-scan for in-system programming and testing. Pins TCK, TMS, TDI, and TDO are assigned to VQFP-44 pins 1–4. The XC9536XL-10VQ44C supports programming via Xilinx Impact software and compatible third-party JTAG adapters without requiring device removal.

What is the recommended reflow profile for XC9536XL-10VQ44C?

XC9536XL-10VQ44C is qualified for standard Pb-free reflow per JEDEC J-STD-020. Peak temperature must not exceed 260 °C for ≤ 30 seconds, with ramp-up rate ≤ 3 °C/s and ramp-down rate ≤ 6 °C/s. The XC9536XL-10VQ44C VQFP-44 package is moisture-sensitive level 3 (MSL3) and requires bake conditioning if exposed beyond floor life before reflow.