XC9536XL-5PC44C

The XC9536XL-5PC44C is a Xilinx CPLD (9536XL family) with 36 macrocells, designed for small, deterministic digital logic. It’s organized as macrocells built from a 4-input LUT plus a D-type flip-flop, suitable for glue logic, small state machines, decoders, and simple interfaces. The “-5” is the speed grade (faster part within the family). “PC44C” indicates the 44-pin package (likely PLCC-44 or QFP-44) one of the device’s physical options. Configuration is loaded from an external PROM or via JTAG (ISE/Impact tools), enabling in-system reprogramming. Features typically include programmable I/O with standard Xilinx CPLD primitives (global clock enable, asynchronous/synchronous resets, etc.). It is not a microcontroller and has modest density and speed suitable for low-to-moderate complexity logic in consumer/embedded projects. For exact electrical specs and I/O capabilities, refer to the XC9536XL-5PC44C datasheet.

XC9536XL-5PC44C features:
- 36 macrocells for programmable logic
- 44-pin PLCC package (PC44C)
- In-system programmable CPLD with JTAG boundary-scan
- 5V-tolerant I/O (XL family) for TTL/CMOS compatibility
- Flexible macrocell architecture with programmable interconnect
- Two global clock inputs and global reset options
- Speed grade -5 (fastest option in this family)
- Low power consumption; suitable for glue logic and timing-critical tasks

- Pin count: 44 pins (PC44C = PLCC44 package)
- Function: Xilinx XC9536XL is a 3.3V CPLD (complex programmable logic device) with 36 macrocells, used for programmable digital logic (in-system programmable). The “-5” denotes speed grade.

- Manufacturer: Xilinx, Inc.
- What kind of company: An American multinational semiconductor company specializing in programmable logic devices (PLDs) such as FPGAs and CPLDs, and the related design software.

XC9536XL-5PC44C is a small, low-cost CPLD suitable for simple digital logic. Typical applications:
- Glue logic for microprocessors/microcontrollers (address decoding, chip selects, bus interfacing)
- Finite state machines for control sequencing
- Timing/control circuits (counters, dividers, pulse generators)
- Data path routing (multiplexers, demultiplexers, shifters)
- Peripheral interfaces and I/O expansion (LED drivers, keypad scanners, display drivers)
- Simple serial-to-parallel or parallel-to-serial bridging (SPI/I2C-like controllers)
- Prototyping and educational lab use

44-pin Plastic DIP package (DIP-44).