Lattice LC4064V-75TN-10I: A Comprehensive Technical Overview of the CPLD

The Lattice LC4064V-75TN-10I represents a significant component within the category of Complex Programmable Logic Devices (CPLDs). Designed for a wide array of general-purpose logic integration applications, this device combines high performance with low power consumption, making it a versatile solution for modern digital design.

At its core, this CPLD is built on a non-volatile, in-system programmable (ISP) architecture. This technology allows the device to be reconfigured even after being soldered onto a printed circuit board (PCB), greatly simplifying both prototyping and field upgrades. The LC4064V features 64 macrocells, providing a sufficient density of logic elements to implement moderately complex state machines, glue logic, and interface bridging functions.

A key attribute of the -75TN-10I variant is its performance grade. The `-10` speed grade indicates a pin-to-pin logic delay of 10ns, ensuring swift signal propagation critical for timing-sensitive applications. The device operates with a nominal supply voltage of 3.3V, aligning with modern low-voltage standards while maintaining robust TTL-compatible inputs and outputs for easy interfacing with legacy 5V systems.

The package type, TN, denotes a Thin Quad Flat Pack (TQFP) with 100 pins. This surface-mount package offers a compact footprint, which is essential for space-constrained designs. Its I/O count is ample for connecting to multiple peripherals, buses, and other system components. Furthermore, the device incorporates advanced features such as programmable slew rate control on outputs, which helps in managing electromagnetic interference (EMI), and individual tri-state control for each I/O pin, enhancing bus interface capabilities.

The LC4064V is renowned for its low power consumption, a hallmark of Lattice's design philosophy. It utilizes a 5.0V tolerant I/O structure, allowing seamless communication with higher voltage components without requiring external level shifters. Its standby current is exceptionally low, making it suitable for battery-powered or power-sensitive portable electronics.

From a design tool perspective, this CPLD is supported by Lattice's ispLEVER software suite. This environment provides a complete flow from design entry (using VHDL, Verilog, or schematic capture) to fitting, timing analysis, and programming, streamlining the development process for engineers.

In summary, the Lattice LC4064V-75TN-10I is a robust, flexible, and power-efficient CPLD. It effectively bridges the gap between simple PLDs and larger FPGAs, offering an optimal blend of capacity, speed, and features for implementing control logic in communications, computing, industrial, and consumer applications.

ICGOODFIND: The Lattice LC4064V-75TN-10I is a high-performance, low-power 3.3V CPLD featuring 64 macrocells, 10ns speed performance, and 100-pin TQFP packaging, making it an ideal choice for logic consolidation and interface management.

Keywords: CPLD, In-System Programmable (ISP), 3.3V Operation, 64 Macrocells, TQFP Package