Lattice LC4064ZC-5TN100-75I: A Comprehensive Technical Overview of the Low-Power CPLD

In the realm of digital logic design, Complex Programmable Logic Devices (CPLDs) remain a cornerstone for "glue logic," system configuration, and power-sensitive applications. The Lattice Semiconductor LC4064ZC-5TN100-75I stands as a prime example of this category, engineered to deliver a robust blend of density, performance, and remarkably low power consumption. This article provides a detailed technical examination of this specific device.

At its core, the LC4064ZC-5TN100-75I is a member of Lattice's ultra-low-power ispMACH® 4000ZE CPLD family. The "64" in its nomenclature denotes that it contains 64 macrocells, which are the fundamental building blocks of logic within the device. This provides a sufficient number of logic elements for implementing a wide array of combinatorial and sequential functions, making it suitable for tasks like address decoding, bus interfacing, state machine control, and I/O expansion.

A defining characteristic of this CPLD is its ultra-low power consumption. Fabricated on an advanced low-voltage process technology, it operates at a core voltage of 1.8V. This results in dramatically reduced static and dynamic power compared to older 3.3V or 5V CPLD alternatives. This feature is paramount for battery-operated portable devices, handheld instrumentation, and any application where thermal management and energy efficiency are critical design constraints.

The device's package and speed grade offer further insight into its capabilities. The "-5TN100-75I" suffix decodes as follows:

-5: This is the speed grade, indicating a pin-to-pin logic propagation delay (tPD) of 5.0 ns maximum. This guarantees high-performance operation for most control-oriented applications.

TN100: This specifies the 100-pin Thin Quad Flat Pack (TQFP) package. This surface-mount package offers a compact footprint, making it suitable for space-constrained PCB designs.

-75I: The "I" denotes the industrial temperature grade, meaning the device is rated for operation within the industrial temperature range of -40°C to +100°C. This ensures reliable performance in harsh environmental conditions beyond standard commercial settings.

The architecture is based on a familiar and efficient CPLD structure. The 64 macrocells are arranged in four function blocks, interconnected by a centralized Programmable Switch Matrix. This guarantees predictable timing and simplifies the design process. The device is also in-system programmable (ISP) via the IEEE 1149.1 (JTAG) interface, allowing for rapid design iterations and field upgrades without removing the chip from the circuit board.

In summary, the Lattice LC4064ZC-5TN100-75I is a highly optimized CPLD solution that prioritizes low power and reliable performance. Its combination of 64 macrocells, 5ns speed, industrial temperature tolerance, and a compact 100-pin TQFP package makes it an excellent choice for designers needing to consolidate logic, manage I/O, and reduce overall system power budget.

ICGOODFIND: The Lattice LC4064ZC-5TN100-75I is a premier choice for power-conscious designers seeking a high-performance, industrial-grade CPLD for logic integration and system control with minimal energy expenditure.

Keywords: Low-Power CPLD, ispMACH 4000ZE, 64 Macrocells, Industrial Temperature, In-System Programmable (ISP)