Lattice LC4064V-75T100-10I: A Comprehensive Technical Overview of the CPLD

The Lattice LC4064V-75T100-10I is a prominent member of the high-performance, low-power ispMACH® 4000V CPLD family from Lattice Semiconductor. This device exemplifies the ideal blend of high-speed logic integration and low power consumption, making it a versatile solution for a wide array of applications, including consumer electronics, telecommunications, industrial control, and system management.

Architectural Prowess: The Core of the ispMACH 4000V

At the heart of the LC4064V lies a robust and flexible architecture. The device features 64 macrocells, organized into four Function Blocks. Each macrocell can be configured for registered or combinatorial logic operations, providing designers with significant implementation flexibility. A key strength of this architecture is its Global Routing Pool (GRP), a centralized interconnect scheme that ensures predictable timing performance. Signals are routed through the GRP, eliminating the complex and often unpredictable delays associated with segmented interconnect architectures found in FPGAs. This results in pin-to-pin timing that is consistent and deterministic, a critical advantage for state machine and control logic applications.

Decoding the Part Number: LC4064V-75T100-10I

The part number itself provides a concise technical summary:

LC: Lattice CPLD.

4064: Denotes the 4000V family with 64 macrocells.

V: Represents the 1.8V core voltage technology.

-75: Specifies the maximum propagation delay (tPD) of 7.5 ns for commercial-grade parts.

-T100: Indicates the 100-pin Thin Quad Flat Pack (TQFP) package.

-10I: Signifies the Industrial temperature range (-40°C to +100°C).

Key Technical Specifications and Features

High-Speed Performance: With a maximum pin-to-pin delay of 7.5 ns and operating frequencies exceeding 200 MHz, the device can handle demanding high-speed logic and control tasks.

Ultra-Low Power Consumption: Built on a 1.8V core voltage technology, the ispMACH 4000V family is renowned for its exceptionally low static and dynamic power dissipation, which is crucial for battery-operated and power-sensitive designs.

In-System Programmability (ISP): The device is fully reprogrammable via the IEEE 1149.1 (JTAG) interface. This allows for easy design updates and field upgrades without removing the chip from the circuit board, significantly reducing development time and cost.

I/O Capabilities: The 100-pin TQFP package offers a substantial number of user I/O pins. These pins support various I/O standards, including LVCMOS 3.3V/2.5V/1.8V/1.5V and LVTTL, ensuring easy interfacing with other components in a system.

Enhanced Security: An integrated security bit prevents unauthorized reading or copying of the device's configuration pattern, protecting valuable intellectual property.

Target Applications

The combination of speed, low power, and deterministic timing makes the LC4064V-75T100-10I suitable for numerous functions:

Bus bridging and interface logic (e.g., PCI to local bus).

Power-on reset (POR) and system configuration control.

Address decoding and glue logic in microprocessor systems.

Data path control and state machine implementation.

Serial communication port management (UART, SPI, I²C control).

ICGOOODFIND

The Lattice LC4064V-75T100-10I stands as a highly capable and efficient CPLD, offering an optimal balance of predictable performance, low power, and design flexibility. Its deterministic timing model and non-volatile nature make it a superior choice over FPGAs for many control-oriented and "glue logic" applications, ensuring reliable and stable operation from the moment the system powers on.

Keywords:

1. CPLD

2. Low Power

3. Deterministic Timing

4. In-System Programmability (ISP)

5. Macrocell