Lattice LC4512V-75TN176C-10I: A Comprehensive Technical Overview of the CPLD

The Lattice LC4512V-75TN176C-10I is a high-performance, high-density Complex Programmable Logic Device (CPLD) from Lattice Semiconductor's mature ispMACH 4000V family. This device is engineered to bridge the gap between simple PLDs and larger FPGAs, offering an optimal blend of predictable timing, instant-on capability, and design flexibility. It serves as a robust solution for a wide array of applications, including communication interfaces, system management, and control logic integration.

At the core of this CPLD lies a sophisticated architecture built upon a programmable interconnect matrix connecting multiple Generic Logic Blocks (GLBs). Each GLB contains 16 macrocells, which are the fundamental units for implementing combinatorial and sequential logic. The specific part number, LC4512V-75TN176C-10I, provides detailed information about the device:

LC4512V: Denotes the family (ispMACH 4000V) and the logic density, with '512' indicating 512 macrocells.

-75: Specifies the performance grade, with -10 being 10ns pin-to-pin delay and -75 being 7.5ns, indicating a faster speed grade.

TN176: Defines the package type (Thin Fine-Pitch Ball Grid Array) and the pin count (176 pins).

C: Indicates the commercial temperature range (0°C to +70°C).

-10I: Confirms the speed grade is 10ns and is in-system programmable (ISP).

A key advantage of this CPLD is its non-volatile E²CMOS technology. This technology ensures that the configured design is retained even when power is removed, enabling instant operation upon power-up without the need for an external boot configuration memory. This is a critical feature for systems requiring immediate functionality.

The device offers 128 I/O pins (from the 176-pin package), providing ample connectivity for interfacing with other components like microprocessors, memory, and peripheral devices. These I/Os support various single-ended standards, such as LVCMOS and LVTTL, offering voltage compatibility with modern 3.3V systems. The architecture also supports advanced logic synthesis and optimization, allowing designers to implement complex state machines, address decoders, and data path control with high efficiency.

Furthermore, the in-system programmability (ISP) via the IEEE 1149.1 (JTAG) interface allows for rapid design iterations and field upgrades. This facilitates easy debugging and prototyping, significantly reducing time-to-market for end products. The deterministic timing model of the CPLD architecture ensures that performance is consistent and predictable across all design densities, eliminating the routing uncertainties often associated with FPGAs.

In summary, the Lattice LC4512V-75TN176C-10I represents a powerful and reliable CPLD solution. Its combination of high density, fast performance, and non-volatile technology makes it an excellent choice for consolidating glue logic, implementing complex control functions, and managing system initialization tasks in numerous embedded applications.

ICGOODFIND: The Lattice LC4512V-75TN176C-10I is a high-density, high-performance CPLD offering deterministic timing and instant-on functionality, making it an ideal choice for critical control and interface logic in commercial electronic systems.

Keywords: CPLD, Non-volatile, ispMACH 4000V, Programmable Logic, JTAG