In summary, the Lattice ispLSI1016E-80LJ represents a robust and flexible solution for digital logic design, successfully merging a well-established, reliable architecture with the modern necessity of in-system programmability. This device belongs to the high-density Programmable Logic Device (PLD) family, built upon Lattice Semiconductor's proven EECMOS technology. Its core comprises a Generic Logic Block (GLB) architecture, interconnected by a Global Routing Pool (GRP), which provides designers with a predictable and efficient path for implementing complex combinatorial and sequential logic functions.
A key differentiator for the ispLSI1016E was its incorporation of in-system programmability (ISP). This feature, a significant advancement over devices requiring dedicated programmers, allowed engineers to solder the chip directly onto a printed circuit board (PCB) and then configure or reconfigure its logic circuitry electronically. This drastically streamlined the development cycle, facilitated rapid prototyping, and enabled crucial field upgrades and bug fixes without physical hardware changes, reducing both time and cost.
The specific metrics of the 1016E-80LJ model highlight its targeted capabilities. The "1016" denotes its approximate gate complexity of 2000 PLD gates, a substantial density for its era that could integrate numerous discrete ICs into a single chip. The "-80" suffix indicates a pin-to-pin delay of 7.5ns, enabling it to operate at clock frequencies up to 125 MHz, which was considered high-speed for a wide range of applications, including bus interfacing, state machine control, and address decoding. Finally, the "LJ" package refers to a low-profile 44-pin PLCC (Plastic Leaded Chip Carrier), a compact and durable form factor that was widely used and easy to handle during assembly.
This particular combination of speed, density, and package type cemented its role across diverse market segments. It became a staple in telecommunications hardware, computer peripherals, and industrial control systems. Its reliability and ease of use have granted it remarkable longevity; it remains a viable component for maintaining and repairing legacy systems while still being considered for new designs where its balance of features is optimal, avoiding the overhead of more modern, larger FPGAs.
ICGOODFIND: The Lattice ispLSI1016E-80LJ stands as a seminal component in the evolution of programmable logic. Its enduring legacy is a testament to a perfectly balanced design that offered just the right amount of logic resources, more than adequate speed, and the revolutionary convenience of in-system programmability, making it a true workhorse for a generation of digital designers.
Keywords: In-System Programmability (ISP), Programmable Logic Device (PLD), High-Density Logic, Generic Logic Block (GLB), PLCC Package.
