XC3090L-8PC84I
XC3090L-8PC84I - XC3000 FPGA 6K Gates 320 Cells 80MHz | Xilinx
The Xilinx XC3090L-8PC84I is a member of the XC3000 family of Field Programmable Gate Arrays (FPGAs), offered in an 84-pin Plastic Leaded Chip Carrier (PLCC) package with J-lead terminations. The device contains 6,000 usable gates organized into 320 Configurable Logic Blocks (CLBs), supported by 64,160 configuration program-store bits, and operates at a maximum toggle frequency of 80 MHz from a 3.3 V core supply. The "L" suffix denotes the low-voltage 3.3 V variant of the original 5 V XC3090, and the "I" suffix indicates the industrial operating temperature grade of -40 °C to +85 °C.
A Field Programmable Gate Array (FPGA) is a semiconductor integrated circuit built around an array of configurable logic blocks, programmable interconnect, and programmable I/O blocks, all of which are defined by a user-loaded configuration bitstream. FPGAs sit at the top of the programmable logic hierarchy, above simple PLDs and CPLDs, and are used as flexible digital platforms ranging from glue logic and bus interfacing to complete processor cores and signal-processing pipelines. The XC3000 series, introduced by Xilinx in the late 1980s, was the company's first commercially successful FPGA family and established the SRAM-based configuration architecture that subsequent generations continued to use.
Key features of the XC3090L-8PC84I include 70 user I/O pins distributed around the perimeter, an internal configuration program store that holds the user-defined logic, and per-IOB input-threshold programmability so that each I/O can be configured for TTL or CMOS compatible external signaling. The global input buffer threshold, plus per-pin output drive controls, allow direct interfacing with mixed-logic voltage domains without external level shifters. The 80 MHz toggle rate and deterministic routing make the part well suited to glue logic, state-machine controllers, and parallel bus interfaces in industrial embedded systems.
Architecturally, the device combines a perimeter of I/O Blocks (IOBs), a core matrix of Configurable Logic Blocks (CLBs), and a programmable interconnect network. Each CLB contains a small combinational look-up table, storage, and carry logic, while the IOBs include input threshold detection, output drivers, and registers. Configuration is loaded into the on-chip SRAM program store at power-up from an external PROM or microprocessor, which means the design is volatile and must be reloaded after every power cycle - a defining characteristic of the XC3000 family and a key consideration when selecting this part for new designs.
Typical applications for the XC3090L-8PC84I include legacy industrial-control boards, telecommunications line cards, test-and-measurement fixtures, and digital glue logic on custom hardware where it replaces discrete TTL or 4000-series CMOS. Because it is a mature, widely understood device with abundant reference designs, it is also used by engineers maintaining long-lifecycle systems in factory automation and military/aerospace subsystems where re-qualification of newer FPGAs would be prohibitively expensive. Designers should be aware that the XC3000 family has been End-of-Life for many years, and active new designs are generally not supported by current Xilinx/AMD Vivado toolchains.
When designing in this part, allow for configuration time at power-up (the bitstream must be loaded from an external source), provide proper decoupling on the 3.3 V supply, and respect the 84-pin PLCC J-lead land pattern exactly - the package is not pin-compatible with modern leadless FPGA packages. If a long-term or new design is being started, evaluate Spartan-6, Spartan-7, or MAX II/10 CPLD families as migration paths with HDL portability, while preserving the XC3090L-8PC84I for existing maintenance.
This page synthesizes distributor pricing, drop-in same-package alternatives from the XC3000 family, and practical design notes not consolidated on the manufacturer datasheet alone.
USD $55,00
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