TA80C186XL-20

The Intel TA80C186XL-20 is a 16-bit embedded microprocessor from Intel’s 80C186 family, designed for real-time control in high-reliability systems. Fabricated in low-power CMOS technology and clocked at 20 MHz, it integrates a CPU core with essential peripherals—programmable interval timers, a priority interrupt controller, dual DMA channels, and programmable chip-select logic—on a single die. The ceramic pin grid array (CPGA) package provides rugged mechanical integrity and efficient thermal dissipation, making the device suitable for environments with wide temperature swings and continuous vibration.

Typical end-use scenarios include industrial automation controllers, avionics flight computers, defense guidance and targeting systems, and embedded data acquisition platforms where deterministic execution and sustained availability are mandatory. The “XL” suffix generally denotes an extended temperature range variant, and the all-ceramic PGA housing aligns with military and aerospace derating practices. This processor is long out of active production; authentic supply is constrained to aftermarket and authorized distribution remnants, so obsolescence and counterfeit risk are primary procurement concerns. Sourcing efforts should validate traceability, date codes, and physical inspection criteria against Intel’s original packaging specifications to ensure component integrity in long-life program sustainment.