FPGA & CPLD

RTAX2000D-1CQ352V

RTAX2000D-1CQ352V - 2M-Gate Rad-Tolerant FPGA | Microchip

The Microchip Technology (Actel/Microsemi) RTAX2000D-1CQ352V is a radiation-tolerant, antifuse-based FPGA delivering approximately 2 million equivalent gates with 29,568 logic cells organized as 19,712 CLBs, operating from a 1.425V to 1.575V core supply (nominal 1.5V) in a 352-pin ceramic CQFP (CQ352) package. A radiation-tolerant FPGA is a field-programmable gate array qualified for spaceflight environments, where total ionizing dose (TID) and latch-up immunity determine survivability. Within the power-management hierarchy of a spacecraft avionics system, this FPGA sits between the onboard computer and mission-specific interface electronics, implementing glue logic, bus controllers, and signal processing. The RTAX-D family belongs to the broader RTAX-S/SL and RTAX-DSP radiation-tolerant FPGA portfolio from Microchip (formerly Actel and Microsemi). Key features include highly reliable nonvolatile antifuse technology that is live at power-up with no configuration device required, up to 120 DSP mathblocks supporting 18-bit x 18-bit multiply-accumulate operations at 125 MHz, and up to 540 kbits of embedded SRAM memory with optional EDAC protection. The D suffix denotes enhanced screening: RTAX-D and RTAX-DL devices share the same silicon as RTAX-S/SL but are distinguished by tighter ICCA current limits at 125 degrees C final electrical test (Condition A applies to RTAX2000D/DL). Architecturally, the device uses a 0.15-micron CMOS process with antifuse interconnect, which is inherently immune to configuration upsets because programming is permanent. Total dose tolerance is 300 krad (Si) functional and 200 krad (Si) per the family datasheet, supporting LEO, MEO, and GEO missions. Typical applications include satellite payload data processing, spacecraft bus controllers, telemetry and telecommand interfaces, and rad-hard signal processing chains needing on-chip DSP mathblocks. Design consideration: because antifuse programming is one-time, prototype using footprint-compatible adaptor boards (such as the Aldec ACT-H3Ki-CQ352) and migrate via the EDIF netlist and pinout conversion flow described in the manufacturer datasheet. This page synthesizes distributor availability, screening-variant cross-references, and design guidance not consolidated in the manufacturer datasheet.