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A3P250-1FGG144T Datasheet(PDF) 5 Page - Actel Corporation |
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A3P250-1FGG144T Datasheet(HTML) 5 Page - Actel Corporation |
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5 / 136 page  v1.0 1 - 1 1 – Automotive ProASIC3 Device Family Overview General Description Automotive ProASIC3 nonvolatile flash technology gives automotive system designers the advantage of a secure, low-power, single-chip solution that is live at power-up (LAPU). Automotive ProASIC3 is reprogrammable and offers time-to-market benefits at an ASIC-level unit cost. These features enable designers to create high-density systems using existing ASIC or FPGA design flows and tools. Automotive ProASIC3 devices offer 1 kbit of on-chip, reprogrammable, nonvolatile FlashROM storage as well as clock conditioning circuitry based on an integrated phase-locked loop (PLL). Automotive ProASIC3 devices have up to 1 million system gates, supported with up to 144 kbits of SRAM and up to 300 user I/Os. Automotive ProASIC3 devices are the only firm-error-immune automotive grade FPGAs. Firm-error immunity makes them ideally suited for demanding applications in powertrain, safety, and telematics-based subsystems, where firm-error failure is not an option. Firm errors in SRAM-based FPGAs can result in high defect levels in field-deployed systems. These unavoidable defects must be considered separately from standard defects and failure mechanisms when looking at overall system quality and reliability. Flash Advantages Reduced Cost of Ownership Advantages to the designer extend beyond low unit cost, performance, and ease of use. Unlike SRAM-based FPGAs, flash-based Automotive ProASIC3 devices allow all functionality to be live at power-up; no external boot PROM is required. On-board security mechanisms prevent access to all the programming information and enable secure remote updates of the FPGA logic. Flash-based FPGAs are LAPU Class 0 devices, offering the lowest available power in a single-chip device and providing firm-error immunity. The Automotive ProASIC3 family device architecture mitigates the need for ASIC migration at high user volumes. This makes the Automotive ProASIC3 family a cost- effective ASIC replacement solution, especially for automotive applications. Security The nonvolatile, flash-based Automotive ProASIC3 devices do not require a boot PROM, so there is no vulnerable external bitstream that can be easily copied. Automotive ProASIC3 devices incorporate FlashLock, which provides a unique combination of reprogrammability and design security without external overhead, advantages that only an FPGA with nonvolatile flash programming can offer. Automotive ProASIC3 devices utilize a 128-bit flash-based lock and a separate AES key to secure programmed intellectual property and configuration data. In addition, all FlashROM data in Automotive ProASIC3 devices can be encrypted prior to loading, using the industry-leading AES- 128 (FIPS192) bit block cipher encryption standard. The AES was adopted by the National Institute of Standards and Technology (NIST) in 2000 and replaces the 1977 DES standard. Automotive ProASIC3 devices have a built-in AES decryption engine and a flash-based AES key that make them the most comprehensive programmable logic device security solution available today. Automotive ProASIC3 devices with AES-based security allow for secure, remote field updates over public networks such as the Internet, and ensure that valuable IP remains out of the hands of system overbuilders, system cloners, and IP thieves. The contents of a programmed Automotive ProASIC3 device cannot be read back, although secure design verification is possible. Additionally, security features of Automotive ProASIC3 devices provide anti-tampering protection. Security, built into the FPGA fabric, is an inherent component of the Automotive ProASIC3 family. The flash cells are located beneath seven metal layers, and many device design and layout |
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