AI生成コンテンツ: Current measurement uses a PCB copper trace as a sense resistor, enabling cost-effective sensing where high accuracy is not critical. The voltage drop across the trace converts current to voltage, amplified by a programmable gain amplifier (PGA) and digitized by a 14-bit ADC. Temperature compensation is essential due to the copper trace's temperature-dependent resistance, using an internal temperature sensor. Data buffers average ADC samples to reduce noise, while a memory table stores temperature-dependent resistance values for accurate current calculation. The system performs calibration to offset PGA errors and supports flexible gain settings. Design files include PCB prototype schematics, BOM, and Gerber files for implementation.

AI生成コンテンツ: The document reports the results of statistical randomness tests performed on a random number sequence generated by an embedded RNG in the RA4E2 device. Using the NIST SP 800-22 Revision 1a test suite and the sts-2.1.2 tool, the sequence passed all 15 statistical tests, including frequency, runs, and entropy tests, confirming its suitability for cryptographic applications. The test used a sequence length of 1,000,000 bits and a sample size of 1,000, with default significance levels. The report includes detailed pass proportions and P-values for each test, demonstrating compliance with NIST standards.