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Motore di ricerca datesheet componenti elettronici |
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Motore di ricerca datesheet componenti elettronici |
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STM32G081EB Scheda tecnica(PDF) 27 Page - STMicroelectronics |
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STM32G081EB Scheda tecnica(HTML) 27 Page - STMicroelectronics |
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27 / 136 page  DS12231 Rev 4 27/136 STM32G081xB Functional overview 36 3.16 Voltage reference buffer (VREFBUF) 3.17 Comparators (COMP) Two embedded rail-to-rail analog comparators have programmable reference voltage (internal or external), hysteresis, speed (low for low-power) and output polarity. The reference voltage can be one of the following: • external, from an I/O • internal, from DAC • internal reference voltage (VREFINT) or its submultiple (1/4, 1/2, 3/4) The comparators can wake up the device from Stop mode, generate interrupts, breaks or triggers for the timers and can be also combined into a window comparator. 3.18 Random-number generator (RNG) The embedded RNG delivers 32-bit random numbers generated by an integrated analog circuit. 3.19 Advanced-encryption-standard (AES) hardware accelerator The embedded AES hardware accelerator can encipher or decipher data, using AES algorithm. When enabled, an embedded buffer provides the internal reference voltage to analog blocks (for example ADC) and to VREF+ pin for external components. The internal voltage reference buffer supports two voltages: • 2.048 V • 2.5 V An external voltage reference can be provided through the VREF+ pin when the internal voltage reference buffer is disabled. On some packages, the VREF+ pad of the silicon die is double-bonded with supply pad to common VDD/VDDA pin and so the internal voltage reference buffer cannot be used. |
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