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STM32G081CB bảng dữ liệu(PDF) 27 Page - STMicroelectronics

tên linh kiện STM32G081CB
Giải thích chi tiết về linh kiện  Arm® Cortex®-M0 32-bit MCU, 128 KB Flash, 36 KB RAM,4x USART, timers, ADC, DAC, comm. I/Fs, AES, RNG, 1.7-3.6V
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
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STM32G081CB bảng dữ liệu(HTML) 27 Page - STMicroelectronics

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DS12231 Rev 4
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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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