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STM32G041C6 bảng dữ liệu(PDF) 25 Page - STMicroelectronics

tên linh kiện STM32G041C6
Giải thích chi tiết về linh kiện  Arm® Cortex®-M0 32-bit MCU, up to 64 KB Flash, 8 KB RAM, 2x USART, timers, ADC, 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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STM32G041C6 bảng dữ liệu(HTML) 25 Page - STMicroelectronics

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DS12993 Rev 3
25/121
STM32G041x6/x8
Functional overview
32
3.14.3
VBAT battery voltage monitoring
This embedded hardware feature allows the application to measure the VBAT battery voltage
using an internal ADC input. As the VBAT voltage may be higher than VDDA and thus outside
the ADC input range, the VBAT pin is internally connected to a bridge divider by three. As a
consequence, the converted digital value is one third the VBAT voltage.
3.15
Voltage reference buffer (VREFBUF)
3.16
Random-number generator (RNG)
The embedded RNG delivers 32-bit random numbers generated by an integrated analog
circuit.
3.17
Advanced-encryption-standard (AES) hardware accelerator
The embedded AES hardware accelerator can encipher or decipher data, using AES
algorithm.
Table 6. Internal voltage reference calibration values
Calibration value name
Description
Memory address
VREFINT
Raw data acquired at a
temperature of 30 °C (± 5 °C),
VDDA = VREF+ = 3.0 V (± 10 mV)
0x1FFF 75AA - 0x1FFF 75AB
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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