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UM1817 데이터시트(PDF) 21 Page - STMicroelectronics

부품명 UM1817
상세설명  Evaluation board with STM32F091VC MCU
PDF  58 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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UM1817 데이터시트(HTML) 21 Page - STMicroelectronics

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UM1817
Hardware layout and configuration
57
2.12
LDR (Light Dependent Resistor)
The VDDA is divided by resistor bridge of LDR VT9ON1 and 8.2K resistor and connected to
PA1 (COM1_IN+/ADC IN1) as shown below in Figure 7 on the STM32091C-EVAL
evaluation board.
Figure 7. GP comparator 1
It is possible to compare LDR output with 1/4 band gap, 1/2 band gap, 3/4 band gap, band
gap and DAC1 OUT and to connect LDR output to ADC IN1 for AD conversion.
2.13
Temperature sensor
A temperature sensor STLM75M2F is connected to I2C1 bus of the STM32F091VCT6, and
share same I2C1 bus with RF-EEPROM and DDC on HDMI_Source connector CN4.
I2C address of temperature sensor is 0b100100 (A0), A0 can be 0 or 1, depending on the
setting of SB1, see Table 13.



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