Temperature Sensor - STMicroelectronics STM32L152D-EVAL User Manual

Hardware layout and configuration
Table 18.
Jumper
PB4 is connected to LDR_OUT when JP2 is set as shown to the right:
JP2
PB4 is connected to TRST when JP2 is set as shown to the right:
(Default setting).
Potentiometer RV3 is connected to ADC input PF10 used as ADC input
when JP13 is set as shown to the right: (Default setting).
Potentiometer RV3 used as LDR variable threshold input is connected to
comparator inverting input GPCOMP_IN- (PB3) when JP13 is set as shown
JP13
to the right:
Potentiometer RV3 is connected to non inverting input
GPCOMP_IN+(PB5). The comparator inverting input can be connected to
¼ band gap, ½ band gap, band gap or DAC internally in order to test the
possibility to wakeup the MCU when an external voltage reaches a
programmable threshold when JP13 is set as shown to the right:
PB5 is connected to I2C_SMB, the interrupt output of temperature sensor
U24 when JP14 is closed (Default setting).
JP14
PB5 is disconnected from I2C_SMB but remains connected to COM_IN+
when JP14 is open for comparator application.
The LCD glass module has to be mounted in IO position for comparator usage. Refer to
Section 2.6: LCD glass module
2.18

Temperature sensor

Temperature sensor STLM75M2E is connected to the I2C bus of the STM32L152ZDT6
through two transistors to support a wide voltage range from 1.65 V to 3.6 V on the I2C bus.
I2C address of temperature sensor is 0b100100(A0), A0 can be 0 or 1 according to SB9.
Table 19.
Solder bridge
SB9
The LCD glass module has to be mounted on IO position for temperature sensor usage.
Refer to Section 2.6: LCD glass module
22/56
www.BDTIC.com/ST
Comparator, LDR and potentiometer related jumpers
for detail.
Temperature sensor related solder bridge
I2C address A0 is 0 when SB3 is open. (Default setting)
I2C address A0 is 1 when SB3 is closed.
Doc ID 022868 Rev 1
Description
Description
for detail.
UM1521
Setting