ST TN100 RF, Руководство пользователя, Страница: 28 / 37

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Board assembly setup manual UM0579
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R8 0
Connects MEMS interrupt 2 pin of the
accelerometer to the PB14 MCU pin
which can be configured as an
external interrupt line. PB14 MCU pin is disconnected from
the MEMS interrupt 2 pin of the
accelerometer and can be freely
used for other purposes.
R11 0
Connects 2.5 V supply voltage to the
MEMS accelerometer U3 sensor
domain. Disconnects 2.5 V supply voltage
from the MEMS accelerometer U3
sensor domain.
Temperature sensor
R2 0
Connects temperature sensor output
pin to the PA0 MCU pin which can be
configured as ADC input.
PA0 MCU pin is disconnected from
the temperature sensor output pin
and can be freely used for other
purposes.
R9 0
Connects potentiometer output pin to
the PA1 MCU pin which can be
configured as ADC input. PA1 MCU pin is disconnected from
the Potentiometer output pin and can
be freely used for other purposes.
R6 0
Connects 2.5 V supply voltage to the
temperature sensor U2 and
potentiometer R10 domain. Disconnects 2.5 V supply voltage
from temperature sensor U2 and
potentiometer R10 sensor domain.
RS-232
R33
Connects USART TX pin PA9 of the
microcontroller to the RS-232
transceiver TX pin.
PA9 MCU pin is disconnected from
the RS-232 transceiver TX pin and
can be freely used for other
purposes.
R34
Connects USART RX pin PA10 of the
microcontroller to the RS-232
transceiver RX pin.
PA10 MCU pin is disconnected from
the RS-232 transceiver RX pin and
can be freely used for other
purposes.
Table 14. Board assembly setup manual (continued)
Resistor Value (
Ω
) Assembled Not assembled