Hardware layout and configuration
UM0488
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Doc ID 14220 Rev 5
2.12 Temperature
sensor
One I
2
C interface temperature sensor STLM75 (–55°C to +125°C) connected to I
2
C of
STM32F103ZGT6 is available on the board.
2.13 Analog
input
Three BNC connectors CN2,CN3 and CN5 are connected to PC3, PC2 and PC1 of the
STM32F103ZGT6 as external analog input. The 50 ohm terminal resistor can be enabled by
closing the solder bridge JP23, JP24 and JP25 for each BNC connector. A low-pass filter
can be implemented for each BNC connector CN5, CN3 and CN2 by replacing R5 and C22,
R4 and C13, R3 and C9 with the right resistor and capacitor values, depending on the
requirements of your application.
2.14 IrDA
IrDA communication is supported by the IrDA transceiver U13 connected to USART3 of
STM32F103ZGT6. The IrDA transceiver can be enabled or disabled by JP21.
2.15 USB
The STM3210E-EVAL evaluation board supports USB2.0 compliant full speed
communication via a USB type B connector (CN14). The evaluation board can be powered
by this USB connection at 5 V DC with a 500 mA current limitation. USB disconnection
simulation can be implemented by disconnecting the 1.5 K pull-up resistor from USB+ line.
The USB disconnection simulation feature is enabled by setting JP14.
Table 10.
IrDA related jumpers
Jumper
Description
JP21
Enables/disables the IrDA transceiver.
IrDA is enabled when JP21 is fitted (default setting).
IrDA is disabled when JP21 is not fitted.
JP22
IrDA_RX is enabled when JP22 is closed.
I/O pin PC11 is data line 3 of the MicroSD Card when JP22 is open (default setting).
Table 11.
USB related jumpers
Jumper
Description
JP14
The USB 1.5K pull-up resistor is always connected to USB+ line when
JP14 is set as shown.
The USB 1.5K pull-up resistor can be disconnected by software from
USB+ line when JP14 is set as shown. In this case, the USB
connect/disconnect feature is managed by standard IO port PB14
(default setting).
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