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BOARD LAYOUT
POWER SUPPLY CIRCUIT
STM32-P107 can be powered from:
– PWR JACK connector, where (6.5-9.0)V DC or 6.0V AC is applied from an
external power source
– USB OTG connector; 5V voltage is provided via a mini USB cable
– JTAG connector; 5V voltage is provided by a compatible third party tool
The programmed board power consumption is about 70 mA.
RESET CIRCUIT
STM32-P107 reset circuit includes JTAG connector pin 15, U2 (STE101P) pin 28 (RESET), R73 (10k),
R74 (330Ohm), R75 (100Ohm/1%), C55 (100nF), STM32F107 pin 14 (NRST) and RESET button.
CLOCK CIRCUIT
Quartz crystal 25 MHz is connected to STM32F107 pin 12 (OSC_IN) and pin 13 (OSC_OUT).
Quartz crystal 32.768kHz is connected to STM32F107 pin 8 (PC14/OSC32_IN) and pin 9
(PC15/OSC32_OUT).
Page 9 of 23
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