STM32-103STK Olimex Ltd., STM32-103STK Datasheet - Page 10

• Manufacturer Part Number: STM32-103STK
• Description: MCU, MPU & DSP Development Tools STARTERKIT BRD FOR STM32F103RBT6
• Manufacturer: Olimex Ltd.

Specifications of STM32-103STK

• Processor To Be Evaluated: STM32F103RBT6
• Data Bus Width: 32 bit
• Interface Type: USB, CAN, I2C, JTAG, SPI, UART
• Dimensions: 90 mm x 65 mm
• Operating Supply Voltage: 1.5 V
• Silicon Manufacturer: ST Micro
• Core Architecture: ARM
• Core Sub-architecture: Cortex - M3
• Silicon Core Number: STM32
• Silicon Family Name: STM32F1xx
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 1701515 25R5111

POWER SUPPLY CIRCUIT:
RESET CIRCUIT:
CLOCK CIRCUIT:
JUMPER DESCRIPTION:
STM32-103STK can take power from these sources:
–
-
The board power consumption is: about 30 mA when powered from the
USB port and 130mA when powered from 1.5V battery with all peripherials
and MCU running at full speed, there are different power saving modes
which may put STM32F103RBT6 in power sleep mode and in these modes
the consumption of the MCU is only few microampers.
STM32-103STK reset circuit is made with RC group R8 - 10K and C28-
100nF.
Although on the schematic is made provision for external reset IC such is
not necessary as STM32 have build-in brown out detector. Manual reset is
possible by the RESET button.
Quartz crystal 8Mhz is connected to STM32F103RBT6. Internal PLL circuit
can multiply this frequency up to 72Mhz.
32.768 KHz quartz crystal is connected to STM32F103RBT6 for it’s internal
Real Time Clock.
EXT/BAT
R-T
BAT_E
–
1.5V battery with DC/DC step up converter
Vin signal on EXT1-11 pin.
JTAG pin.1 or 2
EXT position
Allow power supply from mini-USB connector or EXT1(pin11).
The voltage supplied to EXT1(pin 11) must be between 5VDC
and 9VDC.
BAT position
Allow power supply from 1.5V AA (R6), no charge battery,
pluged in the BAT connector.
Default state closed (shorten), Vbat signal is also available to
EXT1 (pin 1) connector, so if you want to connect external
backup battery to the STM32F103RBT6 this jumper should be
opened (unshorted) and the external battery to be connected to
EXT1 (pin 1) connector(see connector description for EXT1
connector pining.).VBAT accept 2 - 3.6V.
Connects JTAG TRST signal to STM32F103RBT6 RESET
Default state closed (shorted)
Connects 3.3V to STM32F103RBT6 Vbat pin.1
3 pin, power supply select jumper.
EXT/BAT
EXT/BAT