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Functional description of the evaluation board
UM1590
Doc ID 023892 Rev 1
1.2 Clocking
Two clock sources are available on the STM32303C-EVAL evaluation board:
●
32 KHz crystal for embedded RTC
●
8 MHz crystal for the STM32F30x/31x main clock system
1.3 Reset
control
The reset can be generated by hardware or software:
●
Reset button: activates the RESET input when pressed
●
JTAG reset
1.4 Debug
JTAG
interface
Software debug is done via the standard ARM
®
JTAG connection: 20-pin IDC (insulation
displacement connector) for connection to the standard ARM host interface.
1.5
Serial wire debugger interface
The Serial Wire Debug Port (SWD-DP) provides a 2-pin (clock + data) interface to the AHP-
AP port.
1.6 Embedded
ST-LINK
An ST-LINK is integrated on the board as an embedded in-circuit debugger and programmer
for the STM32F30x/31x MCU.
1.7 Display
devices
1.7.1 LCD
A TFT color LCD module is mounted on the STM32303C-EVAL board. It is interfaced
through the embedded SPI peripheral.
1.7.2 LEDs
Four general-purpose LEDs are available. They are used as a display.
1.7.3 LDR
(Light
Dependent Resistor)
The V
DDA
supply is divided by a resistor bridge of LDR VT9ON1 and 8.2 K
Ω
resistor and
connected to PA0.