User Manual

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Rev.1.2
2.1 TFT connection to MCU
TFT module is connected to MCU using SPI interface (it is also possible to set I2C as a main interface,
by changing SB1 – SB4 shorts). Figure 2 shows TFT connection diagram. For more information see
Riverdi B-series TFT panels datasheet and STM32F031C6 datasheet.
Figure 2. Connection TFT panel to MCU
2.2 Board programming
The Revelation Board is based on STM32F0 family MCU. Board can be programmed using
STMicroelectronics ST-Link. There is SWD connector (6-pin male header) on board which pins are
described on Table 1. ST-Link is not a part of Revelation Board.
Table 1. CN4 pinout
Pin number (CN4)
Pin name
1
VCC
2
SWCLK
3
GND
4
SWDIO
5
NRST
6
N/C
2.3 Power supply and current measurement
The Revelation Board is powered with 5V from micro USB plug. MCU power supply voltage is 3.3V
from internal voltage regulator. User can choose LCD TFT inverter backlight power supply by
selecting it on CN8 jumper (5V or 3.3V), see Figure 3. S2 button is a reset button connected to NRST
pin of MCU.