User Manual

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Rev.1.2
Figure 3. Backlight power selection
z
Board also allows to measure two current values. The LCD current measure (FT8XX current + LCD TFT
current + Touch Panel (if mounted)) is available on CN3. The backlight current measure is available
on CN6. Before measure LCD current you should unsolder SB5, and before measure backlight current
you should unsolder SB6, see Figure 4.
Figure 4. Current measure method
2.4 User application
Revelation Board allows to build user own application on board. Unused pins of MCU are available on
two 5 pin male headers CN1 and CN2. See Table 2 for pin description.
Table 2. CN1 and CN2 pinout
Pin number (CN1)
Pin name
Pin number (CN2)
Pin name
1
PB3 (SPI1_SCK)
1
PB4 (SPI1_MISO)
2
GND
2
PB5 (SPI1_MOSI)
3
GND
3
PB6 (I2C1_SCL, USART1_TX)
4
3.3 V
4
PB7 (I2C1_SDA, USART1_RX)
5
3.3 V
5
PB8 (I2C1_SCL)
There is one general purpose button S1 connected to PB1 and one red LED D1 connected to PB2, see
Figure 5.