Hi All,
I attach a file.
That is schematics ; 5 ports of OLED Display(3.3V I/O) connect to MCU(1.8V I/O) using TXB0104YZTR & LSF0101DRYR.
Refer Nets of that schematics, below this
+3.2V : 3.2V / 100mA => Power Source of OLED Display
VDD_S : 1.8V/200mA => Power Source of MCU
/OLED_RST' : GPIO port of OLED Display
OLED_SPI_MOSI' : SPI MOSI port of OLED Display
OLED_SPI_CLK' : SPI CLK port of OLED Display
OLED_DC' : GPIO port of OLED Display
OLED_SPI_CS' : SPI CS port of OLED Display
/OLED_RST : GPIO port of MCU
OLED_SPI_MOSI : SPI MOSI port of MCU
OLED_SPI_CLK : SPI CLK port of MCU
OLED_DC : GPIO port of MCU
OLED_SPI_CS : SPI CS port of MCU
That is for Wearable Device.
Review my schematics , ASAP.
Best Regards,
Inho Jeon.
