RA8870 Character/Graphic TFT LCD Controller RA8870 Demo Kit (Front) RA8870 Demo Kit (Back) RA8870 Character/Graphic TFT LCD Controller RA8870 Demo PCB(Bare) Hi-Speed 8051 MCU Board(Bare) for RA88 Series RA8870 Character/Graphic TFT LCD Controller CN1 J3 U5 U6 8-Bit MCU I/F External SRAM External Font ROM TFT LCD Module Connector (1) Header 12x2 CN2 IC1 J6 16-Bit MCU I/F Header 15x2 DC Input TFT LCD Module Connector (2) RA8870 U1 U2 5V Regulator 3V Regulator J21 J2 5-wires TP I/F 4-wires TP I/F J7 LCD I/F To RA8870 U4 Booster LED Back-Light (For LCD Module) U3 3V Regulator To LCD Module 應用電路的方塊圖 Header 17x2 RA8870 Character/Graphic TFT LCD Controller 應用電路（一）- 電源 RA8870 Character/Graphic TFT LCD Controller 應用電路（二）- RA8870 RA8870 Character/Graphic TFT LCD Controller 應用電路（三）- 外部記憶體 RA8870 Character/Graphic TFT LCD Controller 應用電路（四）- MCU 與 LCD 面板介面 RA8870 Schematic & Description for each Block Power: U1(MC7805BT)：3-Terminal Positive Voltage Regulator (7.0Vdc ≦ Vin 10.0Vdc ; Vout : 5V ) U2、U3 (AMS1117-3.3)：3-Terminal Positive Voltage Regulator (Vin : 5V ; Vout : 3.3V ) DC1：The DC jack (DC1) is connected to external DC Adaptor(the range is 7V~10V ) Backlight driver: RA8870 IC1:RA8870(LQFP-128) FLASH And SRAM 8bit MCU Interface(J3): PIN SYMBOL 1 2 3 4 3.3V 3.3V GND GND 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 NC MCU_DB7 NC MCU_DB6 MCU_WAIT MCU_DB5 MCU_CS MCU_DB4 MCU_RS MCU_DB3 MCU_RD MCU_DB2 MCU_WR MCU_DB1 MCU_INT MCU_DB0 MCU_RST LCD_SCL LCD_CS LCD_SDI FUNCTION Power Power Ground Ground Data bus Data bus Wait Signal Output Data bus Chip Select Input Data bus Command / Data Select Input Data bus Enable/Read Enable Data bus Write/Read-Write Data bus Interrupt Signal Output Data bus Reset Signal Input LCD SCL signal LCD CS signal LCD SDI signal 16bit MCU Interface(J6): PIN SYMBOL 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 MCU_DB0 MCU_DB8 MCU_DB1 MCU_DB9 MCU_DB2 MCU_DB10 MCU_DB3 MCU_DB11 MCU_DB4 MCU_DB12 MCU_DB5 MCU_DB13 MCU_DB6 MCU_DB14 MCU_DB7 MCU_DB15 MCU_CS MCU_RS MCU_RD MCU_WR MCU_WAIT LCD_INT NC LCD_RST 3.3V 3.3V GND GND GND GND FUNCTION Data bus Data bus Data bus Data bus Data bus Data bus Data bus Data bus Data bus Data bus Data bus Data bus Data bus Data bus Data bus Data bus Chip Select Input Command / Data Select Input Enable/Read Enable Write/Read-Write Wait Signal Output Interrupt Signal Output Reset Signal Input Power Power Ground Ground Ground Ground LCD Interface (J7): PIN SYMBOL 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 PDAT0 PDAT1 PDAT2 PDAT3 PDAT4 PDAT5 PDAT6 PDAT7 PDAT8 PDAT9 PDAT10 PDAT11 PDAT12 PDAT13 PDAT14 PDAT15 HSYNC VSYNC PCLK DE GPIO0 GPIO1 GPIO2 GPIO3 GPIO4 GPIO5 NC NC FUNCTION Data bus Data bus Data bus Data bus Data bus Data bus Data bus Data bus Data bus Data bus Data bus Data bus Data bus Data bus Data bus Data bus HSYNC Pulse VSYNC Pulse Pixel Clock Data Enable General Purpose I/O General Purpose I/O General Purpose I/O General Purpose I/O General Purpose I/O General Purpose I/O - 29 30 31 32 33 34 VLED+ 3.3V VLED5.0V GND GND Backlight power supply pin（+） Power Backlight power supply pin（－） Power Ground Ground