RA8825 Datasheet | RAIO Technology

Description The RA8825 is a Dot-Matrix LCD Driver. The embedded 528Byte display RAM supports up to 128x33 dots LCD panel. The RA8825 also provides a scrolling buffer memory for scrolling functions. It supports up, down, left and right scrolling features , and all of the scrolling functions are execute by hardware. The RA8825 integrates many powerful hardware that including Contrast adjustment, 4x5 Key-Scan, eight General Purpose I/O and EL Backlight signals for EL driver. The RA8825 is a high integration chip of LCD Controller. It reduce a lot of time for system develop, and save much cost for hardware system that due to it provides many features for related LCD display application. .. 2. Feature Eight General Purpose I/O Built-in 4x5 Key Scan Circuit Support Horizontal/Vertical Scrolling Functions Provide Signals for EL Driver Provide 32-Steps Contrast Adjust Build-in RC Oscillator Voltage Operation : 2.6~3.6V Package : Gold Bump Die Support 8080/6800 8/4-bit Parallel Interface and 3-wire/4-wire Serial Interface Support Maximum 128Seg x 33 LCD Panel. Built-in 528 Bytes Display RAM and 354Byte Scrolling Buffer Built-in 2X~3X(Voltage Booster), Voltage Regulator, Voltage Follower Support 1/33 Duty, 1/6~1/4 Bias Panel 3. System Block Diagram MPU LCD Panel GPIO EL Back Light Driver 4x5 Key Scan 4. Pad and Package Icon 128x32 RA8825 FPC #N #1 COG Module RAi O TECHNOLOGY INC. 2/6 .raio..tw 5 6 7 8 9 10 11 12 13 14 15 3 4 5 6 7 8 9 10 11 1 2 .. Logo DB[0:7] TEST[2..0] WR(R/W) RD(EN) D/C(RS) KIN[4..0] KST[3..0] IO[7..0] EL_DCHG EL_CHRG EXT_CLK INT CLK_SEL CS C86 BIT4 P/S P1 Preliminary Version 1.1 FG S[1:0] RAi O TECHNOLOGY INC. VLCD VLCD VLCD VLCD VLCD VLCD C2M C2M C2P C2P C1M C1M C1P C1P GNDP GNDP GND GND GND GND VDD VDD VDD VDDP 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 S1 FG S0 36 37 38 39 40 41 42 43 44 V1 V1 V2 V2 V2 V2 V3 V3 V3 V3 V4 V4 V4 V4 VREF VREF GND VDD 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59...