RA8835A 参数 Datasheet PDF下载

RA8835A

Version 1.0

Dot Matrix LCD Controller

7-3-2 6802 to RA8835A Interface ............................................................................................................... 36

7-4 Static RAM ...................................................................................................................37

7-5 Supply Current during Display Memory Access ......................................................37

7-6 Oscillator Circuit .........................................................................................................38

7-7 Status Flag...................................................................................................................38

7-8 Reset ............................................................................................................................40

7-9 Character Configuration.............................................................................................40

7-10 Screen Configuration................................................................................................41

7-10-1 Screen Configuration...................................................................................................................... 41

7-10-2 Display Address Scanning ............................................................................................................. 42

7-10-3 Display Scan Timing ....................................................................................................................... 44

7-11 Cursor Control...........................................................................................................45

7-11-1 Cursor Register Function ............................................................................................................... 45

7-11-2 Cursor Movement ............................................................................................................................ 45

7-11-3 Cursor Display Layers .................................................................................................................... 45

7-12 Memory to Display Relationship..............................................................................47

7-13 Scrolling.....................................................................................................................50

7-13-1 On-page Scrolling ........................................................................................................................... 50

7-13-2 Inter-page Scrolling......................................................................................................................... 50

7-13-3 Horizontal Scrolling ........................................................................................................................ 51

7-13-4 Bi-directional Scrolling ................................................................................................................... 51

7-13-5 Scroll Units....................................................................................................................................... 52

7-14 CG Characteristics....................................................................................................52

7-14-1 Internal Character Generator ......................................................................................................... 52

7-14-2 External Character Generator ROM............................................................................................... 52

7-14-3 Character Generator RAM .............................................................................................................. 52

7-15 CG Memory Allocation..............................................................................................53

7-16 Setting Character Generator Address.....................................................................54

7-16-1 M1 = 1................................................................................................................................................ 54

7-16-2 CG RAM Addressing Example ....................................................................................................... 55

7-17 Character Codes .......................................................................................................56

8. Application Notes ........................................................................................57

8-1 Initialization Parameters.............................................................................................57

8-1-1 System Set Instruction and Parameters ......................................................................................... 57

8-1-2 Initialization Example........................................................................................................................ 59

8-1-3 Display Mode Setting Example 1: combining text and graphics.................................................. 64

8-1-4 Display Mode Setting Example 2: combining graphics and graphics ......................................... 65

8-1-5 Display Mode Setting Example 3: combining three graphics layers ........................................... 66

8-2 System Overview ........................................................................................................68

8-3 System Interconnection .............................................................................................69

8-4 Smooth Horizontal Scrolling ......................................................................................71

8-5 Layered Display Attributes.........................................................................................72

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