RA8835A
Version 1.0
Dot Matrix LCD Controller
Chapter
Contents
Pages
1. Overview .........................................................................................................6
2. Features ..........................................................................................................6
3. Block Diagram................................................................................................6
4. Package ..........................................................................................................7
5. Pin Descriptions.............................................................................................7
5-1 Pin Functions ................................................................................................................7
5-1-1 MCU Interface .......................................................................................................................................7
5-1-2 Display Memory Control ......................................................................................................................8
5-1-3 LCD Drive Signals ................................................................................................................................9
5-1-4 Oscillator and Power............................................................................................................................9
5-2 RA8835A Pin Summary...............................................................................................10
6. Instruction Set..............................................................................................11
6-1 The Command Set.......................................................................................................11
6-2 System Control Commands .......................................................................................12
6-2-1 SYSTEM SET...................................................................................................................................... 12
6-2-2 SLEEP IN ............................................................................................................................................ 20
6-3 Display Control Commands .......................................................................................21
6-3-1 DISP ON/OFF...................................................................................................................................... 21
6-3-2 SCROLL.............................................................................................................................................. 23
6-3-3 CSRFORM .......................................................................................................................................... 27
6-3-4 CSRDIR............................................................................................................................................... 28
6-3-5 OVLAY ................................................................................................................................................ 29
6-3-6 CGRAM ADR ...................................................................................................................................... 30
6-3-7 HDOT SCR.......................................................................................................................................... 31
6-4 Drawing Control Commands......................................................................................32
6-4-1 CSRW.................................................................................................................................................. 32
6-4-2 CSRR .................................................................................................................................................. 32
6-5 Memory Control Commands ......................................................................................33
6-5-1 MWRITE .............................................................................................................................................. 33
6-5-2 MREAD ............................................................................................................................................... 33
7. Functions Description .................................................................................34
7-1 MCU Bus Interface ......................................................................................................34
7-1-1 8080 Series......................................................................................................................................... 34
7-1-2 6800 Series......................................................................................................................................... 34
7-2 MCU Synchronization .................................................................................................34
7-2-1 Display Status Indication Output..................................................................................................... 34
7-2-2 Internal Register Access .................................................................................................................. 35
7-2-3 Display Memory Access ................................................................................................................... 35
7-3 MCU Interface Examples ............................................................................................36
7-3-1 Z80 to RA8835A Interface ................................................................................................................. 36
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