BH67F2142
Ultra-Low Voltage R to F LCD Flash MCU
Compact Type TM – CTM ...................................................................................50
Compact Type TM Operation......................................................................................................51
Compact Type TM Register Description......................................................................................51
Compact Type TM Operating Modes ..........................................................................................55
R to F Type A/D Converter .................................................................................61
R to F A/D Converter Register Description .................................................................................61
Timer/Event Counter...................................................................................................................63
RC Type A/D Converter Mode.....................................................................................................64
TMRAL/TMRAH/TMRBL/TMRBH Reload Considerations..........................................................68
EL Carrier Output........................................................................................................................68
Interrupts.............................................................................................................70
Interrupt Registers.......................................................................................................................70
Interrupt Operation......................................................................................................................73
External Interrupts.......................................................................................................................74
R to F Timer Interrupt..................................................................................................................74
Timer Module Interrupts..............................................................................................................75
LVD Interrupt...............................................................................................................................75
Time Base Interrupts...................................................................................................................75
EEPROM Write Interrupt.............................................................................................................77
Interrupt Wake-up Function.........................................................................................................77
Programming Considerations......................................................................................................77
LCD Driver...........................................................................................................78
LCD Display Memory ..................................................................................................................78
LCD Clock Source.......................................................................................................................79
LCD Registers.............................................................................................................................79
LCD Voltage Source and Biasing................................................................................................80
LCD Reset Function....................................................................................................................81
LCD Driver Output.......................................................................................................................81
Programming Considerations......................................................................................................85
Low Voltage Detector – LVD ..............................................................................86
LVD Register...............................................................................................................................86
LVD Operation.............................................................................................................................87
Configuration Option..........................................................................................87
Application Circuits............................................................................................88
Instruction Set.....................................................................................................89
Introduction .................................................................................................................................89
Instruction Timing........................................................................................................................89
Moving and Transferring Data.....................................................................................................89
Arithmetic Operations..................................................................................................................89
Logical and Rotate Operation .....................................................................................................90
Branches and Control Transfer ...................................................................................................90
Bit Operations .............................................................................................................................90
Table Read Operations ...............................................................................................................90
Other Operations.........................................................................................................................90
Rev. 1.20
4
November 15, 2023