MC81F4x16
7.17 Sub Oscillation Stabilization Time ............................................................................................45
7.18 Operating Voltage Range .........................................................................................................46
7.19 Typical Characteristics..............................................................................................................47
8. ROM OPTION...................................................................................................................................51
8.1 Rom Option.................................................................................................................................51
8.2 Read Timing................................................................................................................................52
9. MEMORY ORGANIZATION..............................................................................................................53
9.1 Registers.....................................................................................................................................53
9.2 Program Memory........................................................................................................................56
9.3 Data Memory ..............................................................................................................................59
9.4 User Memory ..............................................................................................................................59
9.5 Stack Area ..................................................................................................................................60
9.6 Control Registers ( SFR ) ...........................................................................................................60
9.7 Addressing modes......................................................................................................................65
10. I/O PORTS......................................................................................................................................72
10.1 R0 Port Registers .....................................................................................................................74
10.2 R1 Port Registers .....................................................................................................................78
10.3 R2 Port Registers .....................................................................................................................82
10.4 R3 Port Registers .....................................................................................................................85
10.5 R4 Port Registers .....................................................................................................................87
10.6 R5 Port......................................................................................................................................89
11. INTERRUTP CONTROLLER..........................................................................................................90
11.1 Registers...................................................................................................................................91
11.2 Interrupt Sequence ...................................................................................................................96
11.3 BRK Interrupt ............................................................................................................................98
11.4 Shared Interrupt Vector ............................................................................................................98
11.5 Multi Interrupt............................................................................................................................99
11.6 Interrupt Vector & Priority Table .............................................................................................100
12. EXTERNAL INTERRUPTS...........................................................................................................101
12.1 Registers.................................................................................................................................101
12.2 Procedure ...............................................................................................................................104
13. CLOCK GENERATOR..................................................................................................................105
13.1 Registers.................................................................................................................................106
14. OSCILLATION CIRCUITS ............................................................................................................107
14.1 Main Oscillation Circuits .........................................................................................................107
14.2 Sub Oscillation Circuits...........................................................................................................108
14.3 PCB Layout.............................................................................................................................109
15. BASIC INTERVAL TIMER.............................................................................................................110
15.1 Registers.................................................................................................................................111
16. WATCH DOG TIMER....................................................................................................................112
16.1 Registers.................................................................................................................................113
17. WATCH TIMER.............................................................................................................................114
17.1 Registers.................................................................................................................................115
18. Timer 0/1.......................................................................................................................................116
18.1 Registers.................................................................................................................................116
18.2 Timer 0 8-Bit Mode .................................................................................................................120
18.3 Timer 1 8-Bit Mode .................................................................................................................122
18.4 Timer 0 16-BIT Mode..............................................................................................................124
October 19, 2009 Ver.1.35
7
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