
ii
2.8 
Memory Map......................................................................................................................
2.8.1 
Memory Map........................................................................................................
Application Notes..............................................................................................................
2.9.1 
Notes on Data Access...........................................................................................
2.9.2 
Notes on Bit Manipulation....................................................................................
2.9.3 
Notes on Use of the EEPMOV Instruction...........................................................
45
45
48
48
50
56
2.9 
Section 3   Exception Handling
..........................................................................................
3.1 
Overview............................................................................................................................
3.2 
Reset...................................................................................................................................
3.2.1 
Overview...............................................................................................................
3.2.2 
Reset Sequence.....................................................................................................
3.2.3 
Interrupt Immediately after Reset.........................................................................
3.3 
Interrupts............................................................................................................................
3.3.1 
Overview...............................................................................................................
3.3.2 
Interrupt Control Registers ...................................................................................
3.3.3 
External Interrupts................................................................................................
3.3.4 
Internal Interrupts..................................................................................................
3.3.5 
Interrupt Operations..............................................................................................
3.3.6 
Interrupt Response Time.......................................................................................
3.4 
Application Notes..............................................................................................................
3.4.1 
Notes on Stack Area Use......................................................................................
3.4.2 
Notes on Rewriting Port Mode Registers.............................................................
3.4.3 
Interrupt Request Flag Clearing Method..............................................................
57
57
57
57
57
59
59
59
61
70
71
72
77
78
78
79
80
Section 4   Clock Pulse Generators
....................................................................................
4.1 
Overview............................................................................................................................
4.1.1 
Block Diagram......................................................................................................
4.1.2 
System Clock and Subclock..................................................................................
4.2 
System Clock Generator....................................................................................................
4.3 
Subclock Generator............................................................................................................
4.4 
Prescalers ...........................................................................................................................
4.5 
Note on Oscillators ............................................................................................................
4.5.1 
Definition of Oscillation Settling Standby Time..................................................
4.5.2 
Notes on Use of Crystal Oscillator Element
(Excluding Ceramic Oscillator Element)..............................................................
83
83
83
83
84
87
89
90
90
92
Section 5   Power-Down Modes
.........................................................................................
5.1 
Overview............................................................................................................................
5.1.1 
System Control Registers......................................................................................
5.2 
Sleep Mode........................................................................................................................ 101
5.2.1 
Transition to Sleep Mode...................................................................................... 101
5.2.2 
Clearing Sleep Mode ............................................................................................ 101
93
93
96