
μ
PD705100
5
CONTENTS
1.
PIN FUNCTIONS ........................................................................................................................
1.1
Pin Functions .................................................................................................................................
7
7
2.
ADDRESS SPACE .....................................................................................................................
2.1
Memory Space................................................................................................................................
2.2
I/O Space.........................................................................................................................................
8
8
10
3.
32-BIT BUS MODE.....................................................................................................................
3.1
Relationship between External Accesses and Byte Enable Signals .....................................
13
13
4.
16-BIT BUS MODE.....................................................................................................................
4.1
16-Bit Bus Sizing ...........................................................................................................................
4.1.1
Byte/halfword access ....................................................................................................
4.1.2
Word access ...................................................................................................................
4.2
Relationship between External Access and Byte Enable Signals .........................................
14
14
14
15
16
5.
INTERRUPTS..............................................................................................................................
5.1
Maskable Interrupts.......................................................................................................................
5.2
Nonmaskable Interrupts ...............................................................................................................
5.3
Reset................................................................................................................................................
17
17
18
18
6.
CLOCK CONTROLLER .............................................................................................................
6.1
Operation Modes............................................................................................................................
6.1.1
Sleep mode .....................................................................................................................
6.1.2
Stop mode.......................................................................................................................
19
19
19
19
7.
INTERNAL MEMORY.................................................................................................................
20
8.
REGISTER SETS .......................................................................................................................
8.1
Program Register Set....................................................................................................................
8.1.1
General-purpose register set .......................................................................................
8.1.2
Program counter (PC) ...................................................................................................
8.2
System Register Set......................................................................................................................
21
21
21
22
23
9.
DATA SETS ................................................................................................................................
9.1
Data Types ......................................................................................................................................
9.1.1
Integers ...........................................................................................................................
9.1.2
Unsigned integers..........................................................................................................
9.2
Data Alignment...............................................................................................................................
24
24
25
25
25
10. ADDRESS SPACE .....................................................................................................................
10.1
Addressing Mode...........................................................................................................................
10.1.1
Instruction addresses ...................................................................................................
10.1.2
Operand addresses .......................................................................................................
26
27
27
28