μ
PD17072,17073
8
CONTENTS
1.
PIN FUNCTION.................................................................................................................................. 12
1.1
Pin Function List ...................................................................................................................................... 12
1.2
Equivalent Circuits of Pins....................................................................................................................... 15
1.3
Processing of Unused Pins ..................................................................................................................... 18
1.4
Notes on Using CE Pin............................................................................................................................ 19
2.
PROGRAM MEMORY (ROM) ........................................................................................................... 20
2.1
General..................................................................................................................................................... 20
2.2
Program Memory ..................................................................................................................................... 21
2.3
Program Counter...................................................................................................................................... 21
2.4
Execution Flow of Program Memory....................................................................................................... 22
2.5
Notes on Using Program Memory........................................................................................................... 22
3.
ADDRESS STACK (ASK) ................................................................................................................. 23
3.1
General..................................................................................................................................................... 23
3.2
Address Stack Register (ASR)................................................................................................................ 23
3.3
Stack Pointer (SP) ................................................................................................................................... 24
3.4
Operations of Address Stack................................................................................................................... 25
3.5
Notes on Using Address Stack................................................................................................................ 25
4.
DATA MEMORY (RAM) ..................................................................................................................... 26
4.1
General..................................................................................................................................................... 26
4.2
Configuration and Function of Data Memory.......................................................................................... 27
4.3
Addressing Data Memory ........................................................................................................................ 30
4.4
Notes on Using Data Memory ................................................................................................................. 31
5.
SYSTEM REGISTER (SYSREG) ...................................................................................................... 32
5.1
General..................................................................................................................................................... 32
5.2
Address Register (AR)............................................................................................................................. 33
5.3
Bank Register (BANK) ............................................................................................................................. 35
5.4
Program Status Word (PSWORD) .......................................................................................................... 36
5.5
Notes on Using System Register ............................................................................................................ 37
6.
GENERAL REGISTERS (GR)........................................................................................................... 38
6.1
Outline of General Registers ................................................................................................................... 38
6.2
Address Creation of General Register with Each Instruction ................................................................ 39
6.3
Notes on Using General Register ........................................................................................................... 39
7. ALU (ARITHMETIC LOGIC UNIT) BLOCK ....................................................................................... 40
7.1
General..................................................................................................................................................... 40
7.2
Configuration and Function of Each Block ............................................................................................. 41
7.3
ALU Processing Instructions ................................................................................................................... 41
7.4
Notes on Using ALU ................................................................................................................................ 44