NEC PD789860 User Manual page 11

4.1.4 Data memory addressing ............................................................................................................ 42
4.2 Processor Registers .................................................................................................................. 44
4.2.1 Control registers .......................................................................................................................... 44
4.2.2 General-purpose registers........................................................................................................... 46
4.2.3 Special function registers (SFRs) ................................................................................................ 47
4.3 Instruction Address Addressing .............................................................................................. 49
4.3.1 Relative addressing..................................................................................................................... 49
4.3.2 Immediate addressing ................................................................................................................. 50
4.3.3 Table indirect addressing ............................................................................................................ 50
4.3.4 Register addressing .................................................................................................................... 51
4.4 Operand Address Addressing.................................................................................................. 52
4.4.1 Direct addressing ........................................................................................................................ 52
4.4.2 Short direct addressing ............................................................................................................... 53
4.4.3 Special function register (SFR) addressing ................................................................................. 54
4.4.4 Register addressing .................................................................................................................... 55
4.4.5 Register indirect addressing ........................................................................................................ 56
4.4.6 Based addressing........................................................................................................................ 57
4.4.7 Stack addressing......................................................................................................................... 57
CHAPTER 5 EEPROM (DATA MEMORY)............................................................................................ 58
5.1 Memory Space............................................................................................................................ 58
5.2 EEPROM Configuration............................................................................................................. 58
5.3 EEPROM Control Register ........................................................................................................ 58
5.4 Notes for EEPROM Writing ....................................................................................................... 61
CHAPTER 6 PORT FUNCTIONS........................................................................................................... 63
6.1 Port Functions............................................................................................................................ 63
6.2 Port Configuration ..................................................................................................................... 63
6.2.1 Port 0........................................................................................................................................... 64
6.2.2 Port 2........................................................................................................................................... 65
6.2.3 Port 4........................................................................................................................................... 66
6.3 Port Function Control Registers .............................................................................................. 67
6.4 Operation of Port Functions ..................................................................................................... 68
6.4.1 Writing to I/O port ........................................................................................................................ 68
6.4.2 Reading from I/O port.................................................................................................................. 68
6.4.3 Arithmetic operation of I/O port.................................................................................................... 68
CHAPTER 7 CLOCK GENERATOR (
7.1 Clock Generator Functions....................................................................................................... 69
7.2 Clock Generator Configuration ................................................................................................ 69
7.3 Clock Generator Control Register............................................................................................ 70
7.4 System Clock Oscillators.......................................................................................................... 71
7.4.1 System clock oscillator ................................................................................................................ 71
7.4.2 Examples of incorrect resonator connection................................................................................ 72
7.4.3 Frequency divider........................................................................................................................ 73
µ
PD789860 SUBSERIES) ....................................................... 69
User's Manual U14826EJ5V0UD
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