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| 型号： | m789436 |
| 厂商： | NEC Corp. |
| 元件分类： | 8位微控制器 |
| 英文描述： | 8-Bit Single-Chip Microcontrollers |
| 中文描述： | 8位单芯片微控制器 |
| 文件页数： | 24/144页 |
| 文件大小： | 1378K |
| 代理商： | M789436 |
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12
User’s Manual U15075EJ1V0UM00
3.1.2
Internal data memory (internal high-speed RAM) space .............................................................. 54
3.1.3
Special function register (SFR) area............................................................................................. 54
3.1.4
Data memory addressing.............................................................................................................. 55
3.2
Processor Registers.................................................................................................................. 61
3.2.1
Control registers ........................................................................................................................... 61
3.2.2
General-purpose registers ............................................................................................................ 64
3.2.3
Special function registers (SFRs) ................................................................................................. 65
3.3
Instruction Address Addressing.............................................................................................. 68
3.3.1
Relative addressing ...................................................................................................................... 68
3.3.2
Immediate addressing .................................................................................................................. 69
3.3.3
Table indirect addressing ............................................................................................................. 70
3.3.4
Register addressing...................................................................................................................... 70
3.4
Operand Address Addressing.................................................................................................. 71
3.4.1
Direct addressing.......................................................................................................................... 71
3.4.2
Short direct addressing................................................................................................................. 72
3.4.3
Special function register (SFR) addressing .................................................................................. 73
3.4.4
Register addressing...................................................................................................................... 74
3.4.5
Register indirect addressing ......................................................................................................... 75
3.4.6
Based addressing ......................................................................................................................... 76
3.4.7
Stack addressing .......................................................................................................................... 76
CHAPTER 4 PORT FUNCTIONS........................................................................................................... 77
4.1
Port Functions ........................................................................................................................... 77
4.2
Port Configuration..................................................................................................................... 80
4.2.1
Port 0 ............................................................................................................................................ 81
4.2.2
Port 1 ............................................................................................................................................ 82
4.2.3
Port 2 ............................................................................................................................................ 83
4.2.4
Port 3 ............................................................................................................................................ 89
4.2.5
Port 5 ............................................................................................................................................ 91
4.2.6
Port 6 ............................................................................................................................................ 92
4.2.7
Port 7 ............................................................................................................................................ 93
4.2.8
Port 8 (
PD789426, 789436 Subseries only) ............................................................................... 94
4.2.9
Port 9 (
PD789426, 789436 Subseries only) ............................................................................... 95
4.3
Registers Controlling Port Function........................................................................................ 96
4.4
Port Function Operation ......................................................................................................... 102
4.4.1
Writing to I/O port........................................................................................................................ 102
4.4.2
Reading from I/O port ................................................................................................................. 102
4.4.3
Arithmetic operation of I/O port................................................................................................... 102
CHAPTER 5 CLOCK GENERATOR.................................................................................................... 103
5.1
Clock Generator Functions .................................................................................................... 103
5.2
Clock Generator Configuration .............................................................................................. 103
5.3
Registers Controlling Clock Generator ................................................................................. 105
5.4
System Clock Oscillators ....................................................................................................... 108
5.4.1
Main system clock oscillator ....................................................................................................... 108
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