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| 型號： | COP8SAC7SLB8 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-Bit CMOS ROM Based and One-Time Programmable OTP Microcontroller with 1k to 4k Memory, Power On Reset, and Very Small Packaging |
| 中文描述： | 8-BIT, OTPROM, 10 MHz, MICROCONTROLLER, QCC28 |
| 封裝： | CSP-28 |
| 文件頁數(shù)： | 43/60頁 |
| 文件大?。?/td> | 787K |
| 代理商： | COP8SAC7SLB8 |
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13.0 Instruction Set
(Continued)
13.4.9 No-Operation Instruction
The no-operation instruction does nothing, except to occupy
space in the program memory and time in execution.
No-Operation (NOP)
Note:
The VIS is a special case of the Indirect Transfer of Control addressing
mode, where the double byte vector associated with the interrupt is
transferred from adjacent addresses in the program memory into the
program counter (PC) in order to jump to the associated interrupt ser-
vice routine.
13.5 REGISTER AND SYMBOL DEFINITION
The following abbreviations represent the nomenclature
used
in
the
instruction
description
cross-assembler.
and
the
COP8
Registers
A
B
X
SP
PC
PU
PL
C
HC
GIE
8-Bit Accumulator Register
8-Bit Address Register
8-Bit Address Register
8-Bit Stack Pointer Register
15-Bit Program Counter Register
Upper 7 Bits of PC
Lower 8 Bits of PC
1 Bit of PSW Register for Carry
1 Bit of PSW Register for Global Interrupt
Enable
Interrupt Vector Upper Byte
Interrupt Vector Lower Byte
VU
VL
Symbols
[B]
[X]
MD
Mem
Meml
Memory Indirectly Addressed by B Register
Memory Indirectly Addressed by X Register
Direct Addressed Memory
Direct Addressed Memory or [B]
Direct Addressed Memory or [B] or
Immediate Data
8-Bit Immediate Data
Register Memory: Addresses F0 to FF
(Includes B, X and SP)
Bit Number (0 to 7)
Loaded with
Exchanged with
Imm
Reg
Bit
←
www.national.com
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