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| 型號： | COP8SGR728Q3XXX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, UVPROM, MICROCONTROLLER, CDIP28 |
| 封裝： | WINDOWED, DIP-28 |
| 文件頁數(shù)： | 42/62頁 |
| 文件大小： | 840K |
| 代理商： | COP8SGR728Q3XXX |
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14.0 Instruction Set
14.1 INTRODUCTION
This section defines the instruction set of the COPSAx7
Family members. It contains information about the instruc-
tion set features, addressing modes and types.
14.2 INSTRUCTION FEATURES
The strength of the instruction set is based on the following
features:
Mostly single-byte opcode instructions minimize program
size.
One instruction cycle for the majority of single-byte in-
structions to minimize program execution time.
Many single-byte, multiple function instructions such as
DRSZ.
Three memory mapped pointers: two for register indirect
addressing, and one for the software stack.
Sixteen memory mapped registers that allow an opti-
mized implementation of certain instructions.
Ability to set, reset, and test any individual bit in data
memory address space, including the memory-mapped
I/O ports and registers.
Register-Indirect LOAD and EXCHANGE instructions
with optional automatic post-incrementing or decrement-
ing of the register pointer. This allows for greater effi-
ciency (both in cycle time and program code) in loading,
walking across and processing fields in data memory.
Unique instructions to optimize program size and
throughput efficiency. Some of these instructions are
DRSZ, IFBNE, DCOR, RETSK, VIS and RRC.
14.3 ADDRESSING MODES
The instruction set offers a variety of methods for specifying
memory addresses. Each method is called an addressing
mode. These modes are classified into two categories: op-
erand addressing modes and transfer-of-control addressing
modes. Operand addressing modes are the various meth-
ods of specifying an address for accessing (reading or writ-
ing) data. Transfer-of-control addressing modes are used in
conjunction with jump instructions to control the execution
sequence of the software program.
14.3.1 Operand Addressing Modes
The operand of an instruction specifies what memory loca-
tion is to be affected by that instruction. Several different
operand addressing modes are available, allowing memory
locations to be specified in a variety of ways. An instruction
can specify an address directly by supplying the specific
address, or indirectly by specifying a register pointer. The
contents of the register (or in some cases, two registers)
point to the desired memory location. In the immediate
mode, the data byte to be used is contained in the instruction
itself.
Each addressing mode has its own advantages and disad-
vantages with respect to flexibility, execution speed, and
program compactness. Not all modes are available with all
instructions. The Load (LD) instruction offers the largest
number of addressing modes.
The available addressing modes are:
Direct
Register B or X Indirect
Register
B
or
X
Indirect
with
Post-Incrementing/
Decrementing
Immediate
Immediate Short
Indirect from Program Memory
The addressing modes are described below. Each descrip-
tion includes an example of an assembly language instruc-
tion using the described addressing mode.
Direct. The memory address is specified directly as a byte in
the instruction. In assembly language, the direct address is
written as a numerical value (or a label that has been defined
elsewhere in the program as a numerical value).
Example: Load Accumulator Memory Direct
LD A,05
Reg/Data
Contents
Memory
Before
After
Accumulator
XX Hex
A6 Hex
Memory Location
A6 Hex
0005 Hex
Register B or X Indirect. The memory address is specified
by the contents of the B Register or X register (pointer
register). In assembly language, the notation [B] or [X] speci-
fies which register serves as the pointer.
Example: Exchange Memory with Accumulator, B Indirect
X A,[B]
Reg/Data
Contents
Memory
Before
After
Accumulator
01 Hex
87 Hex
Memory Location
87 Hex
01 Hex
0005 Hex
B Pointer
05 Hex
Register B or X Indirect with Post-Incrementing/
Decrementing. The relevant memory address is specified
by the contents of the B Register or X register (pointer
register). The pointer register is automatically incremented
or decremented after execution, allowing easy manipulation
of memory blocks with software loops. In assembly lan-
guage, the notation [B+], [B], [X+], or [X] specifies which
register serves as the pointer, and whether the pointer is to
be incremented or decremented.
Example: Exchange Memory with Accumulator, B Indirect
with Post-Increment
X A,[B+]
Reg/Data
Contents
Memory
Before
After
Accumulator
03 Hex
62 Hex
Memory Location
62 Hex
03 Hex
0005 Hex
B Pointer
05 Hex
06 Hex
Intermediate. The data for the operation follows the instruc-
tion opcode in program memory. In assembly language, the
number sign character (#) indicates an immediate operand.
COP8SG
Family
www.national.com
47
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| COP8SGR740N8 | 功能描述:IC MCU 8BIT CMOS OTP 40DIP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:COP8™ 8SG 其它有關文件:STM32F101T8 View All Specifications 特色產(chǎn)品:STM32 32-bit Cortex MCUs 標準包裝:490 系列:STM32 F1 核心處理器:ARM? Cortex?-M3 芯體尺寸:32-位 速度:36MHz 連通性:I²C，IrDA，LIN，SPI，UART/USART 外圍設備:DMA，PDR，POR，PVD，PWM，溫度傳感器，WDT 輸入/輸出數(shù):26 程序存儲器容量:64KB（64K x 8） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:10K x 8 電壓 - 電源 (Vcc/Vdd):2 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 10x12b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:36-VFQFN，36-VFQFPN 包裝:托盤 配用:497-10030-ND - STARTER KIT FOR STM32497-8853-ND - BOARD DEMO STM32 UNIV USB-UUSCIKSDKSTM32-PL-ND - KIT IAR KICKSTART STM32 CORTEXM3497-8512-ND - KIT STARTER FOR STM32F10XE MCU497-8505-ND - KIT STARTER FOR STM32F10XE MCU497-8304-ND - KIT STM32 MOTOR DRIVER BLDC497-6438-ND - BOARD EVALUTION FOR STM32 512K497-6289-ND - KIT PERFORMANCE STICK FOR STM32MCBSTM32UME-ND - BOARD EVAL MCBSTM32 + ULINK-MEMCBSTM32U-ND - BOARD EVAL MCBSTM32 + ULINK2更多... 其它名稱:497-9032STM32F101T8U6-ND |
| COP8SGR740N8/NOPB | 制造商:Texas Instruments 功能描述: |
| COP8SGR744V8 | 功能描述:8位微控制器 -MCU RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT |
| COP8SGR744V8 | 制造商:Texas Instruments 功能描述:8BIT MCU OTP 32K 8SGR744 PLCC44 |
| COP8SGR744V8/63 | 功能描述:8位微控制器 -MCU RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT |
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