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| 型號(hào)： | MC9RS08KA1CDBR |
| 廠商： | Freescale Semiconductor |
| 文件頁(yè)數(shù)： | 95/136頁(yè) |
| 文件大小： | 0K |
| 描述： | IC CPU RS08 1K FLASH 62RAM 6-DFN |
| 產(chǎn)品培訓(xùn)模塊： | USBSpyder08 Discovery Kit MC9RS08KA8 Microcontroller |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 系列： | RS08 |
| 核心處理器： | RS08 |
| 芯體尺寸： | 8-位 |
| 速度： | 10MHz |
| 外圍設(shè)備： | LVD，POR，WDT |
| 輸入/輸出數(shù)： | 2 |
| 程序存儲(chǔ)器容量： | 1KB（1K x 8） |
| 程序存儲(chǔ)器類(lèi)型： | 閃存 |
| RAM 容量： | 63 x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 1.8 V ~ 5.5 V |
| 振蕩器型： | 內(nèi)部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 6-VDFN 裸露焊盤(pán) |
| 包裝： | 帶卷 (TR) |
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Chapter 8 Central Processor Unit (RS08CPUV1)
MC9RS08KA2 Series Data Sheet, Rev. 4
Freescale Semiconductor
61
8.2.7
Page Select Register (PAGESEL)
This 8-bit page select register allows the user to access all memory locations in the entire
16K-byte address space through a page window located from $00C0 to $00FF. This register
resides at the memory mapped location $001F.
For details on the PAGESEL register, please refer to
the RS08 Core Reference Manual.
8.3
Addressing Modes
Whenever the MCU reads information from memory or writes information into memory, an addressing
mode is used to determine the exact address where the information is read from or written to. This section
explains several addressing modes and how each is useful in different programming situations.
Every opcode tells the CPU to perform a certain operation in a certain way. Many instructions, such as load
accumulator (LDA), allow several different ways to specify the memory location to be operated on, and
each addressing mode variation requires a separate opcode. All of these variations use the same instruction
mnemonic, and the assembler knows which opcode to use based on the syntax and location of the operand
field. In some cases, special characters are used to indicate a specific addressing mode (such as the #
[pound] symbol, which indicates immediate addressing mode). In other cases, the value of the operand
tells the assembler which addressing mode to use. For example, the assembler chooses short addressing
mode instead of direct addressing mode if the operand address is from $0000 to $001F. Besides allowing
the assembler to choose the addressing mode based on the operand address, assembler directives can also
be used to force direct or tiny/short addressing mode by using the “>” or “<” prefix before the operand,
respectively.
Some instructions use more than one addressing mode. For example, the move instructions use one
addressing mode to access the source value from memory and a second addressing mode to access the
destination memory location. For these move instructions, both addressing modes are listed in the
documentation. All branch instructions use relative (REL) addressing mode to determine the destination
for the branch, but BRCLR, BRSET, CBEQ, and DBNZ also must access a memory operand. These
instructions are classified by the addressing mode used for the memory operand, and the relative
addressing mode for the branch offset is assumed.
The discussion in the following paragraphs includes how each addressing mode works and the syntax clues
that instruct the assembler to use a specific addressing mode.
8.3.1
Inherent Addressing Mode (INH)
This addressing mode is used when the CPU inherently knows everything it needs to complete the
instruction and no addressing information is supplied in the source code. Usually, the operands that the
CPU needs are located in the CPU’s internal registers, as in LSLA, CLRA, INCA, SLA, RTS, and others.
A few inherent instructions, including no operation (NOP) and background (BGND), have no operands.
8.3.2
Relative Addressing Mode (REL)
Relative addressing mode is used to specify the offset address for branch instructions relative to the
program counter. Typically, the programmer specifies the destination with a program label or an
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| MC9RS08KA1CPC | 功能描述:8位微控制器 -MCU 1K FLASH W/ ACMP 62 RAM 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(shí)鐘頻率:50 MHz 程序存儲(chǔ)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(fēng)格:SMD/SMT |
| MC9RS08KA1CSC | 功能描述:8位微控制器 -MCU 1K FLASH W/ ACMP 62 RAM 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(shí)鐘頻率:50 MHz 程序存儲(chǔ)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(fēng)格:SMD/SMT |
| MC9RS08KA1CSCR | 功能描述:8位微控制器 -MCU 1K FLASH W/ ACMP 62 RAM 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(shí)鐘頻率:50 MHz 程序存儲(chǔ)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(fēng)格:SMD/SMT |
| MC9RS08KA1DB | 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:Microcontrollers |
| MC9RS08KA1PC | 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:Microcontrollers |
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