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| 型號(hào)： | MC68HC705C9ACFNE |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類(lèi)： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PQCC44 |
| 封裝： | PLASTIC, LCC-44 |
| 文件頁(yè)數(shù)： | 47/118頁(yè) |
| 文件大?。?/td> | 750K |
| 代理商： | MC68HC705C9ACFNE |
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Central Processor Unit (CPU)
MC68HC05C9A Advance Information Data Sheet, Rev. 4.1
34
Freescale Semiconductor
3.2.1 Accumulator (A)
The accumulator is a general-purpose 8-bit register used to hold operands and results of arithmetic
calculations or data manipulations.
3.2.2 Index Register (X)
The index register is an 8-bit register used for the indexed addressing value to create an effective
address. The index register may also be used as a temporary storage area.
3.2.3 Program Counter (PC)
The program counter is a 16-bit register that contains the address of the next byte to be fetched.
3.2.4 Stack Pointer (SP)
The stack pointer contains the address of the next free location on the stack. During an MCU reset or the
reset stack pointer (RSP) instruction, the stack pointer is set to location $0FF. The stack pointer is then
decremented as data is pushed onto the stack and incremented as data is pulled from the stack.
When accessing memory, the eight most significant bits are permanently set to 00000011. These eight
bits are appended to the six least significant register bits to produce an address within the range of $00FF
to $00C0. Subroutines and interrupts may use up to 64 (decimal) locations. If 64 locations are exceeded,
the stack pointer wraps around and loses the previously stored information. A subroutine call occupies
two locations on the stack; an interrupt uses five locations.
3.2.5 Condition Code Register (CCR)
The CCR is a 5-bit register in which four bits are used to indicate the results of the instruction just
executed, and the fifth bit indicates whether interrupts are masked. These bits can be individually tested
by a program, and specific actions can be taken as a result of their state. Each bit is explained in the
following paragraphs.
Half Carry (H)
This bit is set during ADD and ADC operations to indicate that a carry occurred between bits 3 and 4.
Interrupt (I)
When this bit is set, the timer, SCI, SPI, and external interrupt are masked (disabled). If an interrupt
occurs while this bit is set, the interrupt is latched and processed as soon as the interrupt bit is cleared.
Negative (N)
When set, this bit indicates that the result of the last arithmetic, logical, or data manipulation was
negative.
Zero (Z)
When set, this bit indicates that the result of the last arithmetic, logical, or data manipulation was zero.
Carry/Borrow (C)
When set, this bit indicates that a carry or borrow out of the arithmetic logical unit (ALU) occurred
during the last arithmetic operation. This bit is also affected during bit test and branch instructions and
during shifts and rotates.
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相關(guān)代理商/技術(shù)參數(shù) |
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| MC68HC705C9ACP | 功能描述:IC MCU 2.1MHZ 16K OTP 40-DIP RoHS:否 類(lèi)別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:HC05 其它有關(guān)文件:STM32F101T8 View All Specifications 特色產(chǎn)品:STM32 32-bit Cortex MCUs 標(biāo)準(zhǔn)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(shè)備:DMA，PDR，POR，PVD，PWM，溫度傳感器，WDT 輸入/輸出數(shù):26 程序存儲(chǔ)器容量:64KB（64K x 8） 程序存儲(chǔ)器類(lèi)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(pán) 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(chēng):497-9032STM32F101T8U6-ND |
| MC68HC705C9ACPE | 制造商:Freescale Semiconductor 功能描述: |
| MC68HC705C9AFNE | 功能描述:8位微控制器 -MCU 8B MCU 352 BYTES 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 |
| MC68HC705C9AVFNE | 功能描述:8位微控制器 -MCU 8B MCU 352 BYTES 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 |
| MC68HC705E6CDW | 制造商:Motorola Inc 功能描述: 制造商:MOTOROLA 功能描述: |
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