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參數(shù)資料
| 型號： | MC68HCL05C8AB |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, MICROCONTROLLER, PDIP42 |
| 封裝： | PLASTIC, SDIP-42 |
| 文件頁數(shù)： | 38/116頁 |
| 文件大?。?/td> | 781K |
| 代理商： | MC68HCL05C8AB |
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Central Processor Unit (CPU)
MC68HC05C8A MC68HCL05C8A MC68HSC05C8A Data Sheet, Rev. 5.1
28
Freescale Semiconductor
3.2.1 Accumulator
The accumulator (A) shown in Figure 3-1 is a general-purpose 8-bit register used to hold operands and
results of arithmetic calculations or data manipulations.
3.2.2 Index Register
The index register (X) is an 8-bit register used by the indexed addressing value to create an effective
address. The index register also may be used as a temporary storage area.
3.2.3 Program Counter
The program counter (PC) is a 13-bit register that contains the address of the next byte to be fetched.
3.2.4 Stack Pointer
The stack pointer (SP) 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 $00FF. 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 seven most significant bits (MSB) are permanently set to 0000011. These
eight bits are appended to the six least significant register bits (LSB) 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
The condition code register (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
tested individually by a program, and specific actions can be taken as a result of their state. Each bit is
explained here.
H — Half Carry
This bit is set during ADD and ADC operations to indicate that a carry occurred between bits 3 and 4.
I — Interrupt
When this bit is set, the timer 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.
N — Negative
When set, this bit indicates that the result of the last arithmetic, logical, or data manipulation was
negative.
Z — Zero
When set, this bit indicates that the result of the last arithmetic, logical, or data manipulation was 0.
C — Carry/Borrow
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 also is affected during bit test and branch instructions and
during shifts and rotates.
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| MC68HCL05C8AFB | 8-BIT, MROM, MICROCONTROLLER, PQFP44 |
| MC68HC05C8AVFB | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP44 |
| MC68HSC05C8CFN | 8-BIT, MROM, 4.1 MHz, MICROCONTROLLER, PQCC44 |
| MC68HSC05C8CFB | 8-BIT, MROM, 4.1 MHz, MICROCONTROLLER, PQFP44 |
| MC68HC05C8APE | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP40 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| MC68HCP11A1CFN3 | 功能描述:8位微控制器 -MCU 8-bit HCMOS single chip 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(fēng)格:SMD/SMT |
| MC68HCP11A1FN | 制造商:MOTORALA 功能描述: |
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| MC68HCP11E0FN | 功能描述:MICROCONTROLLER MCU 8ADC 3MHC RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:HC11 標(biāo)準(zhǔn)包裝:250 系列:56F8xxx 核心處理器:56800E 芯體尺寸:16-位 速度:60MHz 連通性:CAN，SCI，SPI 外圍設(shè)備:POR，PWM，溫度傳感器，WDT 輸入/輸出數(shù):21 程序存儲器容量:40KB（20K x 16） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:6K x 16 電壓 - 電源 (Vcc/Vdd):2.25 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 6x12b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 125°C 封裝/外殼:48-LQFP 包裝:托盤 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323 |
| MC68HCP11E0FNE | 功能描述:8位微控制器 -MCU 8B MCU 512RAM COP A/D 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(fēng)格:SMD/SMT |
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