參數(shù)資料
型號: MC68HC705G4
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 1 MHz, MICROCONTROLLER, PQFP80
封裝: QFP-80
文件頁數(shù): 68/128頁
文件大?。?/td> 290K
代理商: MC68HC705G4
Page 34
MOTOROLA
Section 4: CPU CORE
MC68HC05G3 (705G4) Specification Rev. 1.1
4.1.4
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
$00FF. The stack pointer then is decremented as data is pushed onto the stack and
incremented as data is pulled from the stack.
When accessing memory, the 10 most significant bits are permanently set to 0000000011.
These 10 bits are appended to the six least significant 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. See Figure 4-2: Stacking Order.
Figure 4-2: Stacking Order
NOTE:
Since the stack pointer decrements during pushes, the PCL is stacked
first, followed by PCH, etc. Pulling from the stack is in the reverse order.
4.1.5
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 tested individually by a program, and specific actions can be taken as a result
of their state. Each bit is explained in the following paragraphs.
4.1.6
HALF CARRY (H)
This bit is set during ADD and ADC operations to indicate that a carry occurred between
bits 3 and 4.
4.1.6.1
INTERRUPT (I)
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.
Index Register
PCL
Accumulator
Condition Code Register
PCH
11
1
70
Stack
I
N
T
E
R
U
P
T
Decreasing
Unstack
R
E
T
U
R
N
Increasing
Memory
Addresses
Memory
Addresses
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68HC705J1A 制造商:Freescale Semiconductor 功能描述:
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MC68HC705J1ACP 功能描述:IC MCU 4MHZ 1.2K OTP 20-DIP RoHS:否 類別: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
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MC68HC705J2CDW 制造商:Motorola Inc 功能描述: 制造商:Motorola Inc 功能描述:MicroController, 8-Bit, 20 Pin, Plastic, SOP