- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄45281 > MC908QT1MDWE (FREESCALE SEMICONDUCTOR INC) 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO8 PDF資料下載
參數(shù)資料
| 型號(hào)： | MC908QT1MDWE |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO8 |
| 封裝： | LEAD FREE, SOIC-8 |
| 文件頁(yè)數(shù)： | 12/184頁(yè) |
| 文件大?。?/td> | 1659K |
| 代理商： | MC908QT1MDWE |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)當(dāng)前第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)第71頁(yè)第72頁(yè)第73頁(yè)第74頁(yè)第75頁(yè)第76頁(yè)第77頁(yè)第78頁(yè)第79頁(yè)第80頁(yè)第81頁(yè)第82頁(yè)第83頁(yè)第84頁(yè)第85頁(yè)第86頁(yè)第87頁(yè)第88頁(yè)第89頁(yè)第90頁(yè)第91頁(yè)第92頁(yè)第93頁(yè)第94頁(yè)第95頁(yè)第96頁(yè)第97頁(yè)第98頁(yè)第99頁(yè)第100頁(yè)第101頁(yè)第102頁(yè)第103頁(yè)第104頁(yè)第105頁(yè)第106頁(yè)第107頁(yè)第108頁(yè)第109頁(yè)第110頁(yè)第111頁(yè)第112頁(yè)第113頁(yè)第114頁(yè)第115頁(yè)第116頁(yè)第117頁(yè)第118頁(yè)第119頁(yè)第120頁(yè)第121頁(yè)第122頁(yè)第123頁(yè)第124頁(yè)第125頁(yè)第126頁(yè)第127頁(yè)第128頁(yè)第129頁(yè)第130頁(yè)第131頁(yè)第132頁(yè)第133頁(yè)第134頁(yè)第135頁(yè)第136頁(yè)第137頁(yè)第138頁(yè)第139頁(yè)第140頁(yè)第141頁(yè)第142頁(yè)第143頁(yè)第144頁(yè)第145頁(yè)第146頁(yè)第147頁(yè)第148頁(yè)第149頁(yè)第150頁(yè)第151頁(yè)第152頁(yè)第153頁(yè)第154頁(yè)第155頁(yè)第156頁(yè)第157頁(yè)第158頁(yè)第159頁(yè)第160頁(yè)第161頁(yè)第162頁(yè)第163頁(yè)第164頁(yè)第165頁(yè)第166頁(yè)第167頁(yè)第168頁(yè)第169頁(yè)第170頁(yè)第171頁(yè)第172頁(yè)第173頁(yè)第174頁(yè)第175頁(yè)第176頁(yè)第177頁(yè)第178頁(yè)第179頁(yè)第180頁(yè)第181頁(yè)第182頁(yè)第183頁(yè)第184頁(yè)
Exception Control
MC68HC908QY/QT Family Data Sheet, Rev. 6
Freescale Semiconductor
109
13.5.2 SIM Counter During Stop Mode Recovery
The SIM counter also is used for stop mode recovery. The STOP instruction clears the SIM counter. After
an interrupt, break, or reset, the SIM senses the state of the short stop recovery bit, SSREC, in the
configuration register 1 (CONFIG1). If the SSREC bit is a 1, then the stop recovery is reduced from the
normal delay of 4096 BUSCLKX4 cycles down to 32 BUSCLKX4 cycles. This is ideal for applications
using canned oscillators that do not require long start-up times from stop mode. External crystal
applications should use the full stop recovery time, that is, with SSREC cleared in the configuration
register 1 (CONFIG1).
13.5.3 SIM Counter and Reset States
External reset has no effect on the SIM counter (see 13.7.2 Stop Mode for details.) The SIM counter is
free-running after all reset states. See 13.4.2 Active Resets from Internal Sources for counter control and
internal reset recovery sequences.
13.6 Exception Control
Normal sequential program execution can be changed in three different ways:
1.
Interrupts
a.
Maskable hardware CPU interrupts
b.
Non-maskable software interrupt instruction (SWI)
2.
Reset
3.
Break interrupts
13.6.1 Interrupts
An interrupt temporarily changes the sequence of program execution to respond to a particular event.
Figure 13-7 flow charts the handling of system interrupts.
Interrupts are latched, and arbitration is performed in the SIM at the start of interrupt processing. The
arbitration result is a constant that the CPU uses to determine which vector to fetch. Once an interrupt is
latched by the SIM, no other interrupt can take precedence, regardless of priority, until the latched
interrupt is serviced (or the I bit is cleared).
At the beginning of an interrupt, the CPU saves the CPU register contents on the stack and sets the
interrupt mask (I bit) to prevent additional interrupts. At the end of an interrupt, the RTI instruction recovers
the CPU register contents from the stack so that normal processing can resume. Figure 13-8 shows
interrupt entry timing. Figure 13-9 shows interrupt recovery timing.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MC908QY2CDWE | 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO16 |
| MC908QT2VFQE | 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO8 |
| MC908QT4MPE | 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDIP8 |
| MC908QY1VPE | 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDIP16 |
| MC908QT2CPE | 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDIP8 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC908QT1MFQE | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:M68HC08 Microcontrollers |
| MC908QT1MPE | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:M68HC08 Microcontrollers |
| MC908QT1PE | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:M68HC08 Microcontrollers |
| MC908QT1VDTE | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:M68HC08 Microcontrollers |
| MC908QT1VDWE | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontrollers |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。