- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄3975 > 20-668-0003 (Rabbit Semiconductor)IC CPU RABBIT2000 30MHZ 100PQFP PDF資料下載
參數(shù)資料
| 型號(hào)： | 20-668-0003 |
| 廠商： | Rabbit Semiconductor |
| 文件頁(yè)數(shù)： | 166/228頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC CPU RABBIT2000 30MHZ 100PQFP |
| 標(biāo)準(zhǔn)包裝： | 66 |
| 系列： | Rabbit 2000 |
| 處理器類型： | Rabbit 2000 8-位 |
| 速度： | 30MHz |
| 電壓： | 2.7V，3V，3.3V，5V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 100-BQFP |
| 供應(yīng)商設(shè)備封裝： | 100-PQFP（14x20） |
| 包裝： | 托盤 |
| 其它名稱： | 20-668-0003-ND 316-1062 |
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)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)當(dāng)前第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)第185頁(yè)第186頁(yè)第187頁(yè)第188頁(yè)第189頁(yè)第190頁(yè)第191頁(yè)第192頁(yè)第193頁(yè)第194頁(yè)第195頁(yè)第196頁(yè)第197頁(yè)第198頁(yè)第199頁(yè)第200頁(yè)第201頁(yè)第202頁(yè)第203頁(yè)第204頁(yè)第205頁(yè)第206頁(yè)第207頁(yè)第208頁(yè)第209頁(yè)第210頁(yè)第211頁(yè)第212頁(yè)第213頁(yè)第214頁(yè)第215頁(yè)第216頁(yè)第217頁(yè)第218頁(yè)第219頁(yè)第220頁(yè)第221頁(yè)第222頁(yè)第223頁(yè)第224頁(yè)第225頁(yè)第226頁(yè)第227頁(yè)第228頁(yè)
36
Rabbit 2000 Microprocessor User’s Manual
the same priority, this introduces interrupt latency while the next routine is waiting for the
previous routine to allow more interrupts to take place. If a number of devices have inter-
rupt service routines, and all interrupts are of the same priority, then pending interrupts
can not take place until at least the interrupt service routine in progress is finished, or at
least until it changes the interrupt priority. As a rule of thumb, Rabbit Semiconductor
usually suggests that 100 s be allowed for interrupt latency on Z180-based controllers.
This can result if, for example, there are five active interrupt routines, and each turns off
the interrupts for at most 20 s.
The intention in the Rabbit is that most interrupting devices will use priority 1 level inter-
rupts. Devices that need extremely fast response to interrupts will use priority level 2 or 3
interrupts. Since code that runs at priority level 0 or 1 never disables level 2 and level 3
interrupts, these interrupts will take place within about 20 clocks, the length of the longest
instruction or longest sensible sequence of privileged instructions followed by an unprivi-
leged instruction. It is important that the user be careful not to overdisable interrupts in
critical code sections. The processor priority should not be raised above level 1 except in
carefully considered situations.
The effect of the processor priority on interrupts is shown in Table 3-1. The priority of the
interrupt is usually established by bits in an I/O control register associated with the hard-
ware that creates the interrupt. The 8-bit interrupt register (IP) holds the processor priority
in the least significant 2 bits. When an interrupt takes place, the IP register is shifted left 2
positions and the lower 2 bits are set to equal the priority of the interrupt that just took
place. This means that an interrupt service request (ISR) can only be interrupted by an
interrupt of higher priority (unless the priority is explicitly set lower by the programmer).
The IP register serves as a 4-word stack of 2-bit words to save and restore interrupt priori-
ties. It can be shifted right, restoring the previous priority by a special instruction (IPRES).
Since only the current processor priority and 3 previous priorities can be saved in the inter-
rupt register, instructions are also provided to PUSH and POP IP using the regular stack. A
new priority can be “pushed” into the IP register with special instructions (IPSET 0,
IPSET 1
, IPSET 2, IPSET 3).
Table 3-1. Effect of Processor Priorities on Interrupts
Processor
Priority
Effect on Interrupts
0
All interrupts, priority 1,2 and 3 take place after
execution of current non privileged instruction.
1
Only interrupts of priority 2 and 3 take place.
2
Only interrupts of priority 3 take place.
3
All interrupt are suppressed (except RST instruction).
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AMM36DRES | CONN EDGECARD 72POS .156 EYELET |
| FMC65DREN-S734 | CONN EDGECARD 130POS .100 EYELET |
| IDT7133LA20G | IC SRAM 32KBIT 20NS 68PGA |
| FMC65DREH-S734 | CONN EDGECARD 130POS .100 EYELET |
| EMC65DTEF | CONN EDGECARD 130POS .100 EYELET |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 20-668-0011 | 功能描述:微處理器 - MPU Rabbit 3000A LQFP Microprocessor RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:536 MHz 程序存儲(chǔ)器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324 |
| 20-668-0016 | 功能描述:微處理器 - MPU Rabbit 3000 TFBGA Microprocessor RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:536 MHz 程序存儲(chǔ)器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324 |
| 2066-8001-90 | 制造商:TE CONNECTIVITY 功能描述:RF COAXIAL PANEL MOUNT CONNECTOR |
| 20-668-0022 | 功能描述:微處理器 - MPU Rabbit 4000 LQFP Microprocessor RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:536 MHz 程序存儲(chǔ)器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324 |
| 20-668-0024 | 功能描述:微處理器 - MPU Rabbit 4000 LQFP Microprocessor RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:536 MHz 程序存儲(chǔ)器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。