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參數(shù)資料
| 型號： | AT91SAM9N12-EK |
| 廠商： | Atmel |
| 文件頁數(shù)： | 20/27頁 |
| 文件大?。?/td> | 0K |
| 描述： | EVAL KIT FOR SAM9N12 |
| 設(shè)計資源： | AT91SAM9N12-EK Design & Mfg Files SAM9N12-EK Design & Mfg File Information |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 類型： | MCU |
| 適用于相關(guān)產(chǎn)品： | ATSAM9N12 |
| 所含物品： | 板 |
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11096AS–ATARM–4-Oct-11
SAM9N12
9.
Embedded Peripherals
9.1
Advanced Interrupt Controller (AIC)
Controls the interrupt lines (nIRQ and nFIQ) of the ARM Processor
Thirty-two individually maskable and vectored interrupt sources
– Source 0 is reserved for the Fast Interrupt Input (FIQ)
– Source 1 is reserved for system peripherals (PIT, RTT, PMC, DBGU, PMECC, etc.)
– Programmable Edge-triggered or Level-sensitive Internal Sources
– Programmable Positive/Negative Edge-triggered or High/Low Level-sensitive
One External Sources plus the Fast Interrupt signal
8-level Priority Controller
– Drives the Normal Interrupt of the processor
– Handles priority of the interrupt sources 1 to 31
– Higher priority interrupts can be served during service of lower priority interrupt
Vectoring
– Optimizes Interrupt Service Routine Branch and Execution
– One 32-bit Vector Register per interrupt source
– Interrupt Vector Register reads the corresponding current Interrupt Vector
Protect Mode
– Easy debugging by preventing automatic operations when protect models are
enabled
Fast Forcing
– Permits redirecting any normal interrupt source on the Fast Interrupt of the
processor
9.2
Reset Controller (RSTC)
Manages All Resets of the System, Including
– External Devices Through the NRST Pin
– Processor Reset
– Peripheral Set Reset
Based on 2 Embedded Power-on Reset Cells
Reset Source Status
– Status of the Last Reset
– Either Power-up Reset, Software Reset, User Reset, Watchdog Reset
External Reset Signal Shaping
AMBA
-compliant Interface
– Interfaces to the ARM Advanced Peripheral Bus
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