參數(shù)資料
型號: AT91SAM9261-CJ
廠商: Atmel
文件頁數(shù): 19/44頁
文件大?。?/td> 0K
描述: IC ARM9 MPU 217BGA
標準包裝: 126
系列: AT91SAM
核心處理器: ARM9
芯體尺寸: 16/32-位
速度: 190MHz
連通性: EBI/EMI,I²C,MMC,SPI,SSC,UART/USART,USB
外圍設(shè)備: DMA,LCD,POR,PWM,WDT
輸入/輸出數(shù): 96
程序存儲器容量: 32KB(32K x 8)
程序存儲器類型: ROM
RAM 容量: 192K x 8
電壓 - 電源 (Vcc/Vdd): 1.08 V ~ 1.32 V
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 217-LFBGA
包裝: 托盤
配用: AT91SAM9261-EK-ND - KIT EVAL FOR AT91SAM926EJ-S
AT91SAM-ICE-ND - EMULATOR FOR AT91 ARM7/ARM9
其它名稱: AT91SAM9261B-CJ
AT91SAM9261B-CJ-ND
26
6062LS–ATARM–23-Mar-09
AT91SAM9261
9.10
Advanced Interrupt Controller
Controls the interrupt lines (nIRQ and nFIQ) of an 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, etc.)
– Source 2 to Source 31 control up to thirty embedded peripheral interrupts or external
interrupts
– Programmable edge-triggered or level-sensitive internal sources
– Programmable positive/negative edge-triggered or high/low level-sensitive
Four External Sources
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 mode is enabled
Fast Forcing
– Permits redirecting any normal interrupt source on the Fast Interrupt of the
processor
General Interrupt Mask
– Provides processor synchronization on events without triggering an interrupt
9.11
Debug Unit
Composed of four functions
–Two-pin UART
– Debug Communication Channel (DCC) support
– Chip ID Registers
– ICE Access Prevention
Two-pin UART
– Implemented features are 100% compatible with the standard Atmel USART
– Independent receiver and transmitter with a common programmable Baud Rate
Generator
– Even, Odd, Mark or Space Parity Generation
– Parity, Framing and Overrun Error Detection
– Automatic Echo, Local Loopback and Remote Loopback Channel Modes
– Support for two PDC channels with connection to receiver and transmitter
Debug Communication Channel Support
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