參數(shù)資料
型號(hào): AT91SAM9G20B-CFU
廠商: Atmel
文件頁(yè)數(shù): 8/42頁(yè)
文件大?。?/td> 0K
描述: IC MCU ARM9 247-LFBGA
產(chǎn)品培訓(xùn)模塊: MCU Product Line Introduction
標(biāo)準(zhǔn)包裝: 240
系列: SAM9G
核心處理器: ARM9
芯體尺寸: 16/32-位
速度: 400MHz
連通性: EBI/EMI,以太網(wǎng),I²C,IrDA,ISI,MMC,SPI,SSC,UART/USART,USB
外圍設(shè)備: DMA,POR,PWM,WDT
輸入/輸出數(shù): 96
程序存儲(chǔ)器容量: 64KB(64K x 8)
程序存儲(chǔ)器類型: ROM
RAM 容量: 96K x 8
電壓 - 電源 (Vcc/Vdd): 0.9 V ~ 1.1 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 4x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 247-TFBGA
包裝: 托盤(pán)
16
6384DS–ATARM–13-Jan-10
AT91SAM9G20 Summary
– Round-Robin Arbitration, either with no default master, last accessed default master
or fixed default master
Burst Management
– Breaking with Slot Cycle Limit Support
– Undefined Burst Length Support
One Address Decoder provided per Master
– Three different slaves may be assigned to each decoded memory area: one for
internal boot, one for external boot, one after remap
Boot Mode Select
– Non-volatile Boot Memory can be internal or external
– Selection is made by BMS pin sampled at reset
Remap Command
– Allows Remapping of an Internal SRAM in Place of the Boot Non-Volatile Memory
Allows Handling of Dynamic Exception Vectors
7.2.1
Matrix Masters
The Bus Matrix of the AT91SAM9G20 manages six Masters, which means that each master can
perform an access concurrently with others, according the slave it accesses is available.
Each Master has its own decoder that can be defined specifically for each master. In order to
simplify the addressing, all the masters have the same decodings.
7.2.2
Matrix Slaves
Each Slave has its own arbiter, thus allowing to program a different arbitration per Slave.
Table 7-1.
List of Bus Matrix Masters
Master 0
ARM926 Instruction
Master 1
ARM926 Data
Master 2
PDC
Master 3
ISI Controller
Master 4
Ethernet MAC
Master 5
USB Host DMA
Table 7-2.
List of Bus Matrix Slaves
Slave 0
Internal SRAM0 16 KBytes
Slave 1
Internal SRAM1 16 KBytes
Slave 2
Internal ROM
USB Host User Interface
Slave 3
External Bus Interface
Slave 4
Internal Peripherals
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