參數(shù)資料
型號(hào): AT91SAM9G20B-CFU
廠商: Atmel
文件頁數(shù): 7/42頁
文件大小: 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
15
6384DS–ATARM–13-Jan-10
AT91SAM9G20 Summary
7.
Processor and Architecture
7.1
ARM926EJ-S Processor
RISC Processor Based on ARM v5TEJ Architecture with Jazelle technology for Java
acceleration
Two Instruction Sets
– ARM High-performance 32-bit Instruction Set
– Thumb High Code Density 16-bit Instruction Set
DSP Instruction Extensions
5-Stage Pipeline Architecture:
– Instruction Fetch (F)
– Instruction Decode (D)
– Execute (E)
– Data Memory (M)
– Register Write (W)
32-Kbyte Data Cache, 32-Kbyte Instruction Cache
– Virtually-addressed 4-way Associative Cache
– Eight words per line
– Write-through and Write-back Operation
– Pseudo-random or Round-robin Replacement
Write Buffer
– Main Write Buffer with 16-word Data Buffer and 4-address Buffer
– DCache Write-back Buffer with 8-word Entries and a Single Address Entry
– Software Control Drain
Standard ARM v4 and v5 Memory Management Unit (MMU)
– Access Permission for Sections
– Access Permission for large pages and small pages can be specified separately for
each quarter of the page
– 16 embedded domains
Bus Interface Unit (BIU)
– Arbitrates and Schedules AHB Requests
– Separate Masters for both instruction and data access providing complete Matrix
system flexibility
– Separate Address and Data Buses for both the 32-bit instruction interface and the
32-bit data interface
– On Address and Data Buses, data can be 8-bit (Bytes), 16-bit (Half-words) or 32-bit
(Words)
7.2
Bus Matrix
6-layer Matrix, handling requests from 6 masters
Programmable Arbitration strategy
– Fixed-priority Arbitration
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