參數(shù)資料
型號: ATSAM3U2CA-AU
廠商: Atmel
文件頁數(shù): 25/60頁
文件大?。?/td> 0K
描述: IC MCU 32BIT 128KB FLASH 100LQFP
產(chǎn)品培訓模塊: MCU Product Line Introduction
Cortex®-M3 Introduction and Specific SAM3U Implementation
SAM3U Cortex-M3 Based MCU Introduction
Touch Solutions on the Atmel ARM? Cortex?-M3 Based Flash Microcontrollers
標準包裝: 90
系列: SAM3U
核心處理器: ARM? Cortex?-M3
芯體尺寸: 32-位
速度: 96MHz
連通性: EBI/EMI,I²C,MMC,SPI,SSC,UART/USART,USB
外圍設備: 欠壓檢測/復位,DMA,I²S,POR,PWM,WDT
輸入/輸出數(shù): 57
程序存儲器容量: 128KB(128K x 8)
程序存儲器類型: 閃存
RAM 容量: 36K x 8
電壓 - 電源 (Vcc/Vdd): 1.62 V ~ 1.95 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 4x10b,4x12b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 100-LQFP
包裝: 托盤
配用: ATSAM3U-EK-ND - KIT EVAL FOR AT91SAM3U CORTEX
31
6430FS–ATARM–10-Feb-12
SAM3U Series
9.
Memories
The embedded and external memories are described below.
9.1
Embedded Memories
9.1.1
Internal SRAM
The SAM3U4 (256 KBytes internal Flash version) embeds a total of 48 Kbytes high-speed
SRAM (32 Kbytes SRAM0 and 16 Kbytes SRAM1).
The SAM3U2 (128 KBytes internal Flash version) embeds a total of 32 Kbytes high-speed
SRAM (16 Kbytes SRAM0 and 16 Kbytes SRAM1).
The SAM3U1 (64 KBytes internal Flash version) embeds a total of 16 Kbytes high-speed SRAM
(8 Kbytes SRAM0 and 8 Kbytes SRAM1).
The SRAM0 is accessible over System Cortex-M3 bus at address 0x2000 0000 and SRAM1 at
address 0x2008 0000. The user can see the SRAM as contiguous at 0x20078000-0x20083FFF
(SAM3U4), 0x2007C000-0x20083FFFF (SAM3U2) or 0x2007E000-0x20081FFFF (SAM3U1).
The SRAM0 and SRAM1 are in the bit band region. The bit band alias region is from 0x2200
0000 and 0x23FF FFFF.
The NAND Flash Controller embeds 4224 bytes of internal SRAM. If the NAND Flash controller
is not used, these 4224 bytes of SRAM can be used as general purpose. It can be seen at
address 0x2010 0000.
9.1.2
Internal ROM
The SAM3U product embeds an Internal ROM, which contains the SAM-BA Boot and FFPI
program.
At any time, the ROM is mapped at address 0x0018 0000.
9.1.3
Embedded Flash
9.1.3.1
Flash Overview
The Flash of the SAM3U4 (256 KBytes internal Flash version) is organized in two banks of 512
pages (dual plane) of 256 bytes.
The Flash of the SAM3U2 (128 KBytes internal Flash version) is organized in one bank of 512
pages (single plane) of 256 bytes.
The Flash of the is SAM3U1 (64KBytes internal Flash version) organized in one bank of 256
pages (single plane) of 256 bytes.
The Flash contains a 128-byte write buffer, accessible through a 32-bit interface.
9.1.3.2
Flash Power Supply
The Flash is supplied by VDDCORE.
9.1.3.3
Enhanced Embedded Flash Controller
The Enhanced Embedded Flash Controller (EEFC) manages accesses performed by the mas-
ters of the system. It enables reading the Flash and writing the write buffer. It also contains a
User Interface, mapped within the Memory Controller on the APB.
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