參數(shù)資料
型號： AT91SAM7A3-AU
廠商： Atmel
文件頁數(shù)： 9/39頁
文件大?。?/td> 0K
描述： IC ARM7 MCU FLASH 256K 100LQFP
產(chǎn)品培訓(xùn)模塊： SAM9 MPU Boot Solutions & Application Deployment
MCU Product Line Introduction
標準包裝： 90
系列： AT91SAM
核心處理器： ARM7
芯體尺寸： 16/32-位
速度： 60MHz
連通性： CAN，I²C，MMC，SPI，SSC，UART/USART
外圍設(shè)備： POR，PWM，WDT
輸入/輸出數(shù)： 62
程序存儲器容量： 256KB（256K x 8）
程序存儲器類型： 閃存
RAM 容量： 32K x 8
電壓 - 電源 (Vcc/Vdd)： 1.65 V ~ 1.95 V
數(shù)據(jù)轉(zhuǎn)換器： A/D 8x10b
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： AT91SAM-ICE-ND - EMULATOR FOR AT91 ARM7/ARM9
AT91SAM7A3-EK-ND - KIT EVAL FOR AT91SAM7A3
17
6042DS–ATARM–14-Dec-06
AT91SAM7A3
8.2
Memory Mapping
8.2.1
Internal SRAM
The AT91SAM7A3 embeds a high-speed 32-Kbyte SRAM bank. After reset and until the Remap
Command is performed, the SRAM is only accessible at address 0x0020 0000. After Remap,
the SRAM also becomes available at address 0x0.
8.2.2
Internal Flash
The AT91SAM7A3 features one bank of 256 Kbytes of Flash. The Flash is mapped to address
0x0010 0000. It is also accessible at address 0x0 after the reset and before the Remap
Command.
Figure 8-2.
Internal Memory Mapping
8.3
Embedded Flash
8.3.1
Flash Overview
The Flash block of the AT91SAM7A3 is organized in 1024 pages of 256 bytes. It reads as
65,536 32-bit words.
The Flash block contains a 256-byte write buffer, accessible through a 32-bit interface.
When Flash is not used (read or write access), it is automatically put into standby mode.
8.3.2
Embedded Flash Controller
The Embedded Flash Controller (EFC) manages accesses performed by the masters of the sys-
tem. It enables reading the Flash and writing the write buffer. It also contains a User Interface
mapped within the Memory Controller on the APB. The User Interface allows:
programming of the access parameters of the Flash (number of wait states, timings, etc.)
starting commands such as full erase, page erase, page program, NVM bit set, NVM bit
clear, etc.
getting the end status of the last command
getting error status
programming interrupts on the end of the last commands or on errors
256M Bytes
Flash Before Remap
SRAM After Remap
Undefined Areas
(Abort)
0x000F FFFF
0x001F FFFF
0x002F FFFF
0x0FFF FFFF
1M Bytes
253M Bytes
Internal Flash
Internal SRAM
0x0000 0000
0x0010 0000
0x0020 0000
0x0030 0000
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AT91SAM7A3-EK 功能描述:開發(fā)板和工具包 - ARM Eval Kit for AT91SAM7A3 apps RoHS:否 制造商:Arduino 產(chǎn)品:Development Boards 工具用于評估:ATSAM3X8EA-AU 核心:ARM Cortex M3 接口類型:DAC, ICSP, JTAG, UART, USB 工作電源電壓:3.3 V
AT91SAM7L128 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:AT91 ARM Thumb-based Microcontroller
AT91SAM7L128-AU 功能描述:ARM微控制器 - MCU 128KB Flash RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 處理器系列:STM32F373xx 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:72 MHz 程序存儲器大小:256 KB 數(shù)據(jù) RAM 大小:32 KB 片上 ADC:Yes 工作電源電壓:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:LQFP-48 安裝風(fēng)格:SMD/SMT
AT91SAM7L128-CU 功能描述:ARM微控制器 - MCU 128KB Flash RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 處理器系列:STM32F373xx 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:72 MHz 程序存儲器大小:256 KB 數(shù)據(jù) RAM 大小:32 KB 片上 ADC:Yes 工作電源電壓:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:LQFP-48 安裝風(fēng)格:SMD/SMT
AT91SAM7L128PRE 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:numberHigh-performance 32-bit RISC Architecture
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