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| 型号： | AT91SAM7X-EK |
| 厂商： | Atmel |
| 文件页数： | 11/44页 |
| 文件大小： | 0K |
| 描述： | KIT EVAL FOR AT91SAM7X256/128 |
| 产品培训模块： | AT91SAM7X and SAM7XC Flash-based Microcontrollers MCU Product Line Introduction |
| 标准包装： | 1 |
| 系列： | AT91SAM 智能 ARM |
| 类型： | MCU |
| 适用于相关产品： | AT91SAM7X256，AT91SAM7X128 |
| 所含物品： | 板，线缆，DVD，电源 |
| 相关产品： | AT91SAM7X256-CU-999-ND - IC MCU ARM7 256KB FLASH 100TFBGA AT91SAM7X128-CU-999-ND - IC MCU ARM7 128KB FLASH 100TFBGA AT91SAM7X128-AU-999-ND - IC MCU ARM7 128KB FLASH 100LQFP AT91SAM7X512-CU-ND - MCU ARM 512K HS FLASH 100-TFBGA AT91SAM7X512-AU-ND - MCU ARM 512K HS FLASH 100-LQFP AT91SAM7X256-CU-ND - MCU ARM 256K HS FLASH 100-TFBGA AT91SAM7X128-CU-ND - MCU ARM 128K HS FLASH 100-TFBGA AT91SAM7X256-AU-999TR-ND - IC ARM7 MCU 256K FLASH 100-LQFP AT91SAM7X256-AU-ND - IC ARM7 MCU FLASH 256K 100LQFP AT91SAM7X128-AU-ND - IC ARM7 MCU FLASH 128K 100LQFP |
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6120GS–ATARM–07-Apr-11
SAM7X512/256/128 Summary
8.4
Memory Mapping
8.4.1
Internal SRAM
The SAM7X512 embeds a high-speed 128 Kbyte SRAM bank.
The SAM7X256 embeds a high-speed 64 Kbyte SRAM bank.
The SAM7X128 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.
8.4.2
Internal ROM
The SAM7X512/256/128 embeds an Internal ROM. At any time, the ROM is mapped at address
0x30 0000. The ROM contains the FFPI and the SAM-BA program.
8.4.3
Internal Flash
The SAM7X512 features two banks (dual plane) of 256 Kbytes of Flash.
The SAM7X256 features one bank (single plane) of 256 Kbytes of Flash.
The SAM7X128 features one bank (single plane) of 128 Kbytes of Flash.
At any time, the Flash is mapped to address 0x0010 0000. It is also accessible at address 0x0
after the reset, if GPNVM bit 2 is set and before the Remap Command.
A general purpose NVM (GPNVM) bit is used to boot either on the ROM (default) or from the
Flash.
This GPNVM bit can be cleared or set respectively through the commands “Clear General-pur-
pose NVM Bit” and “Set General-purpose NVM Bit” of the EFC User Interface.
Setting the GPNVM Bit 2 selects the boot from the Flash. Asserting ERASE clears the GPNVM
Bit 2 and thus selects the boot from the ROM by default.
Figure 8-2.
Internal Memory Mapping with GPNVM Bit 2 = 0 (default)
256M Bytes
ROM Before Remap
SRAM After Remap
Undefined Areas
(Abort)
0x000F FFFF
0x001F FFFF
0x002F FFFF
0x0FFF FFFF
1 M Bytes
252 M Bytes
Internal FLASH
Internal SRAM
0x0000 0000
0x0010 0000
0x0020 0000
0x0030 0000
Internal ROM
0x003F FFFF
0x0040 0000
1 M Bytes
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AT91SAM9260 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:AT91 ARM Thumb Microcontrollers |
| AT91SAM9260_06 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Thumb Microcontrollers |
| AT91SAM9260_08 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:AT91 ARM Thumb Microcontrollers |
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| AT91SAM9260B-CFU | 功能描述:ARM微控制器 - MCU 32-bit 0.5mm pitch RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 处理器系列:STM32F373xx 数据总线宽度:32 bit 最大时钟频率:72 MHz 程序存储器大小:256 KB 数据 RAM 大小:32 KB 片上 ADC:Yes 工作电源电压:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:LQFP-48 安装风格:SMD/SMT |
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