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| 型号： | AT91SAM7X-EK |
| 厂商： | Atmel |
| 文件页数： | 13/44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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20
6120GS–ATARM–07-Apr-11
SAM7X512/256/128 Summary
Figure 8-3.
Internal Memory Mapping with GPNVM Bit 2 = 1
8.5
Embedded Flash
8.5.1
Flash Overview
The Flash of the SAM7X512 is organized in two banks (dual plane) of 1024 pages of 256
bytes. The 524,288 bytes are organized in 32-bit words.
The Flash of the SAM7X256 is organized in 1024 pages of 256 bytes (single plane). It reads
as 65,536 32-bit words.
The Flash of the SAM7X128 is organized in 512 pages of 256 bytes (single plane). It reads
as 32,768 32-bit words.
The Flash contains a 256-byte write buffer, accessible through a 32-bit interface.
The Flash benefits from the integration of a power reset cell and from the brownout detector.
This prevents code corruption during power supply changes, even in the worst conditions.
When Flash is not used (read or write access), it is automatically placed into standby mode.
8.5.2
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
The Embedded Flash Controller also provides a dual 32-bit Prefetch Buffer that optimizes 16-bit
access to the Flash. This is particularly efficient when the processor is running in Thumb mode.
Two EFCs are embedded in the SAM7X512 to control each bank of 256 KBytes. Dual-plane
organization allows concurrent read and program functionality. Read from one memory plane
256M Bytes
Flash 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 |
| AT91SAM9260_09 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:AT91 ARM Thumb Microcontrollers |
| 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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