参数资料
| 型号： | AT91SAM7XC256-CU |
| 厂商： | Atmel |
| 文件页数： | 14/47页 |
| 文件大小： | 0K |
| 描述： | MCU ARM 256K HS FLASH 100-TFBGA |
| 产品培训模块： | SAM9 MPU Boot Solutions & Application Deployment AT91SAM7X and SAM7XC Flash-based Microcontrollers MCU Product Line Introduction |
| 标准包装： | 260 |
| 系列： | SAM7XC |
| 核心处理器： | ARM7 |
| 芯体尺寸： | 16/32-位 |
| 速度： | 55MHz |
| 连通性： | CAN，以太网，I²C，SPI，SSC，UART/USART，USB |
| 外围设备： | 欠压检测/复位，DMA，POR，PWM，WDT |
| 输入/输出数： | 62 |
| 程序存储器容量： | 256KB（256K x 8） |
| 程序存储器类型： | 闪存 |
| RAM 容量： | 64K x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 1.65 V ~ 1.95 V |
| 数据转换器： | A/D 8x10b |
| 振荡器型： | 内部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 100-TFBGA |
| 包装： | 托盘 |
| 配用： | AT91SAM-ICE-ND - EMULATOR FOR AT91 ARM7/ARM9 AT91SAM7XC-EK-ND - KIT EVAL FOR AT91SAM7XC256/128 |
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21
6209DS–ATARM–17-Feb-09
AT91SAM7XC512/256/128
Figure 8-3.
Internal Memory Mapping with GPNVM Bit 2 = 1
8.5
Embedded Flash
8.5.1
Flash Overview
The Flash of the AT91SAM7XC512 is organized in two banks (dual plane) 0f 1254 pages of
256 bytes. The 524, 288 bytes are organized in 32-bit words.
The Flash of the AT91SAM7XC256 is organized in 1024 pages of 256 bytes (single plane). It
reads as 65,536 32-bit words.
The Flash of the AT91SAM7XC128 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 AT91SAM7XC512 to control each bank of 256 KBytes. Dual-
plane organization allows concurrent read and program functionality. Read from one memory
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
相关PDF资料 |
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| PIC16LF874A-I/P | IC MCU FLASH 4KX14 EE A/D 40DIP |
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| AT91SAM7XC128-CU | MCU ARM 128K HS FLASH 100-TFBGA |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AT91SAM7XC256-CU-999 | 功能描述:ARM微控制器 - MCU BGA Ind. Temp Green 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 |
| AT91SAM7XC258 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:ARM Thumb-based Microcontrollers |
| AT91SAM7XC512 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Incorporates the ARM7TDMI ARM Thumb? Processor |
| AT91SAM7XC512_08 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Incorporates the ARM7TDMI ARM Thumb? Processor |
| AT91SAM7XC512_09 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:ARM Thumb-based Microcontrollers |
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