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參數(shù)資料
| 型號(hào)： | AT91SAM7XC256-CU |
| 廠商： | Atmel |
| 文件頁數(shù)： | 13/47頁 |
| 文件大?。?/td> | 0K |
| 描述： | MCU ARM 256K HS FLASH 100-TFBGA |
| 產(chǎn)品培訓(xùn)模塊： | SAM9 MPU Boot Solutions & Application Deployment AT91SAM7X and SAM7XC Flash-based Microcontrollers MCU Product Line Introduction |
| 標(biāo)準(zhǔn)包裝： | 260 |
| 系列： | SAM7XC |
| 核心處理器： | ARM7 |
| 芯體尺寸： | 16/32-位 |
| 速度： | 55MHz |
| 連通性： | CAN，以太網(wǎng)，I²C，SPI，SSC，UART/USART，USB |
| 外圍設(shè)備： | 欠壓檢測/復(fù)位，DMA，POR，PWM，WDT |
| 輸入/輸出數(shù)： | 62 |
| 程序存儲(chǔ)器容量： | 256KB（256K x 8） |
| 程序存儲(chǔ)器類型： | 閃存 |
| RAM 容量： | 64K 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-TFBGA |
| 包裝： | 托盤 |
| 配用： | AT91SAM-ICE-ND - EMULATOR FOR AT91 ARM7/ARM9 AT91SAM7XC-EK-ND - KIT EVAL FOR AT91SAM7XC256/128 |
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20
6209DS–ATARM–17-Feb-09
AT91SAM7XC512/256/128
8.4
Memory Mapping
8.4.1
Internal RAM
The AT91SAM7XC512 embeds a high-speed 128-Kbyte SRAM bank.
The AT91SAM7XC256 embeds a high-speed 64-Kbyte SRAM bank.
The AT91SAM7XC128 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 AT91SAM7XC512/256/128 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 AT91SAM7XC512 features two banks (dual plane) of 256 Kbytes of Flash.
The AT91SAM7XC256 features one bank (single plane) of 256 Kbytes of Flash.
The AT91SAM7XC128 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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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)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 處理器系列:STM32F373xx 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:72 MHz 程序存儲(chǔ)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 |
| AT91SAM7XC258 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:ARM Thumb-based Microcontrollers |
| AT91SAM7XC512 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Incorporates the ARM7TDMI ARM Thumb? Processor |
| AT91SAM7XC512_08 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Incorporates the ARM7TDMI ARM Thumb? Processor |
| AT91SAM7XC512_09 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:ARM Thumb-based Microcontrollers |
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