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参数资料
| 型号： | AT91SAM7S321-MU |
| 厂商： | Atmel |
| 文件页数： | 15/50页 |
| 文件大小： | 0K |
| 描述： | MCU ARM 32K HI SPD FLASH 64-QFN |
| 产品培训模块： | SAM9 MPU Boot Solutions & Application Deployment MCU Product Line Introduction |
| 标准包装： | 260 |
| 系列： | SAM7S |
| 核心处理器： | ARM7 |
| 芯体尺寸： | 16/32-位 |
| 速度： | 55MHz |
| 连通性： | 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： | 32 |
| 程序存储器容量： | 32KB（32K x 8） |
| 程序存储器类型： | 闪存 |
| RAM 容量： | 8K 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： | 64-VFQFN 裸露焊盘 |
| 包装： | 托盘 |
| 配用： | AT91SAM-ICE-ND - EMULATOR FOR AT91 ARM7/ARM9 AT91SAM7S-EK-ND - KIT EVAL FOR ARM AT91SAM7S |
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22
SAM7S Series [DATASHEET]
6175KS–ATARM–25-Oct-12
8.8
Embedded Flash
8.8.1
Flash Overview
The Flash of the SAM7S512 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 SAM7S256 is organized in 1024 pages (single plane) of 256 bytes. The 262,144 bytes are
organized in 32-bit words.
The Flash of the SAM7S128 is organized in 512 pages (single plane) of 256 bytes. The 131,072 bytes are
organized in 32-bit words.
The Flash of the SAM7S64 is organized in 512 pages (single plane) of 128 bytes. The 65,536 bytes are organized
in 32-bit words.
The Flash of the SAM7S321/32 is organized in 256 pages (single plane) of 128 bytes. The 32,768 bytes are
organized in 32-bit words.
The Flash of the SAM7S161/16 is organized in 256 pages (single plane) of 64 bytes. The 16,384 bytes are
organized in 32-bit words.
The Flash of the SAM7S512/256/128 contains a 256-byte write buffer, accessible through a 32-bit interface.
The Flash of the SAM7S64/321/32/161/16 contains a 128-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.
8.8.2
Embedded Flash Controller
The Embedded Flash Controller (EFC) manages accesses performed by the masters of the system. 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 SAM7S512 to control each bank of 256 Kbytes. Dual plane organization allows
concurrent Read and Program. Read from one memory plane may be performed even while program or erase functions
are being executed in the other memory plane.
One EFC is embedded in the SAM7S256/128/64/32/321/161/16 to control the single plane 256/128/64/32/16 Kbytes.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AT91SAM7S321-MU-999 | 功能描述:ARM微控制器 - MCU Green, Ind Temp 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 |
| AT91SAM7S32-AI | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:AT91 ARM THUMB BASED MICROCONTROLLERS |
| AT91SAM7S32-AU-001 | 功能描述:ARM微控制器 - MCU LQFP IND TEMP 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 |
| AT91SAM7S32-AU-999 | 功能描述:ARM微控制器 - MCU Microcontroller 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 |
| AT91SAM7S32B-AU | 功能描述:ARM微控制器 - MCU LQFP IND TEMP MRL B 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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