参数资料
| 型号： | AT91SAM9G20B-CU |
| 厂商： | Atmel |
| 文件页数： | 14/42页 |
| 文件大小： | 0K |
| 描述： | IC ARM9 MPU 217-LFBGA |
| 产品培训模块： | SAM9 MPU Boot Solutions & Application Deployment MCU Product Line Introduction |
| 标准包装： | 126 |
| 系列： | SAM9G |
| 核心处理器： | ARM9 |
| 芯体尺寸： | 16/32-位 |
| 速度： | 400MHz |
| 连通性： | EBI/EMI，以太网，I²C，IrDA，ISI，MMC，SPI，SSC，UART/USART，USB |
| 外围设备： | DMA，POR，PWM，WDT |
| 输入/输出数： | 96 |
| 程序存储器容量： | 64KB（64K x 8） |
| 程序存储器类型： | ROM |
| RAM 容量： | 96K x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 0.9 V ~ 1.1 V |
| 数据转换器： | A/D 4x10b |
| 振荡器型： | 内部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 217-LFBGA |
| 包装： | 托盘 |
| 配用： | AT91SAM9G20-EK-ND - KIT EVAL FOR AT91SAM9G20 MCU AT91SAM-ICE-ND - EMULATOR FOR AT91 ARM7/ARM9 |
| 其它名称： | AT91SAM9G20-CU AT91SAM9G20-CU-ND |
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21
6384DS–ATARM–13-Jan-10
AT91SAM9G20 Summary
When REMAP = 0, BMS allows the user to lay out to 0x0, at his convenience, the ROM or an
external memory. This is done via hardware at reset.
Note:
Memory blocks not affected by these parameters can always be seen at their specified base
addresses. See the complete memory map presented in Figure 8-1 on page 19.
The AT91SAM9G20 matrix manages a boot memory that depends on the level on the BMS pin
at reset. The internal memory area mapped between address 0x0 and 0x000F FFFF is reserved
for this purpose.
If BMS is detected at 1, the boot memory is the embedded ROM.
If BMS is detected at 0, the boot memory is the memory connected on the Chip Select 0 of the
External Bus Interface.
8.1.1.1
BMS = 1, Boot on Embedded ROM
The system boots using the Boot Program.
Boot on slow clock (On-chip RC or 32,768 Hz)
Auto baudrate detection
Downloads and runs an application from external storage media into internal SRAM
Downloaded code size depends on embedded SRAM size
Automatic detection of valid application
Bootloader on a non-volatile memory
– SDCard (boot ROM does not support high capacity SDCards.)
–NAND Flash
– SPI DataFlash and Serial Flash connected on NPCS0 and NPCS1 of the SPI0
– EEPROM on TWI
SAM-BA
Boot in case no valid program is detected in external NVM, supporting
– Serial communication on a DBGU
– USB Device HS Port
8.1.1.2
BMS = 0, Boot on External Memory
Boot on slow clock (On-chip RC or 32,768 Hz)
Boot with the default configuration for the Static Memory Controller, byte select mode, 16-bit
data bus, Read/Write controlled by Chip Select, allows boot on 16-bit non-volatile memory.
The customer-programmed software must perform a complete configuration.
To speed up the boot sequence when booting at 32 kHz EBI CS0 (BMS=0), the user must take
the following steps:
1.
Program the PMC (main oscillator enable or bypass mode).
2.
Program and start the PLL.
3.
Reprogram the SMC setup, cycle, hold, mode timings registers for CS0 to adapt them
to the new clock.
4.
Switch the main clock to the new value.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AT91SAM9G20B-CU-999 | 功能描述:ARM微控制器 - MCU 2x16K SRAM Ethernet USB Host Bus Intrfc 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 |
| AT91SAM9G20-CU | 功能描述:ARM微控制器 - MCU 32-bit 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 |
| AT91SAM9G20-EK | 功能描述:开发板和工具包 - ARM 32-bit MCU Eval Kit RoHS:否 制造商:Arduino 产品:Development Boards 工具用于评估:ATSAM3X8EA-AU 核心:ARM Cortex M3 接口类型:DAC, ICSP, JTAG, UART, USB 工作电源电压:3.3 V |
| AT91SAM9G25-BFU | 制造商:Atmel Corporation 功能描述:VFBGA, GREEN, IND TEMP, MRLA - Trays 制造商:Atmel Corporation 功能描述:IC MCU ARM9 64KB ROM 247VFBGA |
| AT91SAM9G25-BFU-999 | 制造商:Atmel Corporation 功能描述:VFBGA,GREEN,IND TEMP,MRLA,T&R - Tape and Reel 制造商:Atmel Corporation 功能描述:IC MCU ARM9 64KB ROM 247VFBGA |
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