参数资料
型号: AT91SAM9G10-CU
厂商: Atmel
文件页数: 10/39页
文件大小: 0K
描述: IC MCU ARM9 SAMPLING 217CBGA
产品培训模块: 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: 266MHz
连通性: EBI/EMI,I²C,IrDA,ISI,MMC,SPI,SSC,UART/USART,USB
外围设备: DMA,LCD,POR,PWM,WDT
输入/输出数: 96
程序存储器容量: 32KB(32K x 8)
程序存储器类型: ROM
RAM 容量: 48K x 8
电压 - 电源 (Vcc/Vdd): 1.08 V ~ 1.32 V
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 217-LFBGA
包装: 托盘
18
6462AS–ATARM–03-Jun-09
AT91SAM9G10
8.1.2.1
BMS = 1, Boot on Embedded ROM
The system boots using the Boot Program.
Enable the 32,768 Hz oscillator
Auto baudrate detection
Downloads and runs an application from external storage media into internal SRAM
Automatic detection of valid application
Bootloader on a non-volatile memory
– SPI Serial Flash or DataFlash connected on NPCS0 of the SPI0
–NAND Flash
– SDCard (boot ROM does not support high-capacity SDCards)
SAM-BA Boot in case no valid program is detected in external NVM, supporting
– Serial communication on a DBGU
– USB Device HS Port
8.1.2.2
BMS = 0, Boot on External Memory
Boot on slow clock (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.
8.2
External Memories
The external memories are accessed through the External Bus Interface (Bus Matrix Slave 3).
Refer to the memory map in Figure 8-1 on page 15.
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