參數(shù)資料
型號: AT91SAM9N12-CU
廠商: Atmel
文件頁數(shù): 14/27頁
文件大?。?/td> 0K
描述: IC MCU ARM9 217-LFBGA
標(biāo)準(zhǔn)包裝: 126
系列: SAM9N
核心處理器: ARM9
芯體尺寸: 16/32-位
速度: 400MHz
連通性: EBI/EMI,I²C,MMC,SPI,SSC,UART/USART,USB
外圍設(shè)備: DMA,LCD,POR,PWM,WDT
輸入/輸出數(shù): 105
程序存儲器容量: 128KB(128K x 8)
程序存儲器類型: ROM
RAM 容量: 32K x 8
電壓 - 電源 (Vcc/Vdd): 0.9 V ~ 1.1 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 12x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: *
包裝: *
21
11096AS–ATARM–4-Oct-11
SAM9N12
7.
System Controller
The System Controller is a set of peripherals that allows handling of key elements of the system,
such as power, resets, clocks, time, interrupts, watchdog, etc.
The System Controller User Interface also embeds the registers that configure the Matrix and a
set of registers for the chip configuration. The chip configuration registers configure the EBI chip
select assignment and voltage range for external memories.
7.1
System Controller Mapping
The System Controller’s peripherals are all mapped within the highest 16 Kbytes of address
space, between addresses 0xFFFF E400 and 0xFFFF FFFF.
However, all the registers of the System Controller are mapped on the top of the address space.
All the registers of the System Controller can be addressed from a single pointer by using the
standard ARM instruction set, as the Load/Store instruction have an indexing mode of ±4
Kbytes.
Figure 7-1 shows the System Controller block diagram.
Figure 6-1 shows the mapping of the User Interfaces of the System Controller peripherals.
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