參數(shù)資料
型號(hào): ATSAM3A8CA-CU
廠商: Atmel
文件頁(yè)數(shù): 40/71頁(yè)
文件大?。?/td> 0K
描述: IC MCU 2X256KB CORTEX-M3 100-BGA
標(biāo)準(zhǔn)包裝: 260
系列: SAM3A
核心處理器: ARM? Cortex?-M3
芯體尺寸: 32-位
速度: 84MHz
連通性: CAN,I²C,IrDA,LIN,MMC,SPI,SSC,UART/USART,USB
外圍設(shè)備: 欠壓檢測(cè)/復(fù)位,DMA,I²S,POR,PWM,WDT
輸入/輸出數(shù): 63
程序存儲(chǔ)器容量: 512KB(512K x 8)
程序存儲(chǔ)器類(lèi)型: 閃存
RAM 容量: 96K x 8
電壓 - 電源 (Vcc/Vdd): 1.62 V ~ 1.95 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 16x12b,D/A 2x12b
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(pán)
47
11057BS–ATARM–13-Jul-12
SAM3X/A
47
11057BS–ATARM–13-Jul-12
SAM3X/A
Figure 10-2. Clock Generator Block Diagram
10.6
Power Management Controller
The Power Management Controller provides all the clock signals to the system. It provides:
the Processor Clock HCLK
the Free running processor clock FCLK
the Cortex SysTick external clock
the Master Clock MCK, in particular to the Matrix and the memory interfaces
the USB OTG HS Clock UOTGCK
independent peripheral clocks, typically at the frequency of MCK
three programmable clock outputs: PCK0, PCK1 and PCK2
The Supply Controller selects between the 32 kHz RC oscillator or the crystal oscillator. The
unused oscillator is disabled automatically so that power consumption is optimized.
By default, at startup the chip runs out of the Master Clock using the Fast RC Oscillator running
at 4 MHz.
Power
Management
Controller
XIN
XOUT
Main Clock
MAINCK
UPLL Clock
UPLLCK
Control
Status
PLL and
Divider A
PLLA Clock
PLLACK
3-20 MHz
Main
Oscillator
UPLL
On Chip
32k RC OSC
Slow Clock
SLCK
XIN32
XOUT32
Slow Clock
Oscillator
Clock Generator
XTALSEL
HSCK
Divider
/6 /8
On Chip
12/8/4 MHz
RC OSC
MAINSEL
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