参数资料
型号: AT91SAM9G20B-CFU
厂商: Atmel
文件页数: 19/42页
文件大小: 0K
描述: IC MCU ARM9 247-LFBGA
产品培训模块: MCU Product Line Introduction
标准包装: 240
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: 247-TFBGA
包装: 托盘
26
6384DS–ATARM–13-Jan-10
AT91SAM9G20 Summary
Figure 9-2.
Clock Generator Block Diagram
9.5
Power Management Controller
Provides:
– the Processor Clock PCK
– the Master Clock MCK, in particular to the Matrix and the memory interfaces.The
MCK divider can be 1,2,4,6
– the USB Device Clock UDPCK
– independent peripheral clocks, typically at the frequency of MCK
– 2 programmable clock outputs: PCK0, PCK1
Five flexible operating modes:
– Normal Mode, processor and peripherals running at a programmable frequency
– Idle Mode, processor stopped waiting for an interrupt
– Slow Clock Mode, processor and peripherals running at low frequency
– Standby Mode, mix of Idle and Backup Mode, peripheral running at low frequency,
processor stopped waiting for an interrupt
– Backup Mode, Main Power Supplies off, VDDBU powered by a battery
On Chip
RC OSC
Power
Management
Controller
XIN
XOUT
Slow Clock
SLCK
Main Clock
MAINCK
PLLA Clock
PLLACK
Control
Status
PLL and
Divider B
PLLB Clock
PLLBCK
XIN32
XOUT32
Slow Clock
Oscillator
Main
Oscillator
PLL and
Divider A
Clock Generator
OSCSEL
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