参数资料
型号: AT91SAM9261-CJ
厂商: Atmel
文件页数: 17/44页
文件大小: 0K
描述: IC ARM9 MPU 217BGA
标准包装: 126
系列: AT91SAM
核心处理器: ARM9
芯体尺寸: 16/32-位
速度: 190MHz
连通性: EBI/EMI,I²C,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: 192K 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
配用: AT91SAM9261-EK-ND - KIT EVAL FOR AT91SAM926EJ-S
AT91SAM-ICE-ND - EMULATOR FOR AT91 ARM7/ARM9
其它名称: AT91SAM9261B-CJ
AT91SAM9261B-CJ-ND
24
6062LS–ATARM–23-Mar-09
AT91SAM9261
9.2
Reset Controller
Based on two Power-on-Reset cells
Status of the last reset
– Either cold reset, first reset, soft reset, user reset, watchdog reset, wake-up reset
Controls the internal resets and the NRST pin output
9.3
Shutdown Controller
Shutdown and Wake-up logic:
– Software programmable assertion of the SHDN pin
– Deassertion Programmable on a WKUP pin level change or on alarm
9.4
General-purpose Backup Registers
Four 32-bit general-purpose backup registers
9.5
Clock Generator
Embeds the Low-power 32768 Hz Slow Clock Oscillator
– Provides the permanent Slow Clock to the system
Embeds the Main Oscillator
– Oscillator bypass feature
– Supports 3 to 20 MHz crystals
Embeds Two PLLs
– Outputs 80 to 240 MHz clocks
– Integrates an input divider to increase output accuracy
– 1 MHz minimum input frequency
Provides SLCK, MAINCK, PLLACK and PLLBCK.
Figure 9-2.
Clock Generator Block Diagram
Power
Management
Controller
XIN
XOUT
PLLRCA
Slow Clock
SLCK
Main Clock
MAINCK
PLLA Clock
PLLACK
Control
Status
PLL and
Divider B
PLLRCB
PLLB Clock
PLLBCK
XIN32
XOUT32
Slow Clock
Oscillator
Main
Oscillator
PLL and
Divider A
Clock Generator
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