参数资料
型号: AT90USB82-16MUR
厂商: Atmel
文件页数: 31/38页
文件大小: 0K
描述: MCU AVR USB 8K FLASH 32-QFN
产品培训模块: MCU Product Line Introduction
megaAVR Introduction
标准包装: 5,000
系列: AVR® 90USB
核心处理器: AVR
芯体尺寸: 8-位
速度: 16MHz
连通性: EBI/EMI,PS/2,SPI,UART/USART,USB
外围设备: 欠压检测/复位,POR,PWM,WDT
输入/输出数: 22
程序存储器容量: 8KB(8K x 8)
程序存储器类型: 闪存
EEPROM 大小: 512 x 8
RAM 容量: 512 x 8
电压 - 电源 (Vcc/Vdd): 2.7 V ~ 5.5 V
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 32-VFQFN 裸露焊盘
包装: 带卷 (TR)
配用: ATSTK600-ND - DEV KIT FOR AVR/AVR32
ATSTK526-ND - KIT STARTER FOR AT90USB82/162
ATAVRDRAGON-ND - KIT DRAGON FLASH MEM AVR
ATSTK525-ND - KIT STARTER FOR AT90USB
AT90USBKEY2-ND - KIT DEMO FOR AT90USB
37
7707F–AVR–11/10
AT90USB82/162
Figure 6-6.
PLL Clocking System
6.9.2
PLL Control and Status Register – PLLCSR
Bit 7..5 – Res: Reserved Bits
These bits are reserved bits in the AT90USB82/162 and always read as zero.
Bit 4..2 – PLLP2:0 PLL prescaler
These bits allow to configure the PLL input prescaler to generate the 8MHz input clock for the
PLL.
Bit 1 – PLLE: PLL Enable
When the PLLE is set, the PLL is started and if needed internal RC Oscillator is started as a PLL
reference clock. If PLL is selected as a system clock source the value for this bit is always 1.
XTAL2
XTAL1
XTAL
PLL
6x
PLLE
Lock
Detector
PLOCK
clkUSB (48MHz)
PLL clock
Prescaler
System Clock
clk
8MHz
Ext.
Int RC
8MHz.
Clock Switch
Clock Mux (fuse)
Bit
7
65
43
21
0
$29 ($29)
PLLP2
PLLP1
PLLP0
PLLE
PLOCK
PLLCSR
Read/Write
R
R/W
R
Initial Value
0
0/1
0
Table 6-10.
PLL input prescaler configurations
PLLP2
PLLP1
PLLP0
Clock Division Factor
00
0
1
00
1
2
0
1
0
Reserved
0
1
Reserved
1
0
Reserved
1
0
1
Reserved
1
0
Reserved
1
Reserved
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