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参数资料
| 型号： | AT90USB82-16MUR |
| 厂商： | Atmel |
| 文件页数： | 22/38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 |
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29
7707F–AVR–11/10
AT90USB82/162
6.2.5
Clock Status Register – CLKSTA
Bit 7-2 - Reserved bits
These bits are reserved and will always read as zero.
Bit 1 – RCON: RC Oscillator On
This bit is set by hardware to one if the RC Oscillator is running.
This bit is set by hardware to zero if the RC Oscillator is stoped.
Bit 0 – EXTON: External Oscillator / Low Power Oscillator On
This bit is set by hardware to one if the External Oscillator / Low Power Oscillator is running.
This bit is set by hardware to zero if the External Oscillator / Low Power Oscillator is stoped.
6.3
Clock Sources
The device has the following clock source options, selectable by Flash Fuse bits as shown
below. The clock from the selected source is input to the AVR clock generator, and routed to the
appropriate modules.
Note:
1. For all fuses “1” means unprogrammed while “0” means programmed.
6.3.1
Default Clock Source
The device is shipped with low power crystal oscillator and with the fuse CKDIV8 programmed.
The startup time is set to maximum and time-out period enabled. (CKSEL = "1110", SUT = "01",
CKDIV8 = "0").
6.3.2
Clock Startup Sequence
Any clock source needs a sufficient V
CC to start oscillating and a minimum number of oscillating
cycles before it can be considered stable.
To ensure sufficient V
CC, the device issues an internal reset with a time-out delay (tTOUT) after
the device reset is released by all other reset sources. “On-chip Debug System” on page 45
describes the start conditions for the internal reset. The delay (t
TOUT) is timed from the Watchdog
Oscillator and the number of cycles in the delay is set by the SUTx and CKSELx fuse bits. The
selectable delays are shown in Table 6-2. The frequency of the Watchdog Oscillator is voltage
Bit
7
6
543
2
1
0
-
RCON
EXTON
CLKSTA
Read/Write
R
Initial Value
0
See Bit Description
Table 6-1.
Device Clocking Options Select
Device Clocking Option
CKSEL3..0
Low Power Crystal Oscillator
1111 - 1000
Reserved
0111 - 0110
Reserved
0101 - 0100
Reserved
0011
Calibrated Internal RC Oscillator
0010
External Clock
0000
Reserved
0001
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相关代理商/技术参数 |
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| AT90USBKEY | 功能描述:开发板和工具包 - AVR Demo board f/AVR MCU & AT90USB RoHS:否 制造商:Arduino 产品:Evaluation Boards 工具用于评估:ATMega32U4 核心:AVR 接口类型:I2C, UART, USB 工作电源电压:6 V to 20 V |
| AT90USBKEY2 | 功能描述:开发板和工具包 - AVR AVR USB Eval Kit RoHS:否 制造商:Arduino 产品:Evaluation Boards 工具用于评估:ATMega32U4 核心:AVR 接口类型:I2C, UART, USB 工作电源电压:6 V to 20 V |
| AT-910 | 制造商:HRS 制造商全称:HRS 功能描述:Stripline Mounting Fixed Attenuators (DC to 8 GHz) |
| AT-910(40) | 功能描述:衰减器 -IC RoHS:否 制造商:Skyworks Solutions, Inc. 最大衰减:18 dB 容差: 阻抗: 功率额定值:30 dBm 安装风格:SMD/SMT 工作温度范围:- 40 C to + 85 C |
| AT-913(40) | 功能描述:衰减器 -IC RoHS:否 制造商:Skyworks Solutions, Inc. 最大衰减:18 dB 容差: 阻抗: 功率额定值:30 dBm 安装风格:SMD/SMT 工作温度范围:- 40 C to + 85 C |
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